Author: "Bohnet, I." / Topic: zeus - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Bohnet, I."' showing total 39 results

Start Over Author "Bohnet, I." Topic zeus

39 results on '"Bohnet, I."'

1. Measurement of exclusive omega electroproduction at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Irrgang, P, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, KC, Weber, A, Wieber, H, Bailey, DS, Barret, O, Brook, NH, Foster, B, Heath, GP, Heath, HF, McFall, JD, Rodrigues, E, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sampson, S, Schmidke, WB, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, MB, Stopa, P, Zawiejski, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, LAT, Behrens, U, Bienlein, JK, Borras, K, Dannheim, D, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Goers, S, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Mankel, R, Martinez, M, Milite, M, Moritz, M, Notz, D, Pelucchi, F, Petrucci, MC, Rohde, M, Savin, AA, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Viani, ALD, Meyer, A, Schlenstedt, S, Straub, PB, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Benen, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, PJ, Bell, M, Doyle, AT, Lee, SW, Lupi, A, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, KR, Miller, DB, Tapper, AD, Walker, R, Mallik, U, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, SH, Lee, SB, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, DS, Ochs, A, Padhi, S, Stairs, DG, Wing, M, Tsurugai, T, Antonov, A, Bashkirov, V, Danilov, M, Dolgoshein, BA, Gladkov, D, Sosnovtsev, V, Suchkov, S, Dementiev, RK, Ermolov, PF, Golubkov, YA, Katkov, II, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Vlasov, NN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tassi, E, Tiecke, H, Tuning, N, Velthuis, JJ, Vossebeld, J, Wiggers, L, de Wolf, E, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Boogert, S, Cooper-Sarkar, AM, Devenish, RCE, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, MR, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Turcato, M, Voci, C, Adamczyk, L, Iannotti, L, Oh, BY, Okrasinski, JR, Saull, PRB, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, West, BJ, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Catterall, C, Cole, JE, Frisken, WR, Hall-Wilton, R, Khakzad, M, Menary, S, Collaboration, ZEUS, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, DEEP, FOS: Physical sciences, 01 natural sciences, Zeus (malware), Omega, High Energy Physics - Experiment, Luminosity, Nuclear physics, High Energy Physics - Experiment (hep-ex), DESIGN, 0103 physical sciences, SCATTERING, 010306 general physics, Nuclear Experiment, QC, Quantum chromodynamics, Physics, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, VECTOR-MESONS, PHOTOPRODUCTION, QCD, CONSTRUCTION, RHO(0), ZEUS, Research Groups and Centres\Physics\Low Temperature Physics, 010308 nuclear & particles physics, Scattering, Faculty of Science\Physics, HERA, High Energy Physics::Experiment
Abstract: The exclusive electroproduction of omega mesons, ep -> e omega p, has been studied in the kinematic range 3 pi^+pi^-pi^0. The exclusive (ep -> e omega p) cross section in the above kinematic region is 0.108 +- 0.014(stat.) +- 0.026(syst.) nb. The reaction ep -> e phi p, phi -> pi^+pi^-pi^0, has also been measured. The cross sections, as well as the cross-section ratios omega/rho and omega/phi, are presented as a function of W and Q^2. Thus, for the first time, the properties of omega electroproduction can be compared to those of rho^0, phi and J/psi electroproduction at high W., Comment: 15 pages including 4 figures
Published: 2016
Full Text: View/download PDF

2. Measurement of azimuthal asymmetries in deep inelastic scattering

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Irrgang, P, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, K C, Weber, A, Wieber, H, Bailey, D S, Barret, O, Brook, N H, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Rodrigues, E, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sampson, S, Schmidke, W B, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, M B, Stopa, P, Zawiejski, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Dannheim, D, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, M C, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Viani, A L D, Meyer, A, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Benen, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, P J, Doyle, A T, Lee, S W, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, K R, Miller, D B, Tapper, A D, Walker, R, Mallik, U, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, S H, Lee, S B, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, D S, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Dementiev, R K, Ermolov, P F, Golubkov, Y A, Katkov, I I, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Vlasov, N N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Boogert, S, Cooper-Sarkar, A M, Devenish, R C E, Grobe-Knetter, J, Matsushita, T, Ruske, O, Sutton, M R, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, P, Stanco, L, Stroili, R, Voci, C, Adamczyk, L, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, West, B J, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Catterall, C, Cole, J E, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, and ZEUS Collaboration
Subjects: Nuclear and High Energy Physics, Particle physics, MONTE-CARLO GENERATOR, ENERGIES, HERA, Nuclear Theory, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, CROSS-SECTIONS, Nuclear physics, High Energy Physics - Experiment (hep-ex), LEPTOPRODUCTION, 0103 physical sciences, DISTRIBUTIONS, Nuclear Experiment, 010306 general physics, QC, Physics, Quantum chromodynamics, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), Neutral current, Faculty of Science\Physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Perturbative QCD, ZEUS, LEPTON-PROTON SCATTERING, Deep inelastic scattering, QCD, High Energy Physics::Experiment
Abstract: The distribution of the azimuthal angle for the charged hadrons has been studied in the hadronic centre-of-mass system for neutral current deep inelastic positron-proton scattering with the ZEUS detector at HERA. Measurements of the dependence of the moments of this distribution on the transverse momenta of the charged hadrons are presented. Asymmetries that can be unambiguously attributed to perturbative QCD processes have been observed for the first time., Comment: 19 pages - 4 figures. Included referee's comments
Published: 2000
Full Text: View/download PDF

3. Measurement of high-$Q^2$ charged-current $e^+p$ deep inelastic scattering cross sections at HERA

Author: Breitweg, J., Chekanov, S., Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Pellegrino, A., Repond, J., Stanek, R., Yoshida, R., Mattingly, M. C. K., Abbiendi, G., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Guido Castellini, Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Hartmann, H., Heinloth, K., Hilger, E., Jakob, H. -P, Kappes, A., Katz, U. F., Kerger, R., Paul, E., Rautenberg, J., Schnurbusch, H., Stifutkin, A., Tandler, J., Weber, A., Wieber, H., Bailey, D. S., Barret, O., Cottingham, W. N., Foster, B., Heath, G. P., Heath, H. F., Mcfall, J. D., Piccioni, D., Scott, J., Tapper, R. J., Capua, M., Mastroberardino, A., Schioppa, M., Susinno, G., Jeoung, H. Y., Kim, J. Y., Lee, J. H., Lim, I. T., Ma, K. J., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sacchi, R., Sampson, S., Sciulli, F., Zhu, Q., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Olkiewicz, K., Przybycień, M. B., Stopa, P., Zawiejski, L., Adamczyk, L., Bednarek, B., Jeleń, K., Kisielewska, D., Kowal, A. M., Kowalski, T., Przybycień, M., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Dulinński, Z., Kotanński, A., Bauerdick, L. A. T., Behrens, U., Bienlein, J. K., Burgard, C., Desler, K., Drews, G., Fox-Murphy, A., Fricke, U., Goebel, F., Göttlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G. F., Hasell, D., Hebbel, K., Johnson, K. F., Kasemann, M., Koch, W., Kötz, U., Kowalski, H., Lindemann, L., Löhr, B., Martinez, M., Milewski, J., Milite, M., Monteiro, T., Moritz, M., Notz, D., Pelucchi, F., Piotrzkowski, K., Rohde, M., Saull, P. R. B., Savin, A. A., Schneekloth, U., Schwarzer, O., Selonke, F., Sievers, M., Stonjek, S., Tassi, E., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Burow, B. D., Coldewey, C., Grabosch, H. J., Lopez-Duran Viani, A., Meyer, A., Mönig, K., Schlenstedt, S., Straub, P. B., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Raach, H., Wölfle, S., Brook, N. H., Bussey, P. J., Doyle, A. T., Lee, S. W., Macdonald, N., Mccance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Strickland, E., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gialas, I., Gladilin, L. K., Kçira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Bacon, T. C., Cole, J. E., Howell, G., Lamberti, L., Long, K. R., Miller, D. B., Prinias, A., Sedgbeer, J. K., Sideris, D., Tapper, A. D., Walker, R., Mallik, U., Wang, S. M., Cloth, P., Filges, D., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Ahn, S. H., An, S. H., Hong, S. J., Lee, S. B., Nam, S. W., Park, S. K., Lim, H., Park, I. H., Son, D., Barreiro, F., Fernandez, J. P., Garcia, G., Glasman, C., Hernández, J. M., Labarga, L., Del Peso, J., Puga, J., Redondo, I., Terrón, J., Corriveau, F., Hanna, D. S., Hartmann, J., Murray, W. N., Ochs, A., Padhi, S., Riveline, M., Stairs, D. G., St-Laurent, M., Wing, M., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Engelen, J., Koffeman, E., Kooijman, P., Sighem, A., Tiecke, H., Tuning, N., Velthuis, J. J., Verkerke, W., Vossebeld, J., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Blaikley, H. E., Boogert, S., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Große-Knetter, J., Harnew, N., Matsushita, T., Noyes, V. A., Quadt, A., Ruske, O., Sutton, M. R., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dondana, S., Dosselli, U., Dusini, S., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Iannotti, L., Oh, B. Y., Okrasiński, J. R., Toothacker, W. S., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Cormack, C., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Sadrozinski, H. F. -W, Seiden, A., Wichmann, R., Williams, D. C., Pavel, N., Abramowicz, H., Dagan, S., Kananov, S., Kreisel, A., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Nishimura, T., Arneodo, M., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Ruspa, M., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Fagerstroem, C. -P, Galea, R., Koop, T., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, A., Simmons, D., Butterworth, J. M., Catterall, C. D., Hayes, M. E., Heaphy, E. A., Jones, T. W., Lane, J. B., West, B. J., Ciborowski, J., Ciesielski, R., Grzelak, G., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Gadaj, T., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, R., Foudas, C., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wildschek, T., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Frisken, W. R., Hall-Wilton, R., Khakzad, M., Menary, S., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Weak interaction, Inelastic scattering, PROTON SCATTERING, 01 natural sciences, 7. Clean energy, JET FRAGMENTATION, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, RADIATIVE-CORRECTIONS, PARTON DISTRIBUTIONS, NUCLEON SCATTERING, BOSON PRODUCTION, EVENT GENERATOR, 0103 physical sciences, 010306 general physics, Engineering (miscellaneous), Event generator, Physics, Research Groups and Centres\Physics\Low Temperature Physics, Neutral current, 010308 nuclear & particles physics, Faculty of Science\Physics, HERA, Deep inelastic scattering, Energy (signal processing)
Abstract: The e^+p charged-current deep inelastic scattering cross sections, $d\sigma/dQ^2$ for Q^2 between 200 and 60000 GeV^2, and $d\sigma/dx$ and $d\sigma/dy$ for Q^2 > 200 GeV^2, have been measured with the ZEUS detector at HERA. A data sample of 47.7 pb^-1, collected at a center-of-mass energy of 300 GeV, has been used. The cross section $d\sigma/dQ^2$ falls by a factor of about 50000 as Q^2 increases from 280 to 30000 GeV^2. The double differential cross section $d^2\sigma/dxdQ^2$ has also been measured. A comparison between the data and Standard Model (SM) predictions shows that contributions from antiquarks ($\bar{u}$ and $\bar{c}$) and quarks (d and s) are both required by the data. The predictions of the SM give a good description of the full body of the data presented here. A comparison of the charged-current cross section $d\sigma/dQ^2$ with the recent ZEUS results for neutral-current scattering shows that the weak and electromagnetic forces have similar strengths for Q^2 above $M^2_W, M^2_Z$. A fit to the data for $d\sigma/dQ^2$ with the Fermi constant $G_F$ and $M_W$ as free parameters yields $G_F = (1.171 \pm 0.034 (stat.) ^{+0.026}_{-0.032} (syst.) ^{+0.016}_{-0.015} (PDF)) \times 10^{-5} GeV^{-2}$ and $M_W = 80.8 ^{+4.9}_{-4.5} (stat.) ^{+5.0}_{-4.3} (syst.) ^{+1.4}_{-1.3} (PDF) GeV$. Results for $M_W$, where the propagator effect alone or the SM constraint between $G_F$ and $M_W$ have been considered, are also presented., Comment: 34 pages including 10 figures and 6 tables; added tables for correlated and uncorrelated systematic uncertainties and fixed the total systematic uncertainty for dsigma/dxdQ2 (Table 4 and Figs.7-8); erratum submitted to Eur. Phys. J
Published: 2000
Full Text: View/download PDF

4. Measurement of $D^{\ast \pm}$ production and the charm contribution to $F_2$ in deep inelastic scattering at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, Mck, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, H, DE PASQUALE, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Kappes, A, Katz, Uf, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, Ds, Barret, O, Cottingham, Wn, Foster, B, Heath, Gp, Heath, Hf, Mcfall, Jd, Piccioni, D, Scott, J, Tapper, Rj, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, Hy, Kim, Jy, Lee, Jh, Lim, It, Ma, Kj, Pac, Hy, Caldwell, A, Liu, W, Liu, X, Mellado, B, Parsons, Ja, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, Mb, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, Am, Kowalski, T, Przybycien, M, RULIKOWSKA ZAREBSKA, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Burgard, C, Desler, K, Drews, G, FOX MURPHY, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, Gf, Hasell, D, Hebbel, K, Johnson, Kf, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, Mc, Piotrzkowski, K, Rohde, M, Saull, Prb, Savin, Aa, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, Bd, Coldewey, C, Grabosch, Hj, Viani, Ald, Meyer, A, Monig, K, Schlenstedt, S, Straub, Pb, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, Nh, Bussey, Pj, Doyle, At, Lee, Sw, Macdonald, N, Mccance, Gj, Saxon, Dh, Sinclair, Le, Skillicorn, Io, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, MEYER LARSEN, A, Salehi, H, Wick, K, Garfagnini, Alberto, Gialas, I, Gladilin, Lk, Kcira, K, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, Tc, Cole, Je, Howell, G, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Tapper, Ad, Walker, R, Mallik, U, Wang, Sm, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, Sh, An, Sh, Hong, Sj, Lee, Sb, Nam, Sw, Park, Sk, Lim, H, Park, Ih, Son, D, Barreiro, F, Fernandez, Jp, Garcia, G, Glasman, C, Hernandez, Jm, Labarga, L, DEL PESO, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, Ds, Hartmann, J, Murray, Wn, Ochs, A, Padhi, S, Riveline, M, Stairs, Dg, ST LAURENT, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, VAN SIGHEM, A, Tiecke, H, Tuning, N, Velthuis, Jj, Verkerke, W, Vossebeld, J, Wiggers, L, DE WOLF, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Blaikley, He, Boogert, S, Cashmore, Rj, COOPER SARKAR AM, Devenish, Rce, Edmonds, Jk, GROSSE KNETTER, J, Harnew, N, Matsushita, T, Noyes, Va, Quadt, A, Ruske, O, Sutton, Mr, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, DAL CORSO, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Iannotti, L, Oh, By, Okrasinski, Jr, Toothacker, Ws, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Sadrozinski, Hfw, Seiden, A, Wichmann, R, Williams, Dc, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Fagerstroem, Cp, Galea, R, Koop, T, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, Jm, Catterall, Cd, Hayes, Me, Heaphy, Ea, Jones, Tw, Lane, Jb, West, Bj, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, Rj, Pawlak, Jm, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, Wf, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, Dd, Smith, Wh, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, Vw, Bhadra, S, Frisken, Wr, HALL WILTON, R, Khakzad, M, Menary, S, Schmidke, Wb, CA ZEUS COLLABORATION, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, Meson, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Charm quark, Nuclear physics, High Energy Physics - Experiment (hep-ex), DESIGN, LEPTOPRODUCTION, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), QC, Physics, CONSTRUCTION, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS, CENTRAL TRACKING DETECTOR, HEAVY-QUARK CORRELATIONS, ZEUS BARREL CALORIMETER, PARTON DISTRIBUTIONS, EP SCATTERING, ELECTROPRODUCTION, FRAGMENTATION, Order (ring theory), HERA, Deep inelastic scattering, High Energy Physics::Experiment, Production (computer science)
Abstract: The production of D*+-(2010) mesons in deep inelastic scattering has been measured in the ZEUS detector at HERA using an integrated luminosity of 37 pb^-1. The decay channels D*+ -> D0 pi+(+c.c.), with D0 -> K- pi+ or D0 ->K- pi- pi+ pi+, have been used to identify the D mesons. The e+p cross section for inclusive D*+- production with 1, Comment: 35 pages, 9 figures. Correction 7/10/99: Figure 9 has been updated. Correction 3/04/00: Miss-prints in tables (1,2,3) and in Figure 5 have been corrected
Published: 2000
Full Text: View/download PDF

5. W production and the search for events with an isolated high-energy lepton and missing transverse momentum at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, Mck, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, DE PASQUALE, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Kappes, A, Katz, Uf, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, Ds, Barret, O, Cottingham, Wn, Foster, B, Heath, Gp, Heath, Hf, Mcfall, Jd, Piccioni, D, Scott, J, Tapper, Rj, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, Hy, Kim, Jy, Lee, Jh, Lim, It, Ma, Kj, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, Mb, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, Am, Kowalski, T, Przybycien, M, RULIKOWSKA ZAREBSKA, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Burgard, C, Desler, K, Drews, G, FOX MURPHY, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, Gf, Hasell, D, Hebbel, K, Johnson, Kf, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Piotrzkowski, K, Rohde, M, Saull, Prb, Savin, Aa, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, Bd, Coldewey, C, Grabosch, Hj, Viani, Ald, Meyer, A, Monig, K, Schlenstedt, S, Straub, Pb, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, Nh, Bussey, Pj, Doyle, At, Lee, Sw, Macdonald, N, Mccance, Gj, Saxon, Dh, Sinclair, Le, Skillicorn, Io, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, MEYER LARSEN, A, Salehi, H, Wick, K, Garfagnini, Alberto, Gialas, I, Gladilin, Lk, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, Tc, Cole, Je, Howell, G, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Tapper, Ad, Walker, R, Mallik, U, Wang, Sm, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, Sh, An, Sh, Hong, Sj, Lee, Sb, Nam, Sw, Park, Sk, Lim, H, Park, Ih, Son, D, Barreiro, F, Fernandez, Jp, Garcia, G, Glasman, C, Hernandez, Jm, Labarga, L, DEL PESO, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, Ds, Hartmann, J, Murray, Wn, Ochs, A, Padhi, S, Riveline, M, Stairs, Dg, ST LAURENT, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, VAN SIGHEM, A, Tiecke, H, Tuning, N, Velthuis, Jj, Verkerke, W, Vossebeld, J, Wiggers, L, DE WOLF, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Blaikley, He, Boogert, S, Cashmore, Rj, COOPER SARKAR AM, Devenish, Rce, Edmonds, Jk, GROSSE KNETTER, J, Harnew, N, Matsushita, T, Noyes, Va, Quadt, A, Ruske, O, Sutton, Mr, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, DAL CORSO, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Iannotti, L, Oh, By, Okrasinski, Jr, Toothacker, Ws, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Sadrozinski, Hfw, Seiden, A, Wichmann, R, Williams, Dc, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Fagerstroem, Cp, Galea, R, Koop, T, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, Jm, Catterall, Cd, Hayes, Me, Heaphy, Ea, Jones, Tw, Lane, Jb, West, Bj, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, Rj, Pawlak, Jm, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, Wf, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, Dd, Smith, Wh, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, Vw, Bhadra, S, Frisken, Wr, HALL WILTON, R, Khakzad, M, Menary, S, Schmidke, Wb, CA ZEUS COLLABORATION, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, MONTE-CARLO GENERATOR, Proton, Hadron, FOS: Physical sciences, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, JET FRAGMENTATION, BOSON PRODUCTION, GAMMA COUPLINGS, E+E-PHYSICS, CONSTRUCTION, DESIGN, PROTON, 7. Clean energy, 01 natural sciences, Zeus (malware), High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, QC, Boson, Physics, Research Groups and Centres\Physics\Low Temperature Physics, Luminosity (scattering theory), Faculty of Science\Physics, 010308 nuclear & particles physics, HERA, High Energy Physics::Experiment, Lepton
Abstract: A search for the leptonic decays of W bosons produced in the reaction e^+ p\to e^+ W^\pm X at a centre-of-mass energy of 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb^-1 . Three events consistent with W\to e\nu decay are found, giving a cross section of 0.9 +1.0 -0.7 \pm 0.2 pb, in good agreement with the Standard Model prediction. The corresponding 95% C.L. upper limit on the cross section is 3.3 pb. A search for the decay W\to \mu\nu has a smaller selection efficiency and yields no candidate events. Limits on the cross section for W production with large hadronic transverse momentum have been obtained. A search for high-transverse-momentum isolated tracks in events with large missing transverse momentum yields results in good agreement with Standard Model expectations, in contrast to a recent report by the H1 collaboration of the observation of an excess of such events., Comment: 17 pages including 7 figures and 2 tables, final version for Phys.Lett
Published: 2000
Full Text: View/download PDF

6. Search for resonance decays to an $\overline v$-neutrino plus jet in $\mathrm{e^+ p}$ scattering at DESY HERA

Author: Breitweg, J., Chekanov, S., Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Pellegrino, A., Repond, J., Stanek, R., Yoshida, R., Mattingly, M. C. K., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., De Pasquale, S., Giusti, P., Iacobucci, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Sartorelli, G., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Hartmann, H., Heinloth, K., Hilger, E., Irrgang, P., Jakob, H. P., Kappes, A., Katz, U. F., Kerger, R., Paul, E., Rautenberg, J., Schnurbusch, H., Stifutkin, A., Tandler, J., Voss, K. C., Weber, A., Wieber, H., Bailey, D. S., Barret, O., Brook, N. H., Foster, B., Heath, G. P., Heath, Helen F., Rodrigues, E., Scott, J., Tapper, R. J., Capua, M., Mastroberardino, A., Schioppa, M., Susinno, G., Jeoung, H. Y., Kim, J. Y., Lee, J. H., Lim, I. T., Ma, K. J., Pac, M. Y., Caldwell, A., Liu, W., Liu, X., Mellado, B., Paganis, S., Sampson, S., Schmidke, W. B., Sciulli, F., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Olkiewicz, K., Piotrzkowski, K., Przybycien, M. B., Stopa, P., Zawiejski, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowal, A. M., Kowalski, T., Przybycien, M., Rulikowska-Zarebska, E., Suszycki, L., Szuba, D., Kotanski, A., Bauerdick, L. A. T., Behrens, U., Bienlein, J. K., Borras, K., Chiochia, V., Dannheim, D., Desler, K., Drews, G., Fox-Murphy, A., Fricke, U., Goebel, F., Goers, S., Gottlicher, P., Graciani, R., Haas, Tobias M., Hain, W., Hartner, G. F., Hasell, D., Hebbel, K., Hillert, S., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labes, H., Lindemann, L., Lohr, B., Mankel, R., Martens, J., Martinez, M., Milite, M., Moritz, M., Notz, D., Petrucci, M. C., Polini, A., Rohde, M., Savin, A. A., Schneekloth, U., Selonke, F., Sievers, M., Stonjek, S., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Coldewey, C., Lopez-Duran-Viani, Amaya, Meyer, A., Schlenstedt, S., Straub, P. B., Barbagli, G., Gallo, E., Parenti, A., Pelfer, P. G., Bamberger, A., Benen, A., Coppola, N., Eisenhardt, S., Markun, P., Raach, H., Wolfle, S., Bussey, P. J., Bell, M., Doyle, A. T., Glasman, C., Lee, S. W., Lupi, A., Macdonald, N., McCance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Carli, T., Garfagnini, A., Gialas, I., Gladilin, L. K., Kcira, D., Klanner, R., Lohrmann, E., Goncalo, R., Long, K. R., Miller, D. B., Tapper, A. D., Walker, R., Mallik, U., Cloth, P., Filges, D., Ishii, T., Kuze, M., Nagano, K., Tokushuku, K., Yamada, S., Yamazaki, Y., Ahn, S. H., Lee, S. B., Park, S. K., Lim, H., Park, I. H., Son, D., Barreiro, F., Garcia, G., Gonzalez, O., Labarga, L., Del Peso, J., Redondo, I., Terron, J., Vazquez Acosta, Monica Luisa, Barbi, M., Corriveau, F., Hanna, D. S., Ochs, A., Padhi, S., Stairs, D. G., Wing, M., Tsurugai, T., Antonov, A., Bashkirov, V., Danilov, M., Dolgoshein, B. A., Gladkov, D., Sosnovtsev, V., Suchkov, S., Dementev, R. K., Ermolov, P. F., Golubkov, Yu. A., Katkov, I. I., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Vlasov, N. N., Zotkin, S. A., Bokel, C., Botje, M., Brummer, N., Engelen, J., Grijpink, S., Koffeman, E., Kooijman, P., Schagen, S., Van Sighem, Adrianus Izaak, Tassi, E., Tiecke, H., Tuning, N., Velthuis, J. J., Vossebeld, J., Wiggers, L., De Wolf, E., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Boogert, S., Cooper-Sarkar, Amanda M., Devenish, R. C. E., Grosse-Knetter, J., Matsushita, T., Ruske, O., Sutton, M. R., Walczak, R., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Dusini, S., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Turcato, M., Voci, C., Adamczyk, L., Iannotti, L., Oh, B. Y., Okrasinski, J. R., Saull, P. R. B., Toothacker, W. S., Whitmore, J. J., Iga, Y., D'Agostini, G., Marini, G., Nigro, A., Cormack, C., Hart, J. C., McCubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Sadrozinski, H. F. W., Seiden, A., Wichmann, R., Williams, D. C., Pavel, N., Abramowicz, H., Dagan, S., Kananov, S., Kreisel, A., Levy, A., Abe, T., Fusayasu, T., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Inuzuka, M., Kitamura, S., Nishimura, T., Arneodo, M., Cartiglia, N., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Bailey, David C., Fagerstroem, C. P., Galea, R., Koop, T., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, Ali, Simmons, D., Butterworth, J. M., Catterall, C., Hayes, M. E., Heaphy, E. A., Jones, T. W., Lane, J. B., West, B. J., Ciborowski, J., Ciesielski, R., Grzelak, G., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, Janusz Andrzej, Zarnecki, A. F., Adamus, M., Gadaj, T., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, Richard N., Foudas, C., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wildschek, T., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Cole, J. E., Frisken, William R., Hall-Wilton, R., Khakzad, M., and Menary, Scott R.
Subjects: R parity: violation, leptoquark: coupling, approx. 300 GeV-cms, resonance: vector, ZEUS, positron p: colliding beams, squark, mass spectrum, jet: electroproduction, DESY HERA Stor, narrow resonance: search for, +positron+anything%22">positron p --> positron anything, channel cross section: branching ratio, antineutrino: associated production, resonance: scalar, upper limit, +jet+antineutrino+anything%22">positron p --> jet antineutrino anything, experimental results
Abstract: Physical review / D 63(5), 052002 (2001). doi:10.1103/PhysRevD.63.052002, A study of the antineutrino-jet mass spectrum in e^+p -> antineutrino+X events at center-of-mass energy 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb^-1. The mass spectrum is in good agreement with that expected from Standard Model processes over the antineutrino -jet mass range studied. No significant excess attributable to the decay of a narrow resonance is observed. By using both e^+p -> e^+ X and e^+p -> antineutrino X data, mass-dependent limits are set on the s-channel production of scalar and vector resonant states. Couplings to first-generation quarks are considered and limits are presented as a function of the e^+q and antineutrino-q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks., Published by APS, Woodbury, NY
Published: 2001
Full Text: View/download PDF

7. Measurement of inclusive prompt photon photoproduction at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, K C, Weber, A, Wieber, H, Bailey, D S, Barret, O, Brook, N H, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Rodrigues, E, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Liu, W, Liu, X, Mellado, B, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, M B, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, M C, Piotrzkowski, K, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Grabosch, H J, Viani, A L D, Meyer, A, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, P J, Doyle, A T, Lee, S W, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, K R, Miller, D B, Tapper, A D, Walker, R, Mallik, U, Wang, S M, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, S H, An, S H, Hong, S J, Lee, S B, Nam, S W, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, D S, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Bashindzhagyan, G L, Ermolov, P F, Golubkov, Y A, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Nylander, P, Boogert, S, Cooper-Sarkar, A M, Devenish, R C E, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, M R, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, West, B J, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Cole, J E, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, W B, ZEUS Collaboration, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Parton, PROTON, 01 natural sciences, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, DESIGN, law, 0103 physical sciences, ZEUS, CENTRAL TRACKING DETECTOR, JET CROSS-SECTIONS, PARTON DISTRIBUTIONS, HARD SCATTERING, CONSTRUCTION, CALORIMETER, 010306 general physics, Collider, Nuclear Experiment, QC, Quantum chromodynamics, Physics, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, Faculty of Science\Physics, HERA, Photon structure function, Pseudorapidity, High Energy Physics::Experiment
Abstract: First inclusive measurements of isolated prompt photons in photoproduction at the HERA ep collider have been made with the ZEUS detector, using an integrated luminosity of 38.4 pb$^{-1}$. Cross sections are given as a function of the pseudorapidity and the transverse energy ($\eta^\gamma$, \eTg) of the photon, for $\eTg > $ 5 GeV in the $\gamma p$ centre-of-mass energy range 134-285 GeV. Comparisons are made with predictions from Monte Carlo models having leading-logarithm parton showers, and with next-to-leading-order QCD calculations, using currently available parameterisations of the photon structure. For forward $\eta^\gamma$ (proton direction) good agreement is found, but in the rear direction all predictions fall below the data., Comment: 21 pages including 4 figures and 2 tables
Published: 2001
Full Text: View/download PDF

8. Measurement of dijet cross sections for events with a leading neutron in photoproduction at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Sartorelli, G, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Irrgang, P, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, KC, Weber, A, Wieber, H, Bailey, DS, Barret, O, Brook, NH, Foster, B, Heath, GP, Heath, HF, Rodrigues, E, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sampson, S, Schmidke, WB, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, MB, Stopa, P, Zawiejski, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, LAT, Behrens, U, Bienlein, JK, Borras, K, Chiochia, V, Dannheim, D, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Goers, S, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hebbel, K, Hillert, S, Koch, W, Kotz, U, Kowalski, H, Labes, H, Lohr, B, Mankel, R, Martens, J, Martinez, M, Milite, M, Moritz, M, Notz, D, Petrucci, MC, Polini, A, Rohde, M, Savin, AA, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Viani, ALD, Meyer, A, Schlenstedt, S, Straub, PB, Barbagli, G, Gallo, E, Parenti, A, Pelfer, PG, Bamberger, A, Benen, A, Coppola, N, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, PJ, Bell, M, Doyle, AT, Glasman, C, Lee, SW, Lupi, A, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Carli, T, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Goncalo, R, Long, KR, Miller, DB, Tapper, AD, Walker, R, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, SH, Lee, SB, Park, SK, Lim, H, Son, D, Barreiro, F, Garcia, G, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Vazquez, M, Barbi, M, Corriveau, F, Hanna, DS, Ochs, A, Padhi, S, Stairs, DG, Wing, M, Tsurugai, T, Antonov, A, Bashkirov, V, Danilov, M, Dolgoshein, BA, Gladkov, D, Sosnovtsev, V, Suchkov, S, Dementiev, RK, Ermolov, PF, Golubkov, YA, Katkov, II, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Vlasov, NN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tassi, E, Tiecke, H, Tuning, N, Velthuis, JJ, Vossebeld, J, Wiggers, L, de Wolf, E, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Boogert, S, Cooper-Sarkar, AM, Devenish, RCE, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, MR, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dusini, S, Limentani, S, Longhin, A, Posocco, M, Stanco, L, Turcato, M, Adamczyk, L, Iannotti, L, Oh, BY, Okrasinski, JR, Saull, PRB, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Park, IH, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Kohno, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Matsuzawa, K, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JF, Mirea, A, Sabetfakhri, A, Butterworth, JM, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, West, BJ, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Catterall, C, Cole, JE, Frisken, WR, Hall-Wilton, R, Khakzad, M, Menary, S, Collaboration, ZEUS, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, 100 GEV-C, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Hadron, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, DEEP-INELASTIC SCATTERING, High Energy Physics - Experiment (hep-ex), ZEUS, NN FORM-FACTOR, CTEQ PARTON DISTRIBUTIONS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, TRIPLE-REGGEON MODEL, PION EXCHANGE, INCLUSIVE REACTIONS, MONTE-CARLO, 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics, QC, Physics, Jet (fluid), Luminosity (scattering theory), ZEUS (particle detector), 010308 nuclear & particles physics, HERA, Neutron temperature, High Energy Physics::Experiment, Lepton
Abstract: Differential cross sections for dijet photoproduction in association with a leading neutron using the reaction e^+ + p --> e^+ + n + jet + jet + X_r have been measured with the ZEUS detector at HERA using an integrated luminosity of 6.4 pb^{-1}. The fraction of dijet events with a leading neutron in the final state was studied as a function of the jet kinematic variables. The cross sections were measured for jet transverse energies E^{jet}_T > 6 GeV, neutron energy E_n > 400 GeV, and neutron production angle theta_n < 0.8 mrad. The data are broadly consistent with factorization of the lepton and hadron vertices and with a simple one-pion-exchange model., 28 pages, 9 figures, accepted by Nuclear Physics B, correction to neutron yield
Published: 2001

9. Search for resonance decays to an $\overline v$-neutrino plus jet in $\mathrm{e^+ p}$ scattering at DESY HERA

Author: Breitweg, J., Chekanov, S., Mattingly, M. C. K., Szuba, D., Kotanski, A., Bauerdick, L. A. T., Behrens, U., Bienlein, J. K., Borras, K., Chiochia, V., Dannheim, D., Desler, K., Drews, G., Antonioli, P., Fox-Murphy, A., Fricke, U., Goebel, F., Goers, S., Gottlicher, P., Graciani, R., Haas, Tobias M., Hain, W., Hartner, G. F., Hasell, D., Bari, G., Hebbel, K., Hillert, S., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labes, H., Lindemann, L., Lohr, B., Mankel, R., Basile, M., Martens, J., Martinez, M., Milite, M., Moritz, M., Notz, D., Petrucci, M. C., Polini, A., Rohde, M., Savin, A. A., Schneekloth, U., Bellagamba, L., Selonke, F., Sievers, M., Stonjek, S., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Coldewey, C., Lopez-Duran-Viani, Amaya, Meyer, A., Boscherini, D., Schlenstedt, S., Straub, P. B., Barbagli, G., Gallo, E., Parenti, A., Pelfer, P. G., Bamberger, A., Benen, A., Coppola, N., Eisenhardt, S., Bruni, A., Markun, P., Raach, H., Wolfle, S., Bussey, P. J., Bell, M., Doyle, A. T., Glasman, C., Lee, S. W., Lupi, A., Macdonald, N., Bruni, G., McCance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Cara Romeo, G., Wick, K., Carli, T., Garfagnini, A., Gialas, I., Gladilin, L. K., Kcira, D., Klanner, R., Lohrmann, E., Goncalo, R., Long, K. R., Cifarelli, L., Miller, D. B., Tapper, A. D., Walker, R., Mallik, U., Cloth, P., Filges, D., Ishii, T., Kuze, M., Nagano, K., Tokushuku, K., Derrick, M., Cindolo, F., Yamada, S., Yamazaki, Y., Ahn, S. H., Lee, S. B., Park, S. K., Lim, H., Park, I. H., Son, D., Barreiro, F., Garcia, G., Contin, A., Gonzalez, O., Labarga, L., del Peso, J., Redondo, I., Terron, J., Vazquez Acosta, Monica Luisa, Barbi, M., Corriveau, F., Hanna, D. S., Ochs, A., Corradi, M., Padhi, S., Stairs, D. G., Wing, M., Tsurugai, T., Antonov, A., Bashkirov, V., Danilov, M., Dolgoshein, B. A., Gladkov, D., Sosnovtsev, V., De Pasquale, S., Suchkov, S., Dementev, R. K., Ermolov, P. F., Golubkov, Yu. A., Katkov, I. I., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu., Giusti, P., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Vlasov, N. N., Zotkin, S. A., Bokel, C., Botje, M., Brummer, N., Engelen, J., Grijpink, S., Iacobucci, G., Koffeman, E., Kooijman, P., Schagen, S., van Sighem, Adrianus Izaak, Tassi, E., Tiecke, H., Tuning, N., Velthuis, J. J., Vossebeld, J., Wiggers, L., Levi, G., de Wolf, E., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Boogert, S., Cooper-Sarkar, Amanda M., Devenish, R. C. E., Margotti, A., Grosse-Knetter, J., Matsushita, T., Ruske, O., Sutton, M. R., Walczak, R., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Massam, T., Dusini, S., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Turcato, M., Voci, C., Adamczyk, L., Iannotti, L., Nania, R., Oh, B. Y., Okrasinski, J. R., Saull, P. R. B., Toothacker, W. S., Whitmore, J. J., Iga, Y., D'Agostini, G., Marini, G., Nigro, A., Cormack, C., Krakauer, D., Palmonari, F., Hart, J. C., McCubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Sadrozinski, H. F. W., Seiden, A., Wichmann, R., Williams, D. C., Pavel, N., Pesci, A., Abramowicz, H., Dagan, S., Kananov, S., Kreisel, A., Levy, A., Abe, T., Fusayasu, T., Umemori, K., Yamashita, T., Hamatsu, R., Sartorelli, G., Hirose, T., Inuzuka, M., Kitamura, S., Nishimura, T., Arneodo, M., Cartiglia, N., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Zichichi, A., Monaco, V., Peroni, C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Bailey, David C., Fagerstroem, C. P., Galea, R., Koop, T., Amelung, C., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, Ali, Simmons, D., Butterworth, J. M., Catterall, C., Hayes, M. E., Heaphy, E. A., Bornheim, A., Jones, T. W., Lane, J. B., West, B. J., Ciborowski, J., Ciesielski, R., Grzelak, G., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Brock, I., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, Janusz Andrzej, Zarnecki, A. F., Adamus, M., Gadaj, T., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Coboken, K., Badgett, W. F., Chapin, D., Cross, Richard N., Foudas, C., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wildschek, T., Wodarczyk, M., Crittenden, J., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Cole, J. E., Frisken, William R., Hall-Wilton, R., Khakzad, M., Menary, Scott R., Deffner, R., ZEUS Collaboration, Magill, S., Hartmann, H., Heinloth, K., Hilger, E., Irrgang, P., Jakob, H. P., Kappes, A., Katz, U. F., Kerger, R., Paul, E., Rautenberg, J., Musgrave, B., Schnurbusch, H., Stifutkin, A., Tandler, J., Voss, K. C., Weber, A., Wieber, H., Bailey, D. S., Barret, O., Brook, N. H., Foster, B., Pellegrino, A., Heath, G. P., Heath, Helen F., Rodrigues, E., Scott, J., Tapper, R. J., Capua, M., Mastroberardino, A., Schioppa, M., Susinno, G., Jeoung, H. Y., Repond, J., Kim, J. Y., Lee, J. H., Lim, I. T., Ma, K. J., Pac, M. Y., Caldwell, A., Liu, W., Liu, X., Mellado, B., Paganis, S., Stanek, R., Sampson, S., Schmidke, W. B., Sciulli, F., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Olkiewicz, K., Piotrzkowski, K., Przybycien, M. B., Yoshida, R., Stopa, P., Zawiejski, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowal, A. M., Kowalski, T., Przybycien, M., Rulikowska-Zarebska, E., and Suszycki, L.
Subjects: electroproduction [jet], violation [R parity], branching ratio [channel cross section], +jet+antineutrino+anything%22">positron p --> jet antineutrino anything, associated production [antineutrino], scalar [resonance], approx. 300 GeV-cms, search for [narrow resonance], ZEUS, squark, colliding beams [positron p], mass spectrum, DESY HERA Stor, vector [resonance], +positron+anything%22">positron p --> positron anything, High Energy Physics::Experiment, ddc:530, upper limit, coupling [leptoquark], experimental results
Abstract: A study of the antineutrino-jet mass spectrum in e^+p -> antineutrino+X events at center-of-mass energy 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb^-1. The mass spectrum is in good agreement with that expected from Standard Model processes over the antineutrino -jet mass range studied. No significant excess attributable to the decay of a narrow resonance is observed. By using both e^+p -> e^+ X and e^+p -> antineutrino X data, mass-dependent limits are set on the s-channel production of scalar and vector resonant states. Couplings to first-generation quarks are considered and limits are presented as a function of the e^+q and antineutrino-q branching ratios. These limits are used to constrain the production of leptoquarks and R-parity violating squarks.
Published: 2001
Full Text: View/download PDF

10. Measurement of the proton structure function F-2 at very low Q(2) at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Irrgang, P, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, K C, Weber, A, Wieber, H, Bailey, D S, Barret, O, Brook, N H, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Rodrigues, E, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sampson, S, Schmidke, W B, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, M B, Stopa, P, Zawiejski, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Dannheim, D, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, M C, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Viani, A L D, Meyer, A, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Benen, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, P J, Bell, M, Doyle, A T, Lee, S W, Lupi, A, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, K R, Miller, D B, Tapper, A D, Walker, R, Mallik, U, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, S H, Lee, S B, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, D S, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, Wing, M, Tsurugai, T, Antonov, A, Bashkirov, V, Danilov, M, Dolgoshein, B A, Gladkov, D, Sosnovtsev, V, Suchkov, S, Dementiev, R K, Ermolov, P F, Golubkov, Y A, Katkov, I I, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Vlasov, N N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Boogert, S, Cooper-Sarkar, A M, Devenish, R C E, Grosse-Knetter, J, Matsushita, T, Quadt, A, Ruske, O, Sutton, M R, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Turcato, M, Voci, C, Adamczyk, L, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, West, B J, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Catterall, C, Cole, J E, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, ZEUS Collaboration, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Proton, LUND MONTE-CARLO, Hadron, FOS: Physical sciences, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, DEEP-INELASTIC SCATTERING, ENERGY, High Energy Physics - Experiment (hep-ex), Positron, LOW-X, 0103 physical sciences, 010306 general physics, QC, Physics, Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), E+E-PHYSICS, 010308 nuclear & particles physics, Scattering, Faculty of Science\Physics, ZEUS, HERA, Deep inelastic scattering, GENERATOR, MODEL, QCD, EP, Regge theory, High Energy Physics::Experiment
Abstract: A measurement of the proton structure function F_2(x,Q^2) is presented in the kinematic range 0.045 GeV^2 < Q^2 < 0.65 GeV^2 and 6*10^{-7} < x < 1*10^{-3}. The results were obtained using a data sample corresponding to an integrated luminosity of 3.9pb^-1 in e^+p reactions recorded with the ZEUS detector at HERA. Information from a silicon-strip tracking detector, installed in front of the small electromagnetic calorimeter used to measure the energy of the final-state positron at small scattering angles, together with an enhanced simulation of the hadronic final state, has permitted the extension of the kinematic range beyond that of previous measurements. The uncertainties in F_2 are typically less than 4%. At the low Q^2 values of the present measurement, the rise of F_2 at low x is slower than observed in HERA data at higher Q^2 and can be described by Regge theory with a constant logarithmic slope. The dependence of F_2 on Q^2 is stronger than at higher Q^2 values, approaching, at the lowest Q^2 values of this measurement, a region where F_2 becomes nearly proportional to Q^2., 23 pages including 4 figures. Revised version (v2) has a corrected author list and implements comments from the referee. Accepted by Phys. Lett. B
Published: 2000

11. The Q(2) dependence of dijet cross sections in gamma p interactions at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Irrgang, P, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, K C, Weber, A, Wieber, H, Bailey, D S, Barret, O, Brook, N H, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Rodrigues, E, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, M B, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, M C, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Grabosch, H J, Viani, A L D, Meyer, A, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Benen, A, Eisenhardt, S, Markun, P, Raach, P, Wolfle, S, Bussey, P J, Doyle, A T, Lee, S W, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Dannheim, D, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, K R, Miller, D B, Tapper, A D, Walker, R, Mallik, U, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, S H, An, S H, Hong, S J, Lee, S B, Nam, S W, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, D S, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Dementiev, R K, Ermolov, P F, Golubkov, Y A, Katkov, I I, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Vlasov, N N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Vossebeld, J, Wiggers, L, de Wolf, E, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Nylander, P, Boogert, S, Cooper-Sarkar, A M, Devenish, R C E, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, M R, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, West, B J, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Cole, J E, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, W B, ZEUS Collaborat, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, LEADING ORDER QCD, Virtual particle, FOS: Physical sciences, ZEUS, PHOTON STRUCTURE-FUNCTION, STRUCTURE-FUNCTION F-2(GAMMA), VIRTUAL PHOTON, JET PRODUCTION, PARTON DISTRIBUTIONS, HADRON-COLLISIONS, HARD SCATTERING, PHOTOPRODUCTION, GEV2, Parton, Elementary particle, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, 010306 general physics, Nuclear Experiment, QC, Physics, Research Groups and Centres\Physics\Low Temperature Physics, 010308 nuclear & particles physics, Faculty of Science\Physics, Perturbative QCD, HERA, Photon structure function, Massless particle, High Energy Physics::Experiment
Abstract: The dependence of the photon structure on the photon virtuality, Q^2, is studied by measuring the reaction e^+p\to e^+ + {\rm jet} + {\rm jet} + {\rm X} at photon-proton centre-of-mass energies 134 < W < 223 GeV. Events have been selected in the Q^2 ranges \approx 0 GeV^2, 0.1-0.55 GeV^2, and 1.5-4.5 GeV^2, having two jets with transverse energy E_T^{jet} > 5.5 GeV in the final state. The dijet cross section has been measured as a function of the fractional momentum of the photon participating in the hard process, x_gamma. The ratio of the dijet cross section with x_gamma < 0.75 to that with x_gamma > 0.75 decreases as Q^2 increases. The data are compared with the predictions of NLO pQCD and leading-order Monte Carlo programs using various parton distribution functions of the photon. The measurements can be interpreted in terms of a resolved photon component that falls with Q^2 but remains present at values of Q^2 up to 4.5 GeV^2. However, none of the models considered gives a good description of the data., 15 pages and 4 figures
Published: 2000

12. Angular and current-target correlations in deep inelastic scattering at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, Mck, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, DE PASQUALE, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Kappes, A, Katz, Uf, Kerger, R, Paul, E, Pfeiffer, M, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, Ds, Barret, O, Cottingham, Wn, Foster, B, Heath, Gp, Heath, Hf, Mcfall, Jd, Piccioni, D, Scott, J, Tapper, Rj, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, Hy, Kim, Jy, Lee, Jh, Lim, It, Ma, Kj, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, Mb, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, Am, Kowalski, T, Przybycien, M, RULIKOWSKA ZAREBSKA, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Burgard, C, Desler, K, Drews, G, FOX MURPHY, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, Gf, Hasell, D, Hebbel, K, Johnson, Kf, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Piotrzkoswski, K, Rohde, M, Saull, Prb, Savin, Aa, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, Bd, Coldewey, C, Grabosch, Hj, Viani, Ald, Meyer, A, Monig, K, Schlenstedt, S, Straub, Pb, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, Nh, Bussey, Pj, Doyle, At, Lee, Sw, Macdonald, N, Mccance, Gj, Saxon, Dh, Sinclair, Le, Skillicorn, Io, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, MEYER LARSEN, A, Salehi, H, Wick, K, Garfagnini, Alberto, Gialas, I, Gladilin, Lk, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, Tc, Cole, Je, Howell, G, Lamberti, L, Long, Kr, Miller, Db, Prinias, A, Sedgbeer, Jk, Sideris, D, Tapper, Ad, Walker, R, Mallik, U, Wang, Sm, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, Sh, An, Sh, Hong, Sj, Lee, Sb, Nam, Sw, Park, Sk, Lim, H, Park, Ih, Son, D, Barreiro, F, Fernandez, Jp, Garcia, G, Glasman, C, Hernandez, Jm, Labarga, L, DEL PESO, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, Ds, Hartmann, J, Murray, Wn, Ochs, A, Padhi, S, Riveline, M, Stairs, Dg, ST LAURENT, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, VAN SIGHEM, A, Tiecke, W, Tuning, N, Velthuis, Jj, Verkerke, W, Vossebeld, J, Wiggers, L, DE WOLF, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Blaikley, He, Boogert, S, Cashmore, Rj, COOPER SARKAR AM, Devenish, Rce, Edmonds, Jk, GROSSE KNETTER, J, Harnew, N, Matsushita, T, Noyes, Va, Quadt, A, Ruske, O, Sutton, Mr, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, DAL CORSO, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Iannotti, L, Oh, By, Okrasinski, Jr, Toothacker, Ws, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Sadrozinski, Hfw, Seiden, A, Wichmann, R, Williams, Dc, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Schechter, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Fagerstroem, Cp, Galea, R, Koop, T, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, Jm, Catterall, Cd, Hayes, Me, Heapby, Ea, Jones, Tw, Lane, Jb, Ciborowski, J, Grzelak, G, Nowak, Rj, Pawlak, Jm, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, Wf, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, Dd, Smith, Wh, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, Vw, Bhadra, S, Frisken, Wr, HALL WILTON, R, Khakzad, M, Menary, S, Schmidke, Wb, CA ZEUS COLLABORATION, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, MONTE-CARLO GENERATOR, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Virtual particle, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, QCD JETS, HADRON SPECTRA, High Energy Physics - Experiment (hep-ex), PBARP COLLISIONS, PROTON-SCATTERING, 0103 physical sciences, EVENT GENERATOR, CHARGED-PARTICLE MULTIPLICITY, 010306 general physics, Engineering (miscellaneous), QC, Quantum chromodynamics, Physics, PP COLLISIONS, 010308 nuclear & particles physics, Angular distance, Scattering, MOMENTUM SPECTRA, ZEUS, HERA, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: Correlations between charged particles in deep inelastic ep scattering have been studied in the Breit frame with the ZEUS detector at HERA using an integrated luminosity of 6.4 pb-1. Short-range correlations are analysed in terms of the angular separation between current-region particles within a cone centred around the virtual photon axis. Long-range correlations between the current and target regions have also been measured. The data support predictions for the scaling behaviour of the angular correlations at high Q2 and for anti-correlations between the current and target regions over a large range in Q2 and in the Bjorken scaling variable x. Analytic QCD calculations and Monte Carlo models correctly describe the trends of the data at high Q2, but show quantitative discrepancies. The data show differences between the correlations in deep inelastic scattering and e+e- annihilation., 26 pages including 10 figures (submitted to Eur. J. Phys. C)
Published: 2000

13. Measurement of jet shapes in high-Q(2) deep inelastic scattering at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, CG, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Desler, K, Drews, G, F'ricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Krozhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Hayes, ME, Jones, TW, Lane, J, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: Astrophysics::High Energy Astrophysical Phenomena, ZEUS, P(P)OVER-BAR COLLISIONS, CROSS-SECTIONS, PARTON DISTRIBUTIONS, HADRON COLLIDERS, 3-JET EVENTS, QCD CASCADES, EP, PHOTOPRODUCTION, QUARK, TEV, High Energy Physics::Experiment
Abstract: The shapes of jets with transverse energies, EjetT, up to 45 GeV produced in neutral- and charged-current deep inelastic e+p scattering (DIS) at Q2 > 100 GeV2 have been measured with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the η-φ plane with a cone radius of one unit. The jets become narrower as EjetT increases. The jet shapes in neutral- and charged-current DIS are found to be very similar. The jets in neutral-current DIS are narrower than those in resolved processes in photoproduction and closer to those in direct-photon processes for the same ranges in EjetT and jet pseudorapidity. The jet shapes in DIS are observed to be similar to those in e+e- interactions and narrower than those in p̄p collisions for comparable EjetT. Since the jets in e+e- interactions and e+p DIS are predominantly quark initiated in both cases, the similarity in the jet shapes indicates that the pattern of QCD radiation within a quark jet is to a large extent independent of the hard scattering process in these reactions.
Published: 1999

14. Exclusive electroproduction of rho(0) and J/psi mesons at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Schnurbusch, H, Weber, A, Wieber, H, Bailey, DS, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Scott, J, Tapper, RJ, Capua, M, Iannotti, L, Mastroberardino, A, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Desler, K, Drews, G, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, del Peso, J, Puga, J, Redondo, I, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, and Schmidke, WB
Subjects: ZEUS, INELASTIC E(+)P SCATTERING, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, LUND MONTE-CARLO, VECTOR-MESON, DIFFRACTIVE ELECTROPRODUCTION, PARTON DISTRIBUTIONS, PROTON-SCATTERING, ELASTIC PHOTOPRODUCTION, PHI PHOTOPRODUCTION
Published: 1999

15. Forward jet production in deep inelastic scattering at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, CaraRomeo, G, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Stamm, J, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Ayad, R, Capua, M, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Desler, K, Drews, G, Fricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Milewski, J, Milite, M, Monteiro, T, Ng, JST, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneckloth, U, Schwarzer, O, Selonke, F, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, V, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Hayes, ME, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, Collaboration, ZEUS, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Particle physics, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, ENERGY, High Energy Physics - Experiment (hep-ex), QCD COHERENCE, 0103 physical sciences, EVENT GENERATOR, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Rapidity, 010306 general physics, Parton shower, Nuclear Experiment, Engineering (miscellaneous), LOW-X REGIME, Event generator, Quantum chromodynamics, Physics, Jet (fluid), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, MOMENTUM SPECTRA, ZEUS, ZEUS BARREL CALORIMETER, HERA, TO-LEADING ORDER, PARTON DISTRIBUTIONS, EP SCATTERING, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: The production of forward jets has been measured in deep inelastic ep collisions at HERA. The results are presented in terms of single differential cross sections as a function of the Bjorken scaling variable (x_{Bj}) and as triple differential cross sections d^3 \sigma / dx_{Bj} dQ^2 dp_{t,jet}^2, where Q^2 is the four momentum transfer squared and p_{t,jet}^2 is the squared transverse momentum of the forward jet. Also cross sections for events with a di-jet system in addition to the forward jet are measured as a function of the rapidity separation between the forward jet and the two additional jets. The measurements are compared with next-to-leading order QCD calculations and with the predictions of various QCD-based models., Comment: 27 pages, 10 figures, 4 tables
Published: 1999
Full Text: View/download PDF

16. Measurement of the E(T,jet)^2/Q^2 dependence of forward-jet production at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, C G, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, K C, Weber, A, Wieber, H, Bailey, D S, Barret, O, Brook, N H, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Rodrigues, E, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Liu, W, Liu, X, Mellado, B, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, M B, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, M C, Piotrzkowski, K, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Grabosch, H J, Viani, A L D, Meyer, A, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, P J, Doyle, A T, Lee, S W, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, K R, Miller, D B, Tapper, A D, Walker, R, Mallik, U, Wang, S M, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, S H, An, S H, Hong, S J, Lee, S B, Nam, S W, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, D S, Hartmann, J, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Bashindzhagyan, G L, Ermolov, P F, Golubkov, Y A, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Nylander, P, Boogert, S, Cooper-Sarkar, A M, Devenish, R C E, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, M R, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, KReisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kiatmura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, Weest, B J, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Cole, J E, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, W B, ZEUS Collaboration, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, CASCADES, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), High Energy Physics - Experiment (hep-ex), QCD COHERENCE, 0103 physical sciences, DISTRIBUTIONS, SCATTERING, 010303 astronomy & astrophysics, SMALL-X, QC, Quantum chromodynamics, Physics, Jet (fluid), Research Groups and Centres\Physics\Low Temperature Physics, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, Scattering, Faculty of Science\Physics, ZEUS, INITIAL STATE RADIATION, GENERATOR, HERA, Transverse plane, High Energy Physics::Experiment
Abstract: The forward-jet cross section in deep inelastic ep scattering has been measured using the ZEUS detector at HERA with an integrated luminosity of 6.36 pb^-1. The jet cross section is presented as a function of jet transverse energy squared, E(T,jet)^2, and Q^2 in the kinematic ranges 10^-2, Comment: 8 pages including 3 figures
Published: 1999
Full Text: View/download PDF

17. Measurement of the diffractive cross section in deep inelastic scattering using ZEUS 1994 data

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Schnurbusch, H, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, N, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Capua, M, Iannotti, L, Mastroberardino, A, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Desler, K, Drews, G, Fricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, R, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, P, Wick, K, Garfagnini, A, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, GD, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, E, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Joe, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: MONTE-CARLO GENERATOR, STRUCTURE-FUNCTION F-2(X, EP SCATTERING, Q(2)), LOW-X, HERA, ZEUS, LARGE RAPIDITY GAP, CENTRAL TRACKING DETECTOR, POMERON STRUCTURE, HARD DIFFRACTION, LOW-X, HERA, DISSOCIATION
Abstract: The DIS diffractive cross section, dσdiffγ*p→XN/dMx, has been measured in the mass range Mx < 15 GeV for γ*p c.m. energies 60 < W < 200 GeV and photon virtualities Q2 = 7 to 140 GeV2. For fixed Q2 and Mx, the diffractive cross section rises rapidly with W, dσdiffγ*p→X N (Mx, W, Q2)/dMx ∝ Wadiff with adiff = 0.507 ± 0.034 (stat) +0.155-0.046 (syst) corresponding to a t-averaged pomeron trajectory of ̄αℙ = 1.127 ± 0.009 (stat) +0.039-0.012 (syst) which is larger than ̄αℙ observed in hadron-hadron scattering. The W dependence of the diffractive cross section is found to be the same as that of the total cross section for scattering of virtual photons on protons. The data are consistent with the assumption that the diffractive structure function FD(3)2 factorizes according to cursive greek chiℙFD(3)2(cursive greek chiℙ, β, Q2) = (cursive greek chi0//cursive greek chiℙ)nFD(2)2(β, Q2). They are also consistent with QCD based models which incorporate factorization breaking. The rise of cursive greek chiℙFD(3)2 with decreasing cursive greek chiℙ and the weak dependence of FD(2)2 on Q2 suggest a substantial contribution from partonic interactions.
Published: 1999

18. Measurement of three-jet distributions in photoproduction at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, C, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Schnurbusch, H, Weber, A, Wieber, H, Bailey, DS, Barret, O, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Burgard, C, Desler, K, Drews, G, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kootz, U, Kowalski, H, Lindemann, L, Lohr, B, Martiinez, M, Milewski, J, Milite, M, Monteiro, T, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Viani, ALD, Meyer, A, Monig, K, Schlenstedt, S, Straub, PB, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Cole, JE, Howell, GC, Lamberti, L, Long, KR, Miller, DB, Prinias, A, Sedgbeer, JK, Sideris, D, Tapper, AD, Walker, R, Mallik, T, Wang, SM, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, SH, An, SH, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Labarga, L, del Peso, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Padhi, S, Pinciuc, C, Riveline, M, Stairs, DG, St-Laurent, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Matsushita, T, Noyes, VA, Quadt, A, Ruske, O, Sutton, MR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Pavel, N, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Wing, M, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Menary, S, Schmidke, WB, and Collaboration, ZEUS
Subjects: Nuclear and High Energy Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, law.invention, Nuclear physics, COLLIDER, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, law, 0103 physical sciences, Invariant mass, 010306 general physics, education, Parton shower, Collider, Nuclear Experiment, Physics, education.field_of_study, ZEUS (particle detector), 010308 nuclear & particles physics, 3-JET, High Energy Physics::Phenomenology, RESOLVED PHOTOPRODUCTION, ZEUS, HERA, Phase space, PARTON DISTRIBUTIONS, HADRON-COLLISIONS, MULTIJET EVENTS, High Energy Physics::Experiment
Abstract: The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M_3J > 50 GeV has been measured with the ZEUS detector at HERA. The three-jet angular distributions are inconsistent with a uniform population of the available phase space but are well described by parton shower models and O(alpha alpha_s^2) pQCD calculations. Comparisons with the parton shower model indicate a strong contribution from initial state radiation as well as a sensitivity to the effects of colour coherence., 13 pages including 5 figures
Published: 1998

19. High-E-T inclusive jet cross sections in photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, A, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, T, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Desler, K, Drews, G, Fricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, I, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, JJ, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, P, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Hayes, ME, Jones, TW, Lane, JB, Saunders, ML, Sutton, LR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: LUND MONTE-CARLO, PARTON DISTRIBUTIONS, PHOTON STRUCTURE-FUNCTION, STRUCTURE-FUNCTION F-2(GAMMA), 3-JET EVENTS, ZEUS, LEADING-ORDER QCD, HADRON COLLIDERS, STRUCTURE-FUNCTION F2, 2-JET PRODUCTION
Published: 1998

20. Measurement of elastic Upsilon photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Schnurbusch, H, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Capua, M, Iannotti, L, Mastroberardino, A, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, AM, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Desler, K, Drews, G, Fricke, U, Gialas, I, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Roldan, J, Ryan, JJ, Saull, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Stonjek, S, Surrow, B, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, E, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Hervas, L, Labarga, L, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Keusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamasita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, B, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VR, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: ZEUS BARREL, COLLISIONS, ZEUS, MESON PRODUCTION, J/PSI, DETECTOR, GEV/C, QCD, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Elastic ρ 0 photoproduction has been measured using the ZEUS detector at HERA. Untagged photoproduction events from ep interactions were used to measure the reaction γp→ρ 0 p(ρ 0)→π +π-) at photon-proton centre-of-mass energies between 60 and 80 GeV and |t
Published: 1998

21. Elastic and proton-dissociative rho(0) photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Hall-Wilton, R, Hayes, ME, Heath, GP, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, A, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miiller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: OF-MASS ENERGY, SCATTERING, ZEUS, DOUBLE DIFFRACTION DISSOCIATION, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, CERN SPS COLLIDER, CROSS-SECTIONS, ISR
Published: 1998

22. Measurement of the diffractive structure function F(D(4))(2) at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Hayes, ME, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knettter, J, Harnew, N, Lancaster, M, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Lane, JB, Saunders, RL, Shulman, J, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: DEEP-INELASTIC SCATTERING, ELASTIC-SCATTERING, LUND MONTE-CARLO, ZEUS, CENTRAL TRACKING DETECTOR, LARGE RAPIDITY GAP, POMERON STRUCTURE, CROSS-SECTIONS, DISSOCIATION, CALORIMETER
Published: 1998

23. Search for selectron and squark production in e(+)p collisions at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Giuseppe Levi, Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Kappes, A., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Stamm, J., Wieber, H., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Heath, G. P., Heath, H. F., Mcfall, J. D., Piccioni, D., Roff, D. G., Tapper, R. J., Capua, M., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Przybycień, M. B., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Czermak, A. M., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Desler, K., Drews, G., Fricke, U., Gialas, I., Goebel, F., Göttlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G. F., Hasell, D., Hebbel, K., Johnson, K. F., Kasemann, M., Koch, W., Kötz, U., Kowalski, H., Lindemann, L., Löhr, B., Martínez, M., Miiewski, J., Milite, M., Monteiro, T., Notz, D., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Rohde, M., Roldán, J., Ryan, J. J., Saull, P. R. B., Savin, A. A., Schneekloth, U., Schwarzer, O., Selonke, F., Stonjek, S., Surrow, B., Tassi, E., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Burow, B. D., Coldewey, C., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Raach, H., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Lee, S. W., Macdonald, N., Mccance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Strickland, E., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gladilin, L. K., Kçira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Howell, G., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Walker, R., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Hong, S. J., Lee, S. B., Nam, S. W., Park, S. K., Lim, H., Park, I. H., Son, D., Barreiro, F., Fernández, J. P., García, G., Glassnan, C., Hernández, J. M., Hervás, L., Labarga, L., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Engelen, J., Koffeman, E., Kooijman, P., Sighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Groóße-Knetter, J., Harnew, N., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Oh, B. Y., Okrasiński, J. R., Toothacker, W. S., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Wichmann, R., Williams, D. C., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Arneodo, M., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Fagerstroem, C. -P, Galea, R., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, A., Simmons, D., Butterworth, J. M., Catterall, C. D., Hayes, M. E., Jones, T. W., Lane, J. B., Saunders, R. L., Sutton, M. R., Wing, M., Ciborowski, J., Grzelak, G., Kasprzak, M., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: Nuclear and High Energy Physics, Stop squark, Particle physics, MONTE-CARLO GENERATOR, FOS: Physical sciences, ENERGY EP COLLISIONS, 01 natural sciences, JET FRAGMENTATION, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), E(+)E(-) COLLISIONS, EVENT GENERATOR, 0103 physical sciences, SUPERGRAVITY, 010306 general physics, SUPERSYMMETRY, Physics, E+E-PHYSICS, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, ZEUS, PARTON DISTRIBUTIONS, MODEL, Superpartner, HERA, Supersymmetry, Selectron tube, Neutralino, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: We have searched for the production of a selectron and a squark in $e^+p$ collisions at a center-of-mass energy of 300 GeV using the ZEUS detector at HERA. The selectron and squark are sought in the direct decay into the lightest neutralino in the framework of supersymmetric extensions to the Standard Model which conserve R-parity. No evidence for the production of supersymmetric particles has been found in a data sample corresponding to 46.6~pb$^{-1}$ of integrated luminosity. We express upper limits on the product of the cross section times the decay branching ratios as excluded regions in the parameter space of the Minimal Supersymmetric Standard Model., 22 pages including 4 figures
Published: 1998

24. Measurement of inelastic J/psi photoproduction at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G. C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Pasquale, S. D., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Ricci, F., Sartorelli, G., Garcia, Y. Z., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. P., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Rembser, C., Stamm, J., Wedemeyer, R., Wieber, H., Bailey, D. S., Campbell Robson, S., Cottingham, W. N., Foster, B., Hall Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Ameodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycien, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Jelen, K., Kisielewska, D., Kowalski, T., Przybycien, M., Rulikowska Zarebska, E., Suszycki, L., Zajac, J., Dulinski, Z., Kotanski, A., Abbiendi, G., L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Gottlicher, P., Grosse Knetter, J., Haas, T., Hain, W., Hasell, D., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Lohr, B., Lowe, M., Manczak, O., Milewski, J., Monteiro, T., J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldan, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Selonke, F., Surrow, B., Tassi, E., Voss, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wolfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyer Larsen, A., Salehi, H., Wick, K., Gladilin, L. K., Horstmann, D., Kcira, D., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., T. C. B., Cole, J. E., Harris, V. L., Howell, G., B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., J. T., Wu, Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Nakao, M., Tokushuku, K., Yamada, S., Yamazaki, Y., S. H., An, Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Garcia, G., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, L., Martinez, M., Peso, J. d., Puga, J., Terron, J., J. F., De, Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brummer, N., Chlebana, F., Engelen, J., Kooijman, P., Sighem, A. v., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E. d., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper Sarkar, A. M., R. C. E., Edmonds, J. K., Harnew, N., Lancaster, M., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Corso, F. D., Giorgi, M. D., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Zuin, F., Bulmahn, J., Feild, R. G., B. Y., Oh, Okrasinski, J. R., Whitmore, J. J., Iga, Y., D'Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., H. F. W., Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Suzuki, I., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, Roberto, Costa, Marco, Ferrero, M. I., Maselli, S., Monaco, Vincenzo, Peroni, Cristiana, Petrucci, M. C., Sacchi, Roberto, Solano, Ada Maria, Stiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. P., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., L. W., Mo, Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: GLUON DISTRIBUTION, Particle physics, STRUCTURE-FUNCTION F-2(X, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, FOS: Physical sciences, PROTON, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, QCD ANALYSIS, Nuclear Experiment, 010306 general physics, Physics, ZEUS (particle detector), CONSTRUCTION, Q(2)), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS, ZEUS BARREL CALORIMETER, HERA, J-PSI, CENTRAL TRACKING DETECTOR, PARTON DISTRIBUTIONS, High Energy Physics::Experiment
Abstract: We present a measurement of the inelastic, non diffractive J/$\psi$ photoproduction cross section in the reaction $e^{+} p \to e^{+} {J}/\psi X$ with the ZEUS detector at HERA. The J/$\psi$ was identified using both the $\mu^{+}\mu^{-}$ and $e^{+}e^{-}$ decay channels and events were selected within the range $0.4 1$ GeV$^2$, NLO calculations of the photon-gluon fusion process based on the colour-singlet model are in good agreement with the data. The predictions of a specific leading order colour-octet model, as formulated to describe the CDF data on J/$\psi$ hadroproduction, are not consistent with the data., Comment: 31 pages including 7 figures
Published: 1997

25. Measurement of the proton structure function F-2 and sigma(gamma*p)(tot) at low Q(2) and very low x at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G. C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Depasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Ricci, F., Sartorelli, G., Garcia, Y. Z., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. P., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Rembser, C., Stamm, J., Wedemeyer, R., Wieber, H., Bailey, D. S., Campbellrobson, S., Cottingham, W. N., Foster, B., Hallwilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycien, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Przybycien, M., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Dulinski, Z., Kotanski, A., Abbiendi, G., L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Gottlicher, P., Grosseknetter, J., Haas, T., Hain, W., Hasell, D., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Lohr, B., Lowe, M., Manczak, O., Milewski, J., Monteiro, T., J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldan, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Selonke, F., Surrow, B., Tassi, E., Voss, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wolfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyerlarsen, A., Salehi, H., Wick, K., Gladilin, L. K., Horstmann, D., Kcira, D., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Harris, V. L., Howell, G., B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., J. T., Wu, Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Nakao, M., Tokushuku, K., Yamada, S., Yamazaki, Y., S. H., An, Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Garcia, G., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, L., Martinez, M., Delpeso, J., Puga, J., Terron, J., Detroconiz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., Stlaurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brummer, N., Chlebana, F., Engelen, J., Kooijman, P., Vansighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Dewolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmere, R. J., Coopersarkar, A. M., R. C. E., Edmonds, J. K., Harnew, N., Lancaster, M., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Feild, R. G., B. Y., Oh, Okrasinski, J. R., Whitmore, J. J., Iga, Y., Dagostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., H. F. W., Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Doeker, T., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Suzuki, I., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, Roberto, Costa, Marco, Ferrero, M. I., Maselli, S., Monaco, Vincenzo, Peroni, Cristiana, Petrucci, M. C., Sacchi, Roberto, Solano, Ada Maria, Staiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. P., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., L. W., Mo, Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, J. A., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: ZEUS, STRUCTURE-FUNCTION F2, OF-MASS ENERGY, PARTON DISTRIBUTIONS, CROSS-SECTIONS, EP SCATTERING, MONTE-CARLO
Published: 1997

26. Study of photon dissociation in diffractive photoproduction at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Pasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Ecken, M., Feld, L., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Paul, E., Pfeiffer, M., Rembser, Ch, Stamm, J., Wedemeyer, R., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycień, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelén, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarȩbska, E., Suszycki, L., Zaja̧c, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Göttlicher, P., Große-Kneller, J., Haas, T., Hain, W., Hasell, D., Heßling, H., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Löhr, B., Löwe, M., Mainusch, J., Mańczak, O., Milewski, J., Monteiro, T., Ng, J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldán, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Schulz, W., Selonke, F., Surrow, B., Tassi, E., Voß, T., Weslphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Gladilin, L. K., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Harris, V. L., Howell, G., Hung, B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Nakao, M., Tokushuku, K., Yamada, S., Yamazaki, Y., An, S. H., Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Graciani, R., Hernández, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terron, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Yu A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Yu, Proskuryakov, A. S., Shcheglova, L. M., Shumilin, A. V., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Chlebana, F., Engelen, J., Kooijman, P., Kruse, A., Sighem, A., Tiecke, H., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Harnew, N., Mark Lancaster, Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Yip, T., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Feild, R. G., Oh, B. Y., Okrasiński, J. R., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Barberis, E., Dubbs, T., Heusch, C., Hook, M., Lockman, W., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Doeker, T., Kananov, S., Levy, A., Abe, T., Inuzuka, M., Nagano, K., Suzuki, I., Umemori, K., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. -P, Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., Mo, L. W., Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., Schmidke, W. B., and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, FOS: Physical sciences, 01 natural sciences, Dissociation (chemistry), High Energy Physics - Experiment, Pomeron, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, DISTRIBUTIONS, 010306 general physics, Nuclear Experiment, Physics, ZEUS (particle detector), hep-ex, 010308 nuclear & particles physics, OF-MASS ENERGY, High Energy Physics::Phenomenology, ZEUS, ZEUS BARREL CALORIMETER, HERA, Nuclear & Particles Physics, Amplitude, HADRONIC PROCESSES, CROSS-SECTION, Mass spectrum, High Energy Physics::Experiment
Abstract: Diffractive dissociation of quasi-real photons at a photon-proton centre of mass energy of W ~ 200 GeV is studied with the ZEUS detector at HERA. The process under consideration is gamma p -> X N, where X is the diffractively dissociated photon system of mass M_X and N is either a proton or a nucleonic system with mass M_N < 2GeV. The cross section for this process in the interval 3 < M_X < 24 GeV relative to the total photoproduction cross section was measured to be sigma^partial_D / sigma_tot = 6.2 +- 0.2(stat) +- 1.4(syst)%. After extrapolating this result to the mass interval of m_phi^2 < M_X^2 < 0.05 W^2 and correcting it for proton dissociation, the fraction of the total cross section attributed to single diffractive photon dissociation, gamma p -> X p, is found to be sigma_SD / sigma_tot = 13.3 +- 0.5(stat) +- 3.6(syst)%. The mass spectrum of the dissociated photon system in the interval 8 < M_X < 24 GeV can be described by the triple pomeron (PPP) diagram with an effective pomeron intercept of alpha_P(0) = 1.12 +- 0.04(stat) +- 0.08(syst). The cross section for photon dissociation in the range 3 < M_X < 8 GeV is significantly higher than that expected from the triple pomeron amplitude describing the region 8 < M_X < 24 GeV. Assuming that this discrepancy is due to a pomeron-pomeron-reggeon (PPR) term, its contribution to the diffractive cross section in the interval 3 < M_X < 24 GeV is estimated to be f_PPR = 26 +- 3(stat) +- 12(syst)%., 29 pages including 9 figures
Published: 1997

27. Comparison of ZEUS data with standard model predictions for e(+)p->e(+)X scattering at high x and Q(2)

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G. C., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Depasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Garcia, Y. Z., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coboken, K., Crittenden, J., Deffner, R., Eckert, M., Feld, L., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. P., Katz, U. F., Paul, E., Pfeiffer, M., Rembser, C., Stamm, J., Wedemeyer, R., Bailey, D. S., Campbellrobson, S., Cottingham, W. N., Foster, B., Hallwilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jakubowski, Z., Przybycien, M. B., Zachara, M., Zawiejski, L., Adamczyk, L., Bednarek, B., Jelen, K., Kisielewska, D., Kowalski, T., Przybycieo, M., Rulikowskazarebska, E., Suszycki, L., Zajac, J., Dulinski, Z., Kotanski, A., Abbiendi, G., L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Gilkinson, D. J., Glasman, C., Gottlicher, P., Grosseknetter, J., Haas, T., Hain, W., Hasell, D., Hessling, H., Iga, Y., Johnson, K. F., Kasemann, M., Koch, W., Kotz, U., Kowalski, H., Labs, J., Lindemann, L., Lohr, B., Lowe, M., Mainusch, J., Manczak, O., Milewski, J., Monteiro, T., J. S. T., Notz, D., Ohrenberg, K., Park, J. H., Pellegrino, A., Pelucchi, F., Piotrkowski, K., Roco, M., Rohde, M., Roldan, J., Savin, A. A., Schneekloth, U., Schulz, W., Selonke, F., Surrow, B., Tassi, E., Voss, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wolfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Saxon, D. H., Sinclair, L. E., Strickland, E., Utley, M. L., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyerlarsen, A., Salehi, H., Wick, K., Gladilin, L. K., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Harris, V. L., Howell, G., B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Whitfield, A. F., Mallik, U., Wang, S. M., J. T., Wu, Cloth, P., Filges, D., S. H., An, Lee, S. B., Nam, S. W., Park, H. S., Park, S. K., Barreiro, F., Fernandez, J. P., Graciani, R., Hernandez, J. M., Hervas, L., Labarga, L., Martinez, M., Delpeso, J., Puga, J., Terron, J., Detroconiz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Lim, J. N., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., Stlaurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Kobrin, V. D., Korzhavina, L. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotov, N. P., Bokel, C., Botje, M., Brummer, N., Chlebana, F., Engelen, J., Dekamps, M., Kooijman, P., Kruse, A., Vansighem, A., Tiecke, H., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Dewolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. H., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Coopersarkar, A. M., R. C. E., Edmonds, J. K., Harnew, N., Lancaster, M., Mcfall, J. D., Nath, C., Noyes, V. A., Quadt, A., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Yip, T., Bertolin, A., Brugnera, R., Carlin, R., Dalcorso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Feild, R. G., B. Y., Oh, Okrasinski, J. R., Whitmore, J. J., Marini, G., Nigro, A., Hart, J. C., Mccubbin, N. A., Shah, T. P., Barberis, E., Dubbs, T., Heusch, C., Vanhook, M., Lockman, W., Rahn, J. T., H. F. W., Seiden, A., Williams, D. C., Schwarzer, O., Walenta, A. H., Abramowicz, H., Briskin, G., Dagan, S., Doeker, T., Kananov, S., Levy, A., Abe, T., Fleck, J. I., Inuzuka, M., Ishii, T., Kuze, M., Nagano, K., Nakao, M., Suzuki, I., Tokushuku, K., Umemori, K., Yamada, S., Yamazaki, Y., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Yamauchi, K., Cirio, Roberto, Costa, Marco, Ferrero, M. I., Maselli, S., Monaco, Vincenzo, Peroni, Cristiana, Petrucci, M. C., Sacchi, Roberto, Solano, Ada Maria, Staiano, A., Dardo, M., Bailey, D. C., Brkic, M., Fagerstroem, C. P., Hartner, G. F., Joe, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sampson, C. R., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Kaziewicz, P. B., Lane, J. B., Saunders, R. L., Shulman, J., Sutton, M. R., Lu, B., L. W., Mo, Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wroblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Revel, D., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: HIGH STATISTICS MEASUREMENT, DEUTERON STRUCTURE FUNCTIONS, INELASTIC MUON SCATTERING, ZEUS, CENTRAL TRACKING DETECTOR, ENERGY EP COLLISIONS, PARTON DISTRIBUTIONS, CROSS-SECTIONS, BARREL CALORIMETER, HIGH Q2, PROTON
Published: 1997

28. A search for excited fermions in $e+p$ collisions at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, Rl, Yoshida, R, Zhang, H, Mattingly, Mck, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, Hp, Katz, Uf, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, Ds, Campbell Robson, S, Cottingham, Wn, Foster, B, Hall Wilton, R, Hayes, Me, Heath, Gp, Heath, Hf, Piccioni, D, Roff, Dg, Tapper, Rj, Arneodo, M, Ayad, R, Capua, M, Garfagnini, Alberto, Iannotti, L, Schioppa, M, Susinno, G, Kim, Jy, Lee, Jh, Lim, It, Pac, My, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, Ja, Ritz, S, Sampson, S, Sciulli, F, Straub, Pb, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, Mb, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, Lat, Behrens, U, Beier, H, Bienlein, Jk, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, Dj, Glasman, C, Gottlicher, P, Grosse Knetter, J, Haas, T, Hain, W, Hasell, D, Johnson, Kf, Kasemann, E, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewsci, J, Monteiro, T, Jst, Ng, Notz, D, Ohrenberg, K, Parks, Ih, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, Jj, Savin, Aa, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, Af, Zeuner, W, Burow, Bd, Grabosch, Hj, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bohnet, I, Brook, Nh, Bussey, Pj, Doyle, At, Saxon, Dh, Sinclair, Le, Strickland, E, Utley, Ml, Waugh, R, Wilson, As, Gendner, N, Holm, U, Meyer Larsen, A, Salehi, H, Wick, K, Gladilin, K, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, Tc, Butterworth, I, Cole, Je, Harris, Vl, Howell, G, Hung, Bhy, Lamberti, L, Long, Kr, Miller, Db, Pavel, N, Prinias, A, Sedgbeer, Jk, Sideris, D, Whitfield, Af, Mallik, U, Wang, Sm, Wu, Jt, Cloth, P, Filges, D, Fleck, Ji, Ishii, T, Kuze, M, Nakao, M, Tokushuku, K, Yamada, S, Yamazaki, Y, An, Sh, Lee, Sb, Nam, Sw, Park, Hs, Park, Sk, Barreiro, F, Fernandez, Jp, Garcia, G, Graciani, R, Hernandez, Jm, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz JF, Corriveau, F, Hanna, Ds, Hartmann, J, Hung, Lw, Lim, Jn, Murray, Wn, Ochs, A, Riveline, M, Stairs, Dg, St Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Stifutkin, A, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Shumilin, Av, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Kooijman, P, Kruse, A, van Sighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Romanowski, Ta, Blaikley, He, Cashmore, Rj, Cooper Sarkar AM, Devenish, Rce, Edmonds, Jk, Harnew, N, Lancaster, M, Mcfall, Jd, Nath, C, Noyes, Va, Quadt, A, Ruske, O, Tickner, Jr, Uijterwaal, H, Walczak, R, Waters, Ds, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Bulmahn, J, Feild, Rg, Oh, By, Okrasinski, Jr, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Rahn, Jt, Sadrozinski, Hfw, Seiden, A, Williams, Dc, Schwarzer, O, Walenta, Ah, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Suzuki, I, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Petrucci, Mc, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Brkic, M, Fagerstroem, Cp, Hartner, Gf, Joo, Kk, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sampson, Cr, Simmons, D, Teuscher, Rj, Butterworth, Jm, Catterall, Cd, Jones, Tw, Kaziewicz, Pb, Lane, Jb, Saunders, Rl, Shulman, J, Sutton, Mr, Lu, B, Mo, Lw, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Pawlak, R, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Badgett, Wf, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, Rj, Mattingly, S, Reeder, D, Smith, Wh, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, Wr, Khakzad, M, Schmidke, Wb, and Zeus (IHEF, IoP, FNWI)
Subjects: Quark, Particle physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, LEPTON PRODUCTION, P(P)OVER-BAR COLLISIONS, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, EVENTS, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, DESIGN, 0103 physical sciences, 010306 general physics, Nuclear Experiment, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, CONSTRUCTION, ELECTRON, COLLIDERS, Physics, ZEUS (particle detector), 010308 nuclear & particles physics, Branching fraction, Electroweak interaction, High Energy Physics::Phenomenology, Fermion, HERA, Excited state, High Energy Physics::Experiment, Neutrino
Abstract: Using the ZEUS detector at HERA, we have searched for heavy excited states of electrons, neutrinos, and quarks in $e^+p$ collisions at a center-of-mass energy of 300~GeV. With an integrated luminosity of 9.4~pb$^{-1}$, no evidence was found for electroweak production and decay of such states. Limits on the production cross section times branching ratio and on the characteristic couplings, $f/\Lambda$, are derived for masses up to 250~GeV. For the particular choice $f/\Lambda = 1/M_{f^*}$, we exclude at the 95% confidence level excited electrons with mass between 30 and 200~GeV, excited electron neutrinos with mass between 40 and 96~GeV, and quarks excited electroweakly with mass between 40 and 169~GeV., Comment: 39 pages including 11 figures
Published: 1997
Full Text: View/download PDF

29. Measurement of elastic J/psi photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, DePasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Feld, L, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Bailey, DS, CampbellRobson, S, Cottingham, WN, Foster, B, HallWilton, R, Hayes, ME, Heath, GP, Heath, HF, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Jakubowski, Z, Przybycien, MB, Zachara, M, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, RulikowskaZarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, GrossKnetter, J, Haas, T, Hain, W, Hasell, D, Hessling, H, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Mainusch, J, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schulz, W, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burrow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyel, AT, Saxon, DH, Sinclair, LE, Strickland, E, Utley, ML, Waugh, R, Wilson, AS, Bohnet, I, Gendner, N, Holm, U, MeyerLarsen, A, Salehi, H, Wick, K, Gladilin, LK, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Harris, VL, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Whitfield, AF, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Nakao, M, Tokushuku, K, Yamada, S, Yamazaki, Y, An, SH, Lee, SB, Nam, SW, Park, HS, Park, SK, Barreiro, F, Fernandez, JP, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, delPeso, J, Puga, J, Terron, J, deTroconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Lim, JN, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, StLaurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Shumilin, AV, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Kooijman, P, Kruse, A, vanSighem, A, Tiecke, H, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, deWolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, CooperSarkar, AM, Devenish, RCE, Edmonds, JK, Harnew, N, Lancaster, M, McFall, JD, Nath, C, Noyes, VA, Quadt, A, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Yip, T, Bertolin, A, Brugnera, R, Carlin, R, DalCorso, F, DeGiorgi, M, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Zuin, F, Bulmahn, J, Feild, RG, Oh, BY, Okrasinski, JR, Whitmore, JJ, Iga, Y, DAgostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Dubbs, T, Heusch, C, VanHook, M, Lockman, W, Rahn, JT, Sadrozinski, HFW, Seiden, A, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Doeker, T, Kananov, S, Levy, A, Abe, T, Inuzuka, M, Nagano, K, Suzuki, I, Umemori, K, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Yamauchi, K, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Brkic, M, Fagerstroem, CP, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sampson, CR, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Kaziewicz, PB, Lane, JB, Saunders, RL, Shulman, J, Sutton, MR, Lu, B, Mo, LW, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Revel, D, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Bhadra, S, Frisken, WR, Khakzad, M, and Schmidke, WB
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, LUND MONTE-CARLO, PROTON, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, ENERGY, Nuclear physics, 0103 physical sciences, SCATTERING, Nuclear Experiment, 010306 general physics, Physics, Muon, ZEUS (particle detector), 010308 nuclear & particles physics, Scattering, Sigma, ZEUS, ZEUS BARREL CALORIMETER, HERA, CENTRAL TRACKING DETECTOR, CROSS-SECTION, J/PSI, Helicity, Vertex (curve), High Energy Physics::Experiment
Abstract: The reaction gamma p -> J/Psi p has been studied in ep interactions using the ZEUS detector at HERA. The cross section for elastic J/Psi photoproduction has been measured as a function of the photon-proton centre of mass energy W in the range 40 < W < 140 GeV at a median photon virtuality Q^2 of 5*10^{-5} GeV^2. The photoproduction cross section, sigma_{gamma p -> J/Psi p}, is observed to rise steeply with W. A fit to the data presented in this paper to determine the parameter $\delta$ in the form sigma_{gamma p -> J/Psi p} \propto W^{\delta} yields the value \delta = 0.92 \pm 0.14 \pm 0.10. The differential cross section dsigma/d|t| is presented over the range |t| < 1.0 GeV^2 where t is the square of the four-momentum exchanged at the proton vertex. d\sigma/d|t| falls exponentially with a slope parameter of 4.6 \pm 0.4 (+0.4-0.6) GeV^{-2}. The measured decay angular distributions are consistent with s-channel helicity conservation., Comment: Replacement has an updated author list. 32 pages, 5 figures, Latex, Submitted to Z. Phys. C
Published: 1997

30. Charged particles and neutral kaons in photoproduced jets at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., Pasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Ricci, F., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Rembser, C., Stamm, J., Wedemeyer, R., Wieber, H., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., Mcfall, J. D., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Figiel, J., Klimek, K., Przybycień, M. B., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Czermak, A., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Dulinński, Z., Kotanński, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Cases, G., Deppe, O., Desler, K., Drews, G., Fricke, U., Gilkinson, D. J., Glasman, C., Göttlicher, P., Haas, T., Hain, W., Hasell, D., Johnson, K. F., Kasemann, M., Koch, W., Kötz, U., Kowalski, H., Labs, J., Lindemann, L., Löhr, B., Löwe, M., Mańczak, O., Milewski, J., Monteiro, T., Ng, J. S. T., Notz, D., Ohrenberg, K., Park, I. H., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Roco, M., Rohde, M., Roldan, J., Ryan, J. J., Savin, A. A., Schneekloth, U., Schwarzer, O., Selonke, F., Surrow, B., Tassi, E., Voß, T., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zarnecki, A. F., Zeuner, W., Burow, B. D., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, G., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Macdonald, N., Saxon, D. H., Sinclair, L. E., Strickland, E., Waugh, R., Wilson, A. S., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Gladilin, L. K., Horstmann, D., Kçira, D., Klanner, R., Lohrmann, E., Poelz, G., Schott, W., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Howell, G., Hung, B. H. Y., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Walker, R., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Hong, S. J., Lee, S. B., Nam, S. W., Park, S. K., Barreiro, F., Fernandez, J. P., Garcia, G., Graciani, R., Hernandez, J. M., Hervás, L., Labarga, L., Martinez, M., Del Peso, J., Puga, J., Terrán, J., Troconiz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Hung, L. W., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Ullmann, R., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, G. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Anatoly Solomin, Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Chlebana, F., Engelen, J., Koffeman, E., Kooijman, P., Sighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Vreeswijk, M., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Große-Knetter, J., Harnew, N., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Uijterwaal, H., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Bulmahn, J., Oh, B. Y., Okrasiński, J. R., Toothacker, W. S., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Wichmann, R., Williams, D. C., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Fagerstroem, C. -P, Galea, R., Hartner, G. F., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, A., Simmons, D., Teuscher, R. J., Butterworth, J. M., Catterall, C. D., Jones, T. W., Lane, J. B., Saunders, R. L., Sutton, M. R., Wing, M., Ciborowski, J., Grzelak, G., Kasprzak, M., Muchorowski, K., Nowak, R. J., Pawlak, J. M., Pawlak, R., Tymieniecka, T., Wrońblewski, A. K., Zakrzewski, J. A., Adamus, M., Coldewey, C., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: DEEP-INELASTIC-SCATTERING, E+E ANNIHILATION, Astrophysics::High Energy Astrophysical Phenomena, MESON PRODUCTION, ZEUS, CENTRAL TRACKING DETECTOR, CROSS-SECTIONS, GAMMA-P INTERACTIONS, TO-LEADING ORDER, PARTON DISTRIBUTIONS, MONTE-CARLO, HARD SCATTERING, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Charged particles (h±) and K0 mesons have been studied in photoproduced events containing at least one jet of ET > 8 GeV n a pseudorapidity interval (-0.5, 0.5) in the ZEUS laboratory frame. Distributions are presented in terms of transverse momentum, pseudorapidity and distance of the particle from the axis of a jet. The properties of h± within the jet are described well using the standard settings of PYTHIA, but the use of the multiparton interaction option improves the description outside the jets.

31. Measurement of high-Q2 neutral-current e+p deep inelastic scattering cross-sections at HERA

Author: Breitweg, J, Chekanov, S, Derrick, R, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, M C K, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, G C, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Y Z, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, H P, Kappes, A, Katz, U F, Kerger, R, Paul, E, Pfeiffer, R, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, D S, Barret, O, Cottingham, W N, Foster, B, Heath, G P, Heath, H F, McFall, J D, Piccioni, D, Scott, J, Tapper, R J, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, H Y, Kim, J Y, Lee, J H, Lim, I T, Ma, K J, Pac, M Y, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, J A, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, M B, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, A M, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, L A T, Behrens, U, Bienlein, J K, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, G F, Hasell, D, Hebbel, K, Johnson, K F, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Piotrzkowski, K, Rohde, M, Saull, P R B, Savin, A A, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, B D, Coldewey, C, Grabosch, H J, Viani, A L D, Meyer, A, Monig, K, Schlenstedt, S, Straub, P B, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, N H, Bussey, P J, Doyle, A T, Lee, S W, Macdonald, N, McCance, G J, Saxon, D H, Sinclair, L E, Skillicorn, I O, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, L K, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, T C, Cole, J E, Howell, G, Lamberti, L, Long, K R, Miller, D B, Prinias, A, Sedgbeer, J K, Sideris, D, Tapper, A D, Walker, R, Mallik, U, Wang, S M, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, S H, An, S H, Hong, S J, Lee, S B, Nam, S W, Park, S K, Lim, H, Park, I H, Son, D, Barreiro, F, Fernandez, J P, Garcia, G, Glasman, C, Hernandez, J M, Labarga, L, del Peso, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, D S, Hartmann, J, Murray, W N, Ochs, A, Padhi, S, Riveline, M, Stairs, D G, St-Laurent, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, B A, Bashindzhagyan, G L, Ermolov, P F, Golubkov, Y A, Khein, L A, Korotkova, N A, Korzhavina, I A, Kuzmin, V A, Lukina, O Y, Proskuryakov, A S, Shcheglova, L M, Solomin, A N, Zotkin, S A, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, J J, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, L S, Gilmore, J, Ginsburg, C M, Kim, C L, Ling, T Y, Nylander, P, Blaikley, H E, Boogert, S, Cashmore, R J, Cooper-Sarkar, A M, Devenish, R C E, Edmonds, J K, Grosse-Knetter, J, Harnew, N, Matsushita, T, Noyes, V A, Quadt, A, Ruske, O, Sutton, M R, Walczak, R, Waters, D S, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, V, Iannotti, L, Oh, B Y, Okrasinski, J R, Toothacker, W S, Whitmore, J J, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, J C, McCubbin, N A, Shah, T P, Epperson, D, Heusch, C, Sadrozinski, H F W, Seiden, A, Wichmann, R, Williams, D C, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Schechter, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, M I, Maselli, S, Monaco, V, Peroni, C, Petrucci, M C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, D C, Fagerstroem, C P, Galea, R, Koop, T, Levman, G M, Martin, J F, Orr, R S, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, J M, Catterall, C D, Hayes, M E, Heaphy, E A, Jones, T W, Lane, J B, Ciborowski, J, Grzelak, G, Nowak, R J, Pawlak, J M, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, A K, Zakrzewski, J A, Zarnecki, A F, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, W F, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, D D, Smith, W H, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, V W, Bhadra, S, Frisken, W R, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, W B, and ZEUS Collaboration
Subjects: Research Groups and Centres\Physics\Low Temperature Physics, HIGH STATISTICS MEASUREMENT, MONTE-CARLO GENERATOR, Faculty of Science\Physics, LEADING ORDER, MUON SCATTERING, ZEUS, ZEUS BARREL CALORIMETER, LARGE RAPIDITY GAP, CENTRAL TRACKING DETECTOR, GLOBAL ANALYSIS, DEUTERON STRUCTURE FUNCTIONS, PARTON DISTRIBUTIONS, High Energy Physics::Experiment
Abstract: The e(+)p neutral-current deep inelastic scattering differential cross-sections d sigma/dQ(2), for Q(2) > 400 GeV2, d sigma/dx and d sigma/dy, for Q(2) > 400, 2500 and 10000 GeV2, have been measured with the ZEUS detector at HERA. The data sample of 47.7 pb(-1) was collected at a center-of-mass energy of 300 GeV. The cross-section, d sigma/dQ(2), falls by six orders of magnitude between Q(2) = 400 and 40000 GeV2. The predictions of the Standard Model are in very good agreement with the data. Complementing the observations of time-like Z(0) contributions to fermion-antifermion annihilation! the data provide direct evidence for the presence of Z(0) exchange in the space-like region explored by deep inelastic scattering.

32. Search for resonances decaying to e+-jet in e+p interactions at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, K, Heinloth, K, Hilger, E, Irrgang, P, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, KC, Weber, A, Wieber, H, Bailey, DS, Barret, O, Brook, NH, Foster, B, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Rodrigues, E, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Liu, W, Liu, X, Mellado, B, Paganis, S, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Piotrzkowski, K, Przybycien, MB, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Szuba, D, Kotanski, A, Bauerdick, LAT, Behrens, U, Bienlein, JK, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, MC, Rohde, M, Saull, PRB, Savin, AA, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Grabosch, HJ, Viani, ALD, Meyer, A, Schlenstedt, S, Straub, PB, Barbagli, C, Gallo, E, Pelfer, P, Maccarrone, C, Votano, L, Bamberger, A, Benen, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Dannheim, D, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, KR, Miller, DB, Tapper, AD, Walker, R, Mallik, U, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, SH, Lee, SB, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, del Peso, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, DS, Ochs, A, Padhi, S, Riveline, M, Stairs, DG, Wing, M, Tsurugai, T, Bashkirov, V, Dologshein, BA, Dementiev, RK, Ermolov, PF, Golubkov, YA, Katkov, II, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Vlasov, NN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Grijpink, S, Koffeman, E, Kooijman, P, Schagen, S, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, JJ, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Boogert, S, Cooper-Sarkar, AM, Devenish, RCE, Grosse-Knetter, J, Matsushita, T, Ruske, O, Sutton, MR, Walczak, R, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, LL, Stroili, R, Voci, C, Iannotti, L, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JE, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, West, BJ, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, K, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Catterall, C, Cole, JE, Frisken, WR, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, WB, Collaboration, ZEUS, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, MONTE-CARLO GENERATOR, Physics and Astronomy (miscellaneous), P(P)OVER-BAR COLLISIONS, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Standard Model, Nuclear physics, PHYSICS, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, SCATTERING, Invariant mass, Leptoquark, LEPTOQUARK PAIR PRODUCTION, 010306 general physics, Engineering (miscellaneous), QC, Physics, Luminosity (scattering theory), Neutral current, 010308 nuclear & particles physics, Branching fraction, ZEUS, HERA, LEP, MODEL, Mass spectrum, High Energy Physics::Experiment, HADRON-COLLISIONS
Abstract: The $e^+$ -jet invariant mass spectrum produced in the reaction $e^+ p \rightarrow e^+ X$ has been studied at a center-of-mass energy of 300 GeV. The data were collected using the ZEUS detector operating at the HERA collider, and correspond to an integrated luminosity of $47.7$ pb $^{-1}$ . The observed mass spectrum is in good agreement with Standard Model expectations up to an $e^+$ -jet mass of $210$ GeV. Above this mass, some excess is seen. The angular distribution of these events is typical of high- $Q^2$ neutral current events and does not give convincing evidence for the presence of a narrow scalar or vector state. Limits are presented on the product of cross section and branching ratio for such a state and are interpreted as limits on leptoquark or R-parity-violating squark production. Specific leptoquark types are ruled out at 95% confidence level for coupling strength $\lambda=0.3$ for masses between 150 and 280 GeV.

33. Measurement of jet shapes in photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Hayes, ME, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, H, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, ER, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, H, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JH, Catterall, CD, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, H, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, H, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: COLLISIONS, LUND MONTE-CARLO, Astrophysics::High Energy Astrophysical Phenomena, ZEUS, ZEUS BARREL CALORIMETER, CENTRAL TRACKING DETECTOR, CROSS-SECTIONS, PARTON DISTRIBUTIONS, 3-JET EVENTS, HADRON COLLIDERS, High Energy Physics::Experiment, HARD SCATTERING, Nuclear Experiment
Abstract: The shape of jets produced in quasi-real photon-proton collisions at centre-of-mass energies in the range 134-277 GeV has been measured using the hadronic energy flow. The measurement was done with the ZEUS detector at HERA. Jets are identified using a cone algorithm in the η - φ plane with a cone radius of one unit. Measured jet shapes both in inclusive jet and dijet production with transverse energies EjetT > 14 GeV are presented. The jet shape broadens as the jet pseudorapidity (ηjet) increases and narrows as EjetT increases. In dijet photoproduction, the jet shapes have been measured separately for samples dominated by resolved and by direct processes. Leading-logarithm parton-shower Monte Carlo calculations of resolved and direct processes describe well the measured jet shapes except for the inclusive production of jets with high ηjet and low EjetT. The observed broadening of the jet shape as ηjet increases is consistent with the predicted increase in the fraction of final state gluon jets.

34. Event shape analysis of deep inelastic scattering events with a large rapidity gap at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Hayes, ME, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DG, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, G, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Schwarzer, O, Walenta, AH, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Lane, SB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, Collaboration, ZEUS, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, Hadron, FOS: Physical sciences, ZEUS, ELECTRON-POSITRON-ANNIHILATION, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, DIFFRACTIVE SCATTERING, GLUON BREMSSTRAHLUNG, JET FRAGMENTATION, POMERON STRUCTURE, HADRON PRODUCTION, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Rapidity, 010306 general physics, Physics, Neutral current, 010308 nuclear & particles physics, HERA, Rest frame, Deep inelastic scattering, Gluon, High Energy Physics::Experiment
Abstract: A global event shape analysis of the multihadronic final states observed in neutral current deep inelastic scattering events with a large rapidity gap with respect to the proton direction is presented. The analysis is performed in the range $5 \leq Q^2 \leq 185\gev^2$ and $160 \leq W \leq 250\gev$, where $Q^2$ is the virtuality of the photon and $W$ is the virtual-photon proton centre of mass energy. Particular emphasis is placed on the dependence of the shape variables, measured in the $\gamma^*-$pomeron rest frame, on the mass of the hadronic final state, $M_X$. With increasing $M_X$ the multihadronic final state becomes more collimated and planar. The experimental results are compared with several models which attempt to describe diffractive events. The broadening effects exhibited by the data require in these models a significant gluon component of the pomeron., Comment: 23 pages including 4 figures

35. Measurement of the t distribution in diffractive photoproduction at HERA

Author: Breitweg, J, Derrick, M, Krakauer, D, Magill, S, Mikunas, D, Musgrave, B, Repond, J, Stanek, R, Talaga, RL, Yoshida, R, Zhang, H, Mattingly, MCK, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Chiarini, M, Cifarelli, L, Cindolo, F, Contin, A, Corradi, M, De Pasquale, S, Gialas, I, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Nemoz, C, Palmonari, F, Pesci, A, Polini, A, Ricci, F, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Grothe, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rembser, C, Stamm, J, Wedemeyer, R, Wieber, H, Bailey, DS, Campbell-Robson, S, Cottingham, WN, Foster, B, Hall-Wilton, R, Hayes, ME, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Roff, DC, Tapper, RJ, Arneodo, M, Ayad, R, Capua, M, Garfagnini, A, Iannotti, L, Schioppa, M, Susinno, G, Kim, JY, Lee, JH, Lim, IT, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sampson, S, Sciulli, F, Straub, PB, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Bukowy, M, Czermak, A, Jelen, K, Kisielewska, D, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Abbiendi, G, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Cases, G, Deppe, O, Desler, K, Drews, G, Fricke, U, Gilkinson, DJ, Glasman, C, Gottlicher, P, Haas, T, Hain, W, Hasell, D, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Labs, J, Lindemann, L, Lohr, B, Lowe, M, Manczak, O, Milewski, J, Monteiro, T, Ng, JST, Notz, D, Ohrenberg, K, Park, IH, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Roco, M, Rohde, M, Roldan, J, Ryan, JJ, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Surrow, B, Tassi, E, Voss, T, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zarnecki, AF, Zeuner, W, Burow, BD, Grabosch, HJ, Meyer, A, Schlenstedt, S, Barbagli, G, Gallo, E, Pelfer, P, Anzivino, G, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Trefzger, T, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Macdonald, N, Saxon, DH, Sinclair, LE, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Gladilin, LK, Horstmann, D, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Schott, W, Zetsche, F, Bacon, TC, Butterworth, I, Cole, JE, Howell, C, Hung, BHY, Lamberti, L, Long, KR, Miller, DB, Pavel, N, Prinias, A, Sedgbeer, JK, Sideris, D, Walker, R, Mallik, U, Wang, SM, Wu, JT, Cloth, P, Filges, D, Fleck, JI, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Barreiro, F, Fernandez, JP, Garcia, G, Graciani, R, Hernandez, JM, Hervas, L, Labarga, L, Martinez, M, del Peso, J, Puga, J, Terron, J, de Troconiz, JF, Corriveau, F, Hanna, DS, Hartmann, J, Hung, LW, Murray, WN, Ochs, A, Riveline, M, Stairs, DG, St-Laurent, M, Ullmann, R, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Stifutkin, A, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Chlebana, F, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Verkerke, W, Vossebeld, J, Vreeswijk, M, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Romanowski, TA, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Nath, C, Noyes, VA, Quadt, A, Ruske, O, Tickner, JR, Uijterwaal, H, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Bulmahn, J, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Hart, JC, McCubbin, NA, Shah, TP, Barberis, E, Epperson, D, Heusch, C, Rahn, JT, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Abramowicz, H, Briskin, G, Dagan, S, Kananov, S, Levy, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Matsushita, T, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Sacchi, R, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Hartner, GF, Joo, KK, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Teuscher, RJ, Butterworth, JM, Catterall, CD, Jones, TW, Lane, JB, Saunders, RL, Sutton, MR, Wing, M, Ciborowski, J, Grzelak, G, Kasprzak, M, Muchorowski, K, Nowak, RJ, Pawlak, JM, Pawlak, R, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Adamus, M, Coldewey, C, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Dasu, S, Foudas, C, Loveless, RJ, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Khakzad, M, Schmidke, WB, and Collaboration, ZEUS
Subjects: POMERON, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, DISSOCIATION, PHOTON, SCATTERING, ENERGIES, MESONS, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Photon diffractive dissociation, γp → Xp, has been studied at HERA with the ZEUS detector using ep interactions where the virtuality Q2 of the exchanged photon is smaller than 0.02 GeV2. The squared four-momentum t exchanged at the proton vertex was determined in the range 0.073 < \t\ < 0.40 GeV2 by measuring the scattered proton in the ZEUS Leading Proton Spectrometer. In the photonproton centre-of-mass energy interval 176 < W < 225 GeV and for masses of the dissociated photon system 4 < Mx < 32 GeV, the t distribution has an exponential shape, dN/d\t\ ∝ exp (-b\t\), with a slope parameter b = 6.8 ± 0.9 (stat.) +1.2-1.1 (syst.) GeV-2.

36. Measurement of inclusive D*± and associated dijet cross sections in photoproduction at HERA

Author: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Cara Romeo, G., Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Coppola, N., Corradi, M., Pasquale, S., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P, Kappes, A., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Schnurbusch, H., Wieber, H., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Heath, G. P., Heath, H. F., Mcfall, J. D., Piccioni, D., Roff, D. G., Tapper, R. J., Capua, M., Iannotti, L., Mastroberardino, A., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J., Eskreys, A., Jan Figiel, Klimek, K., Przybycień, M. B., Zawiejski, L., Adamczyk, L., Bednarek, B., Bukowy, M., Czermak, A. M., Jeleń, K., Kisielewska, D., Kowalski, T., Przybycień, M., Rulikowska-Zarebska, E., Suszycki, L., Zajac, J., Duliński, Z., Kotański, A., Abbiendi, G., Bauerdick, L. A. T., Behrens, U., Beier, H., Bienlein, J. K., Desler, K., Drews, G., Fricke, U., Gialas, I., Goebel, F., Göttlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G. F., Hasell, D., Hebbel, K., Johnson, K. F., Kasemann, M., Koch, W., Kötz, U., Kowalski, H., Lindemann, L., Löhr, B., Martínez, M., Milewski, J., Milite, M., Monteiro, T., Notz, D., Pellegrino, A., Pelucchi, F., Piotrzkowski, K., Rohde, M., Roldán, J., Ryan, J. J., Saull, P. R. B., Savin, A. A., Schneekloth, U., Schwarzer, O., Selonke, F., Stonjek, S., Surrow, B., Tassi, E., Westphal, D., Wolf, G., Wollmer, U., Youngman, C., Zeuner, W., Burow, A. D., Coldewey, C., Grabosch, H. J., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Pelfer, P., Maccarrone, E., Votano, L., Bamberger, A., Eisenhardt, S., Markun, P., Raach, H., Trefzger, T., Wölfle, S., Bromley, J. T., Brook, N. H., Bussey, P. J., Doyle, A. T., Lee, S. W., Macdonald, N., Mccance, G. J., Saxon, D. H., Sinclair, L. E., Skillicorn, I. O., Strickland, E., Waugh, R., Bohnet, I., Gendner, N., Holm, U., Meyer-Larsen, A., Salehi, H., Wick, K., Garfagnini, A., Gladilin, L. K., Kçira, D., Klanner, R., Lohrmann, E., Poelz, G., Zetsche, F., Bacon, T. C., Butterworth, I., Cole, J. E., Howell, G., Lamberti, L., Long, K. R., Miller, D. B., Pavel, N., Prinias, A., Sedgbeer, J. K., Sideris, D., Walker, R., Mallik, U., Wang, S. M., Wu, J. T., Cloth, P., Filges, D., Fleck, J. I., Ishii, T., Kuze, M., Suzuki, I., Tokushuku, K., Yamada, S., Yamauchi, K., Yamazaki, Y., Hong, S. J., Lee, S. B., Nam, S. W., Park, S. K., Lim, F., Park, I. H., Son, D., Barreiro, F., Fernández, J. P., García, G., Glasman, C., Hernández, J. M., Hervás, L., Labarga, L., Del Peso, J., Puga, J., Terrón, J., Trocóniz, J. F., Corriveau, F., Hanna, D. S., Hartmann, J., Murray, W. N., Ochs, A., Riveline, M., Stairs, D. G., St-Laurent, M., Tsurugai, T., Bashkirov, V., Dolgoshein, B. A., Stifutkin, A., Bashindzhagyan, H. L., Ermolov, P. F., Golubkov, Y. A., Khein, L. A., Korotkova, N. A., Korzhavina, I. A., Kuzmin, V. A., Lukina, O. Y., Proskuryakov, A. S., Shcheglova, L. M., Solomin, A. N., Zotkin, S. A., Bokel, C., Botje, M., Brümmer, N., Engelen, J., Koffeman, E., Kooijman, P., Sighem, A., Tiecke, H., Tuning, N., Verkerke, W., Vossebeld, J., Wiggers, L., Wolf, E., Acosta, D., Bylsma, B., Durkin, L. S., Gilmore, J., Ginsburg, C. M., Kim, C. L., Ling, T. Y., Nylander, P., Romanowski, T. A., Blaikley, H. E., Cashmore, R. J., Cooper-Sarkar, A. M., Devenish, R. C. E., Edmonds, J. K., Große-Knetter, J., Harnew, N., Nath, C., Noyes, V. A., Quadt, A., Ruske, O., Tickner, J. R., Walczak, R., Waters, D. S., Bertolin, A., Brugnera, R., Carlin, R., Dal Corso, F., Dosselli, U., Limentani, S., Morandin, M., Posocco, M., Stanco, L., Stroili, R., Voci, C., Oh, B. Y., Okrasiński, J. R., Toothacker, W. S., Whitmore, J. J., Iga, Y., D Agostini, G., Marini, G., Nigro, A., Raso, M., Hart, J. C., Mccubbin, N. A., Shah, T. P., Epperson, D., Heusch, C., Rahn, J. T., Sadrozinski, H. F. -W, Seiden, A., Wichmann, R., Williams, D. C., Abramowicz, H., Briskin, G., Dagan, S., Kananov, S., Levy, A., Abe, T., Fusayasu, T., Inuzuka, M., Nagano, K., Umemori, K., Yamashita, T., Hamatsu, R., Hirose, T., Homma, K., Kitamura, S., Matsushita, T., Nishimura, T., Arneodo, M., Cirio, R., Costa, M., Ferrero, M. I., Maselli, S., Monaco, V., Peroni, C., Petrucci, M. C., Ruspa, M., Sacchi, R., Solano, A., Staiano, A., Dardo, M., Bailey, D. C., Fagerstroem, C. -P, Galea, R., Joo, K. K., Levman, G. M., Martin, J. F., Orr, R. S., Polenz, S., Sabetfakhri, A., Simmons, D., Butterworth, J. M., Catterall, C. D., Hayes, M. E., Heaphy, E. A., Jones, T. W., Lane, J. B., Saunders, R. L., Sutton, M. R., Wing, M., Ciborowski, J., Grzelak, G., Nowak, R. J., Pawlak, J. M., Pawlak, R., Smalska, B., Tymieniecka, T., Wróblewski, A. K., Zakrzewski, J. A., Zarnecki, A. F., Adamus, M., Deppe, O., Eisenberg, Y., Hochman, D., Karshon, U., Badgett, W. F., Chapin, D., Cross, R., Dasu, S., Foudas, C., Loveless, R. J., Mattingly, S., Reeder, D. D., Smith, W. H., Vaiciulis, A., Wodarczyk, M., Deshpande, A., Dhawan, S., Hughes, V. W., Bhadra, S., Frisken, W. R., Khakzad, M., and Schmidke, W. B.
Subjects: Particle physics, HEAVY FLAVOR PRODUCTION, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), Meson, FRAGMENTATION FUNCTIONS, FOS: Physical sciences, Parton, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, HADRON-COLLISIONS, EP-COLLISIONS, PARTON DISTRIBUTIONS, PHOTON, CONSTRUCTION, 0103 physical sciences, Charm (quantum number), 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Perturbative QCD, HERA, Pseudorapidity, Production (computer science), High Energy Physics::Experiment
Abstract: Inclusive photoproduction of D*+- mesons has been measured for photon-proton centre-of-mass energies in the range 130 < W < 280 GeV and a photon virtuality Q^2 < 1 GeV^2. The data sample used corresponds to an integrated luminosity of 37 pb^-1. Total and differential cross sections as functions of the D* transverse momentum and pseudorapidity are presented in restricted kinematical regions and the data are compared with next-to-leading order (NLO) perturbative QCD calculations using the "massive charm" and "massless charm" schemes. The measured cross sections are generally above the NLO calculations, in particular in the forward (proton) direction. The large data sample also allows the study of dijet production associated with charm. A significant resolved as well as a direct photon component contribute to the cross section. Leading order QCD Monte Carlo calculations indicate that the resolved contribution arises from a significant charm component in the photon. A massive charm NLO parton level calculation yields lower cross sections compared to the measured results in a kinematic region where the resolved photon contribution is significant., 32 pages including 6 figures

37. Measurement of multiplicity and momentum spectra in the current and target regions of the Breit frame in deep inelastic scattering at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, DS, Barret, O, Cottingham, WN, Foster, B, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, LAT, Behrens, U, Beier, H, Bienlein, JK, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pellegrino, A, Pelucchi, F, Piotrzkowski, K, Rohde, M, Sauli, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Westphal, D, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Viani, ALD, Meyer, A, Monig, K, Schlenstedt, S, Straub, PB, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bromley, JT, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Prinias, A, Sedgbeer, JK, Sideris, D, Tapper, AD, Walker, R, Mallik, U, Wang, SM, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, SH, An, SH, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Labarga, L, del Peso, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Padhi, S, Riveline, M, Stairs, DG, St-Laurent, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, JJ, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Blaikley, HE, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Matsushita, T, Noyes, VA, Quadt, A, Ruske, O, Sutton, MR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Schechter, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, WB, and Collaboration, ZEUS
Subjects: CURRENT FRAGMENTATION REGION, MONTE-CARLO GENERATOR, SCALING VIOLATION, ZEUS, INCLUSIVE PARTICLE SPECTRA, CENTRAL TRACKING DETECTOR, INITIAL STATE RADIATION, E+E-ANNIHILATION, QCD COHERENCE, HADRON DISTRIBUTIONS, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Charged particle production in neutral current deep inelastic scattering (DIS) has been studied using the ZEUS detector. The evolution of the mean multiplicities, scaled momenta and transverse momenta in Q2 and cursive Greek chi for 10 < Q2 < 5120 GeV2 and cursive Greek chi > 6 × 10-4 has been investigated in the current and target fragmentation regions of the Breit frame. Distributions in the target region, using HERA data for the first time, are compared to distributions in the current region. Predictions based on MLLA and LPHD are inconsistent with the data.

38. Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, Mck, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, Gc, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, DE PASQUALE, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, Yz, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Hartmann, H, Heinloth, K, Hilger, E, Jakob, Hp, Kappes, A, Katz, Uf, Kerger, R, Paul, E, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Voss, Kc, Weber, A, Wieber, H, Bailey, Ds, Barret, O, Brook, Nh, Foster, B, Heath, Gp, Heath, Hf, Mcfall, Jd, Piccioni, D, Rodrigues, E, Scott, J, Tapper, Rj, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, Hy, Kim, Jy, Lee, Jh, Lim, It, Ma, Kj, Pac, My, Caldwell, A, Liu, W, Liu, X, Mellado, B, Sacchi, R, Sampson, S, Sciulli, F, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, Mb, Stopa, P, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, Am, Kowalski, T, Przybycien, M, RULIKOWSKA ZAREBSKA, E, Suszycki, L, Zajac, J, Kotanski, A, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Burgard, C, Desler, K, Drews, G, FOX MURPHY, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, Gf, Hasell, D, Hebbel, K, Johnson, Kf, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Petrucci, Mc, Piotrzkowski, K, Rohde, M, Saull, Prb, Savin, Aa, Schneekloth, U, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Coldewey, C, Grabosch, Hj, Viani, Ald, Meyer, A, Schlenstedt, S, Straub, Pb, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Bussey, Pj, Doyle, At, Lee, Sw, Macdonald, N, Mccance, Gj, Saxon, Dh, Sinclair, Le, Skillicorn, Io, Waugh, R, Bohnet, I, Gendner, N, Holm, U, MEYER LARSEN, A, Salehi, H, Wick, K, Garfagnini, Alberto, Gialas, I, Gladilin, Lk, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Goncalo, R, Long, Kr, Miller, Db, Tapper, Ad, Walker, R, Mallik, U, Wang, Sm, Cloth, P, Filges, D, Ishii, T, Kuze, M, Nagano, K, Tokushuku, K, Yamada, S, Yamazaki, Y, Ahn, Sh, An, Sh, Hong, Sj, Lee, Sb, Nam, Sw, Park, Sk, Lim, H, Park, Ih, Son, D, Barreiro, F, Garcia, G, Glasman, C, Gonzalez, O, Labarga, L, DEL PESO, J, Redondo, I, Terron, J, Barbi, M, Corriveau, F, Hanna, Ds, Ochs, A, Padhi, S, Riveline, M, Stairs, Dg, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, Ba, Bashindzhagyan, Gl, Ermolov, Pf, Golubkov, Ya, Khein, La, Korotkova, Na, Korzhavina, Ia, Kuzmin, Va, Lukina, Oy, Proskuryakov, As, Shcheglova, Lm, Solomin, An, Zotkin, Sa, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, VAN SIGHEM, A, Tiecke, H, Tuning, N, Velthuis, Jj, Verkerke, W, Vossebeld, J, Wiggers, L, DE WOLF, E, Bylsma, B, Durkin, Ls, Gilmore, J, Ginsburg, Cm, Kim, Cl, Ling, Ty, Nylander, P, Boogert, S, COOPER SARKAR AM, Devenish, Rce, GROSSE KNETTER, J, Matsushita, T, Ruske, O, Sutton, Mr, Walczak, R, Bertolin, A, Brugnera, Riccardo, Carlin, Roberto, DAL CORSO, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, Roberto, Voci, C, Iannotti, L, Oh, By, Okrasinski, Jr, Toothacker, Ws, Whitmore, Jj, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Cormack, C, Hart, Jc, Mccubbin, Na, Shah, Tp, Epperson, D, Heusch, C, Sadrozinski, Hfw, Seiden, A, Wichmann, R, Williams, Dc, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Abe, T, Fusayasu, T, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Inuzuka, M, Kitamura, S, Nishimura, T, Arneodo, M, Cartiglia, N, Cirio, R, Costa, M, Ferrero, Mi, Maselli, S, Monaco, V, Peroni, C, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Fagerstroem, Cp, Galea, R, Koop, T, Levman, Gm, Martin, Jf, Orr, Rs, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, Jm, Catterall, Cd, Hayes, Me, Heaphy, Ea, Jones, Tw, Lane, Jb, West, Bj, Ciborowski, J, Ciesielski, R, Grzelak, G, Nowak, Rj, Pawlak, Jm, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, Wf, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, Dd, Smith, Wh, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, Vw, Bhadra, S, Cole, Je, Frisken, Wr, HALL WILTON, R, Khakzad, M, Menary, S, Schmidke, Wb, and CA ZEUS COLLABORATION
Subjects: Particle physics, LARGE-T, Photon, Physics and Astronomy (miscellaneous), Meson, Nuclear Theory, ZEUS, ELASTIC-SCATTERING, QCD, ELECTROPRODUCTION, J/PSI, RHO(0), PHOTON, SHRINKAGE, HYDROGEN, Nuclear physics, Pomeron, Positron, Nuclear Experiment, Engineering (miscellaneous), QC, Physics, Quantum chromodynamics, Elastic scattering, High Energy Physics::Phenomenology, Momentum transfer, HERA, High Energy Physics::Experiment
Abstract: Elastic and proton–dissociative photoproduction of $\rho^0$ , $\phi$ and $J/\psi$ vector mesons ( $\gamma p\rightarrow Vp$ , $\gamma p\rightarrow VN$ , respectively) have been measured in $e^+p$ interactions at HERA up to $-t=3$ GeV $^2$ , where t is the four-momentum transfer squared at the photon–vector–meson vertex. The analysis is based on a data sample in which photoproduction reactions were tagged by detection of the scattered positron in a special-purpose calorimeter. This limits the photon virtuality, $Q^2$ , to values less than 0.01 GeV $^2$ , and selects a $\gamma p$ average center-of-mass energy of $\langle W\rangle$ = 94 GeV. Results for the differential cross sections, $\mbox{d}\sigma/\mbox{d}t$ , for $\rho^0$ , $\phi$ and $J/\psi$ mesons are presented and compared to the results of recent QCD calculations. Results are also presented for the t-dependence of the pion-pair invariant-mass distribution in the $\rho^0$ mass region and of the spin-density matrix elements determined from the decay-angle distributions. The Pomeron trajectory has been derived from measurements of the W dependence of the elastic differential cross sections $\mbox{d}\sigma/\mbox{d}t$ for both $\rho^0$ and $\phi$ mesons.

39. Measurement of dijet photoproduction at high transverse energies at HERA

Author: Breitweg, J, Chekanov, S, Derrick, M, Krakauer, D, Magill, S, Musgrave, B, Pellegrino, A, Repond, J, Stanek, R, Yoshida, R, Mattingly, MCK, Abbiendi, G, Anselmo, F, Antonioli, P, Bari, G, Basile, M, Bellagamba, L, Boscherini, D, Bruni, A, Bruni, G, Romeo, GC, Castellini, G, Cifarelli, L, Cindolo, F, Contin, A, Coppola, N, Corradi, M, De Pasquale, S, Giusti, P, Iacobucci, G, Laurenti, G, Levi, G, Margotti, A, Massam, T, Nania, R, Palmonari, F, Pesci, A, Polini, A, Sartorelli, G, Garcia, YZ, Zichichi, A, Amelung, C, Bornheim, A, Brock, I, Coboken, K, Crittenden, J, Deffner, R, Eckert, M, Hartmann, H, Heinloth, K, Heinz, L, Hilger, E, Jakob, HP, Kappes, A, Katz, UF, Kerger, R, Paul, E, Pfeiffer, M, Rautenberg, J, Schnurbusch, H, Stifutkin, A, Tandler, J, Weber, A, Wieber, H, Bailey, DS, Barret, O, Cottingham, WN, Foster, B, Heath, GP, Heath, HF, McFall, JD, Piccioni, D, Scott, J, Tapper, RJ, Capua, M, Mastroberardino, A, Schioppa, M, Susinno, G, Jeoung, HY, Kim, JY, Lee, JH, Lim, IT, Ma, KJ, Pac, MY, Caldwell, A, Cartiglia, N, Jing, Z, Liu, W, Mellado, B, Parsons, JA, Ritz, S, Sacchi, R, Sampson, S, Sciulli, F, Zhu, Q, Borzemski, P, Chwastowski, J, Eskreys, A, Figiel, J, Klimek, K, Olkiewicz, K, Przybycien, MB, Zawiejski, L, Adamczyk, L, Bednarek, B, Jelen, K, Kisielewska, D, Kowal, AM, Kowalski, T, Przybycien, M, Rulikowska-Zarebska, E, Suszycki, L, Zajac, J, Dulinski, Z, Kotanski, A, Bauerdick, LAT, Behrens, U, Bienlein, JK, Burgard, C, Desler, K, Drews, G, Fox-Murphy, A, Fricke, U, Goebel, F, Gottlicher, P, Graciani, R, Haas, T, Hain, W, Hartner, GF, Hasell, D, Hebbel, K, Johnson, KF, Kasemann, M, Koch, W, Kotz, U, Kowalski, H, Lindemann, L, Lohr, B, Martinez, M, Milewski, J, Milite, M, Monteiro, T, Moritz, M, Notz, D, Pelucchi, F, Piotrzkowski, K, Rohde, M, Saull, PRB, Savin, AA, Schneekloth, U, Schwarzer, O, Selonke, F, Sievers, M, Stonjek, S, Tassi, E, Wolf, G, Wollmer, U, Youngman, C, Zeuner, W, Burow, BD, Coldewey, C, Grabosch, HJ, Viani, ALD, Meyer, A, Monig, K, Schlenstedt, S, Straub, PB, Barbagli, G, Gallo, E, Pelfer, P, Maccarrone, G, Votano, L, Bamberger, A, Eisenhardt, S, Markun, P, Raach, H, Wolfle, S, Brook, NH, Bussey, PJ, Doyle, AT, Lee, SW, Macdonald, N, McCance, GJ, Saxon, DH, Sinclair, LE, Skillicorn, IO, Strickland, E, Waugh, R, Bohnet, I, Gendner, N, Holm, U, Meyer-Larsen, A, Salehi, H, Wick, K, Garfagnini, A, Gialas, I, Gladilin, LK, Kcira, D, Klanner, R, Lohrmann, E, Poelz, G, Zetsche, F, Bacon, TC, Cole, JE, Howell, G, Lamberti, L, Long, KR, Miller, DB, Prinias, A, Sedgbeer, JK, Sideris, D, Tapper, AD, Walker, R, Mallik, U, Wang, SM, Cloth, P, Filges, D, Ishii, T, Kuze, M, Suzuki, I, Tokushuku, K, Yamada, S, Yamauchi, K, Yamazaki, Y, Ahn, SH, An, SH, Hong, SJ, Lee, SB, Nam, SW, Park, SK, Lim, H, Park, IH, Son, D, Barreiro, F, Fernandez, JP, Garcia, G, Glasman, C, Hernandez, JM, Labarga, L, del Peso, J, Puga, J, Redondo, I, Terron, J, Corriveau, F, Hanna, DS, Hartmann, J, Murray, WN, Ochs, A, Padhi, S, Riveline, M, Stairs, DG, St-Laurent, M, Wing, M, Tsurugai, T, Bashkirov, V, Dolgoshein, BA, Bashindzhagyan, GL, Ermolov, PF, Golubkov, YA, Khein, LA, Korotkova, NA, Korzhavina, IA, Kuzmin, VA, Lukina, OY, Proskuryakov, AS, Shcheglova, LM, Solomin, AN, Zotkin, SA, Bokel, C, Botje, M, Brummer, N, Engelen, J, Koffeman, E, Kooijman, P, van Sighem, A, Tiecke, H, Tuning, N, Velthuis, JJ, Verkerke, W, Vossebeld, J, Wiggers, L, de Wolf, E, Acosta, D, Bylsma, B, Durkin, LS, Gilmore, J, Ginsburg, CM, Kim, CL, Ling, TY, Nylander, P, Blaikley, HE, Boogert, S, Cashmore, RJ, Cooper-Sarkar, AM, Devenish, RCE, Edmonds, JK, Grosse-Knetter, J, Harnew, N, Matsushita, T, Noyes, VA, Quadt, A, Ruske, O, Sutton, MR, Walczak, R, Waters, DS, Bertolin, A, Brugnera, R, Carlin, R, Dal Corso, F, Dondana, S, Dosselli, U, Dusini, S, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Iannotti, L, Oh, BY, Okrasinski, JR, Toothacker, WS, Whitmore, JJ, Iga, Y, D'Agostini, G, Marini, G, Nigro, A, Raso, M, Cormack, C, Hart, JC, McCubbin, NA, Shah, TP, Epperson, D, Heusch, C, Sadrozinski, HFW, Seiden, A, Wichmann, R, Williams, DC, Pavel, N, Abramowicz, H, Dagan, S, Kananov, S, Kreisel, A, Levy, A, Schechter, A, Abe, T, Fusayasu, T, Inuzuka, M, Nagano, K, Umemori, K, Yamashita, T, Hamatsu, R, Hirose, T, Homma, K, Kitamura, S, Nishimura, T, Arneodo, M, Cirio, R, Costa, M, Ferrero, MI, Maselli, S, Monaco, V, Peroni, C, Petrucci, MC, Ruspa, M, Solano, A, Staiano, A, Dardo, M, Bailey, DC, Fagerstroem, CP, Galea, R, Koop, T, Levman, GM, Martin, JF, Orr, RS, Polenz, S, Sabetfakhri, A, Simmons, D, Butterworth, JM, Catterall, CD, Hayes, ME, Heaphy, EA, Jones, TW, Lane, JB, Ciborowski, J, Grzelak, G, Nowak, RJ, Pawlak, JM, Pawlak, R, Smalska, B, Tymieniecka, T, Wroblewski, AK, Zakrzewski, JA, Zarnecki, AF, Adamus, M, Gadaj, T, Deppe, O, Eisenberg, Y, Hochman, D, Karshon, U, Badgett, WF, Chapin, D, Cross, R, Foudas, C, Mattingly, S, Reeder, DD, Smith, WH, Vaiciulis, A, Wildschek, T, Wodarczyk, M, Deshpande, A, Dhawan, S, Hughes, VW, Bhadra, S, Frisken, WR, Hall-Wilton, R, Khakzad, M, Menary, S, Schmidke, WB, and Collaboration, ZEUS
Subjects: (P)OVER-BAR-P COLLISIONS, ZEUS, PHOTON STRUCTURE-FUNCTION, STRUCTURE-FUNCTION F-2(GAMMA), NEXT-TO-LEADING ORDER, STRUCTURE-FUNCTION F2, CENTRAL TRACKING DETECTOR, JET CROSS-SECTIONS, PARTON DISTRIBUTIONS, HADRON-COLLISIONS, QCD ANALYSIS, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The cross section for dijet photoproduction at high transverse energies is presented as a function of the transverse energies and the pseudorapidities of the jets. The measurement is performed using a sample of ep-interactions corresponding to an integrated luminosity of 6.3 pb-1, recorded by the ZEUS detector. Jets are defined by applying a kT-clustering algorithm to the hadrons observed in the final state. The measured cross sections are compared to next-to-leading order QCD calculations. In a kinematic regime where theoretical uncertainties are expected to be small, the measured cross sections are higher than these calculations.

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

39 results on '"Bohnet, I."'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources