Author: "Sinram, K." - Searchworks@Jio Institute Digital Library Search Results

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216 results on '"Sinram, K."'

1. A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator

Author: Decking, W., Abeghyan, S., Abramian, P., Abramsky, A., Aguirre, A., Albrecht, C., Alou, P., Altarelli, M., Altmann, P., Amyan, K., Anashin, V., Apostolov, E., Appel, K., Auguste, D., Ayvazyan, V., Baark, S., Babies, F., Baboi, N., Bak, P., Balandin, V., Baldinger, R., Baranasic, B., Barbanotti, S., Belikov, O., Belokurov, V., Belova, L., Belyakov, V., Berry, S., Bertucci, M., Beutner, B., Block, A., Blöcher, M., Böckmann, T., Bohm, C., Böhnert, M., Bondar, V., Bondarchuk, E., Bonezzi, M., Borowiec, P., Bösch, C., Bösenberg, U., Bosotti, A., Böspflug, R., Bousonville, M., Boyd, E., Bozhko, Y., Brand, A., Branlard, J., Briechle, S., Brinker, F., Brinker, S., Brinkmann, R., Brockhauser, S., Brovko, O., Brück, H., Brüdgam, A., Butkowski, L., Büttner, T., Calero, J., Castro-Carballo, E., Cattalanotto, G., Charrier, J., Chen, J., Cherepenko, A., Cheskidov, V., Chiodini, M., Chong, A., Choroba, S., Chorowski, M., Churanov, D., Cichalewski, W., Clausen, M., Clement, W., Cloué, C., Cobos, J. A., Coppola, N., Cunis, S., Czuba, K., Czwalinna, M., D’Almagne, B., Dammann, J., Danared, H., de Zubiaurre Wagner, A., Delfs, A., Delfs, T., Dietrich, F., Dietrich, T., Dohlus, M., Dommach, M., Donat, A., Dong, X., Doynikov, N., Dressel, M., Duda, M., Duda, P., Eckoldt, H., Ehsan, W., Eidam, J., Eints, F., Engling, C., Englisch, U., Ermakov, A., Escherich, K., Eschke, J., Saldin, E., Faesing, M., Fallou, A., Felber, M., Fenner, M., Fernandes, B., Fernández, J. M., Feuker, S., Filippakopoulos, K., Floettmann, K., Fogel, V., Fontaine, M., Francés, A., Martin, I. Freijo, Freund, W., Freyermuth, T., Friedland, M., Fröhlich, L., Fusetti, M., Fydrych, J., Gallas, A., García, O., Garcia-Tabares, L., Geloni, G., Gerasimova, N., Gerth, C., Geßler, P., Gharibyan, V., Gloor, M., Głowinkowski, J., Goessel, A., Gołębiewski, Z., Golubeva, N., Grabowski, W., Graeff, W., Grebentsov, A., Grecki, M., Grevsmuehl, T., Gross, M., Grosse-Wortmann, U., Grünert, J., Grunewald, S., Grzegory, P., Feng, G., Guler, H., Gusev, G., Gutierrez, J. L., Hagge, L., Hamberg, M., Hanneken, R., Harms, E., Hartl, I., Hauberg, A., Hauf, S., Hauschildt, J., Hauser, J., Havlicek, J., Hedqvist, A., Heidbrook, N., Hellberg, F., Henning, D., Hensler, O., Hermann, T., Hidvégi, A., Hierholzer, M., Hintz, H., Hoffmann, F., Hoffmann, Markus, Hoffmann, Matthias, Holler, Y., Hüning, M., Ignatenko, A., Ilchen, M., Iluk, A., Iversen, J., Iversen, J., Izquierdo, M., Jachmann, L., Jardon, N., Jastrow, U., Jensch, K., Jensen, J., Jeżabek, M., Jidda, M., Jin, H., Johansson, N., Jonas, R., Kaabi, W., Kaefer, D., Kammering, R., Kapitza, H., Karabekyan, S., Karstensen, S., Kasprzak, K., Katalev, V., Keese, D., Keil, B., Kholopov, M., Killenberger, M., Kitaev, B., Klimchenko, Y., Klos, R., Knebel, L., Koch, A., Koepke, M., Köhler, S., Köhler, W., Kohlstrunk, N., Konopkova, Z., Konstantinov, A., Kook, W., Koprek, W., Körfer, M., Korth, O., Kosarev, A., Kosiński, K., Kostin, D., Kot, Y., Kotarba, A., Kozak, T., Kozak, V., Kramert, R., Krasilnikov, M., Krasnov, A., Krause, B., Kravchuk, L., Krebs, O., Kretschmer, R., Kreutzkamp, J., Kröplin, O., Krzysik, K., Kube, G., Kuehn, H., Kujala, N., Kulikov, V., Kuzminych, V., La Civita, D., Lacroix, M., Lamb, T., Lancetov, A., Larsson, M., Le Pinvidic, D., Lederer, S., Lensch, T., Lenz, D., Leuschner, A., Levenhagen, F., Li, Y., Liebing, J., Lilje, L., Limberg, T., Lipka, D., List, B., Liu, J., Liu, S., Lorbeer, B., Lorkiewicz, J., Lu, H. H., Ludwig, F., Machau, K., Maciocha, W., Madec, C., Magueur, C., Maiano, C., Maksimova, I., Malcher, K., Maltezopoulos, T., Mamoshkina, E., Manschwetus, B., Marcellini, F., Marinkovic, G., Martinez, T., Martirosyan, H., Maschmann, W., Maslov, M., Matheisen, A., Mavric, U., Meißner, J., Meissner, K., Messerschmidt, M., Meyners, N., Michalski, G., Michelato, P., Mildner, N., Moe, M., Moglia, F., Mohr, C., Mohr, S., Möller, W., Mommerz, M., Monaco, L., Montiel, C., Moretti, M., Morozov, I., Morozov, P., Mross, D., Mueller, J., Müller, C., Müller, J., Müller, K., Munilla, J., Münnich, A., Muratov, V., Napoly, O., Näser, B., Nefedov, N., Neumann, Reinhard, Neumann, Rudolf, Ngada, N., Noelle, D., Obier, F., Okunev, I., Oliver, J. A., Omet, M., Oppelt, A., Ottmar, A., Oublaid, M., Pagani, C., Paparella, R., Paramonov, V., Peitzmann, C., Penning, J., Perus, A., Peters, F., Petersen, B., Petrov, A., Petrov, I., Pfeiffer, S., Pflüger, J., Philipp, S., Pienaud, Y., Pierini, P., Pivovarov, S., Planas, M., Pławski, E., Pohl, M., Polinski, J., Popov, V., Prat, S., Prenting, J., Priebe, G., Pryschelski, H., Przygoda, K., Pyata, E., Racky, B., Rathjen, A., Ratuschni, W., Regnaud-Campderros, S., Rehlich, K., Reschke, D., Robson, C., Roever, J., Roggli, M., Rothenburg, J., Rusiński, E., Rybaniec, R., Sahling, H., Salmani, M., Samoylova, L., Sanzone, D., Saretzki, F., Sawlanski, O., Schaffran, J., Schlarb, H., Schlösser, M., Schlott, V., Schmidt, C., Schmidt-Foehre, F., Schmitz, M., Schmökel, M., Schnautz, T., Schneidmiller, E., Scholz, M., Schöneburg, B., Schultze, J., Schulz, C., Schwarz, A., Sekutowicz, J., Sellmann, D., Semenov, E., Serkez, S., Sertore, D., Shehzad, N., Shemarykin, P., Shi, L., Sienkiewicz, M., Sikora, D., Sikorski, M., Silenzi, A., Simon, C., Singer, W., Singer, X., Sinn, H., Sinram, K., Skvorodnev, N., Smirnow, P., Sommer, T., Sorokin, A., Stadler, M., Steckel, M., Steffen, B., Steinhau-Kühl, N., Stephan, F., Stodulski, M., Stolper, M., Sulimov, A., Susen, R., Świerblewski, J., Sydlo, C., Syresin, E., Sytchev, V., Szuba, J., Tesch, N., Thie, J., Thiebault, A., Tiedtke, K., Tischhauser, D., Tolkiehn, J., Tomin, S., Tonisch, F., Toral, F., Torbin, I., Trapp, A., Treyer, D., Trowitzsch, G., Trublet, T., Tschentscher, T., Ullrich, F., Vannoni, M., Varela, P., Varghese, G., Vashchenko, G., Vasic, M., Vazquez-Velez, C., Verguet, A., Vilcins-Czvitkovits, S., Villanueva, R., Visentin, B., Viti, M., Vogel, E., Volobuev, E., Wagner, R., Walker, N., Wamsat, T., Weddig, H., Weichert, G., Weise, H., Wenndorf, R., Werner, M., Wichmann, R., Wiebers, C., Wiencek, M., Wilksen, T., Will, I., Winkelmann, L., Winkowski, M., Wittenburg, K., Witzig, A., Wlk, P., Wohlenberg, T., Wojciechowski, M., Wolff-Fabris, F., Wrochna, G., Wrona, K., Yakopov, M., Yang, B., Yang, F., Yurkov, M., Zagorodnov, I., Zalden, P., Zavadtsev, A., Zavadtsev, D., Zhirnov, A., Zhukov, A., Ziemann, V., Zolotov, A., Zolotukhina, N., Zummack, F., and Zybin, D.
Published: 2020
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2. Electron Scattering with Polarized Targets at TESLA

Author: Group, The TESLA-N Study, Anselmino, M., Aschenauer, E. C., Belostotski, S., Bialowons, W., Bluemlein, J., Braun, V., Brinkmann, R., Dueren, M., Ellinghaus, F., Goeke, K., Goertz, St., Gute, A., Harmsen, J., Harrach, D. v., Jakob, R., Kabuss, E. M., Kaiser, R., Korotkov, V., Kroll, P., Leader, E., Lehmann-Dronke, B., Mankiewicz, L., Meier, A., Meyer, W., Meyners, N., Mueller, D., Mulders, P. J., Nowak, W. -D., Niedermeier, L., Oganessyan, K., Pobilitsa, P. V., Polyakov, M. V., Reicherz, G., Rith, K., Ryckbosch, D., Schaefer, A., Sinram, K., Steenhoven, G. v. d., Steffens, E., Steijger, J., and Weiss, C.
Subjects: High Energy Physics - Phenomenology
Abstract: Measurements of polarized electron-nucleon scattering can be realized at the TESLA linear collider facility with projected luminosities that are about two orders of magnitude higher than those expected of other experiments at comparable energies. Longitudinally polarized electrons, accelerated as a small fraction of the total current in the e+ arm of TESLA, can be directed onto a solid state target that may be either longitudinally or transversely polarized. A large variety of polarized parton distribution and fragmentation functions can be determined with unprecedented accuracy, many of them for the first time. A main goal of the experiment is the precise measurement of the x- and Q^2-dependence of the experimentally totally unknown quark transversity distributions that will complete the information on the nucleon's quark spin structure as relevant for high energy processes. Comparing their Q^2-evolution to that of the corresponding helicity distributions constitutes an important precision test of the predictive power of QCD in the spin sector. Measuring transversity distributions and tensor charges allows access to the hitherto unmeasured chirally odd operators in QCD which are of great importance to understand the role of chiral symmetry. The possibilities of using unpolarized targets and of experiments with a real photon beam turn TESLA-N into a versatile next-generation facility at the intersection of particle and nuclear physics., Comment: 24 pages, 10 figures
Published: 2000

3. Author Correction: A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator

Author: Decking, W., Abeghyan, S., Abramian, P., Abramsky, A., Aguirre, A., Albrecht, C., Alou, P., Altarelli, M., Altmann, P., Amyan, K., Anashin, V., Apostolov, E., Appel, K., Auguste, D., Ayvazyan, V., Baark, S., Babies, F., Baboi, N., Bak, P., Balandin, V., Baldinger, R., Baranasic, B., Barbanotti, S., Belikov, O., Belokurov, V., Belova, L., Belyakov, V., Berry, S., Bertucci, M., Beutner, B., Block, A., Blöcher, M., Böckmann, T., Bohm, C., Böhnert, M., Bondar, V., Bondarchuk, E., Bonezzi, M., Borowiec, P., Bösch, C., Bösenberg, U., Bosotti, A., Böspflug, R., Bousonville, M., Boyd, E., Bozhko, Y., Brand, A., Branlard, J., Briechle, S., Brinker, F., Brinker, S., Brinkmann, R., Brockhauser, S., Brovko, O., Brück, H., Brüdgam, A., Butkowski, L., Büttner, T., Calero, J., Castro-Carballo, E., Cattalanotto, G., Charrier, J., Chen, J., Cherepenko, A., Cheskidov, V., Chiodini, M., Chong, A., Choroba, S., Chorowski, M., Churanov, D., Cichalewski, W., Clausen, M., Clement, W., Cloué, C., Cobos, J. A., Coppola, N., Cunis, S., Czuba, K., Czwalinna, M., D’Almagne, B., Dammann, J., Danared, H., de Zubiaurre Wagner, A., Delfs, A., Delfs, T., Dietrich, F., Dietrich, T., Dohlus, M., Dommach, M., Donat, A., Dong, X., Doynikov, N., Dressel, M., Duda, M., Duda, P., Eckoldt, H., Ehsan, W., Eidam, J., Eints, F., Engling, C., Englisch, U., Ermakov, A., Escherich, K., Eschke, J., Saldin, E., Faesing, M., Fallou, A., Felber, M., Fenner, M., Fernandes, B., Fernández, J. M., Feuker, S., Filippakopoulos, K., Floettmann, K., Fogel, V., Fontaine, M., Francés, A., Martin, I. Freijo, Freund, W., Freyermuth, T., Friedland, M., Fröhlich, L., Fusetti, M., Fydrych, J., Gallas, A., García, O., Garcia-Tabares, L., Geloni, G., Gerasimova, N., Gerth, C., Geßler, P., Gharibyan, V., Gloor, M., Głowinkowski, J., Goessel, A., Gołębiewski, Z., Golubeva, N., Grabowski, W., Graeff, W., Grebentsov, A., Grecki, M., Grevsmuehl, T., Gross, M., Grosse-Wortmann, U., Grünert, J., Grunewald, S., Grzegory, P., Feng, G., Guler, H., Gusev, G., Gutierrez, J. L., Hagge, L., Hamberg, M., Hanneken, R., Harms, E., Hartl, I., Hauberg, A., Hauf, S., Hauschildt, J., Hauser, J., Havlicek, J., Hedqvist, A., Heidbrook, N., Hellberg, F., Henning, D., Hensler, O., Hermann, T., Hidvégi, A., Hierholzer, M., Hintz, H., Hoffmann, F., Hoffmann, Markus, Hoffmann, Matthias, Holler, Y., Hüning, M., Ignatenko, A., Ilchen, M., Iluk, A., Iversen, J., Iversen, J., Izquierdo, M., Jachmann, L., Jardon, N., Jastrow, U., Jensch, K., Jensen, J., Jeżabek, M., Jidda, M., Jin, H., Johansson, N., Jonas, R., Kaabi, W., Kaefer, D., Kammering, R., Kapitza, H., Karabekyan, S., Karstensen, S., Kasprzak, K., Katalev, V., Keese, D., Keil, B., Kholopov, M., Killenberger, M., Kitaev, B., Klimchenko, Y., Klos, R., Knebel, L., Koch, A., Koepke, M., Köhler, S., Köhler, W., Kohlstrunk, N., Konopkova, Z., Konstantinov, A., Kook, W., Koprek, W., Körfer, M., Korth, O., Kosarev, A., Kosiński, K., Kostin, D., Kot, Y., Kotarba, A., Kozak, T., Kozak, V., Kramert, R., Krasilnikov, M., Krasnov, A., Krause, B., Kravchuk, L., Krebs, O., Kretschmer, R., Kreutzkamp, J., Kröplin, O., Krzysik, K., Kube, G., Kuehn, H., Kujala, N., Kulikov, V., Kuzminych, V., La Civita, D., Lacroix, M., Lamb, T., Lancetov, A., Larsson, M., Le Pinvidic, D., Lederer, S., Lensch, T., Lenz, D., Leuschner, A., Levenhagen, F., Li, Y., Liebing, J., Lilje, L., Limberg, T., Lipka, D., List, B., Liu, J., Liu, S., Lorbeer, B., Lorkiewicz, J., Lu, H. H., Ludwig, F., Machau, K., Maciocha, W., Madec, C., Magueur, C., Maiano, C., Maksimova, I., Malcher, K., Maltezopoulos, T., Mamoshkina, E., Manschwetus, B., Marcellini, F., Marinkovic, G., Martinez, T., Martirosyan, H., Maschmann, W., Maslov, M., Matheisen, A., Mavric, U., Meißner, J., Meissner, K., Messerschmidt, M., Meyners, N., Michalski, G., Michelato, P., Mildner, N., Moe, M., Moglia, F., Mohr, C., Mohr, S., Möller, W., Mommerz, M., Monaco, L., Montiel, C., Moretti, M., Morozov, I., Morozov, P., Mross, D., Mueller, J., Müller, C., Müller, J., Müller, K., Munilla, J., Münnich, A., Muratov, V., Napoly, O., Näser, B., Nefedov, N., Neumann, Reinhard, Neumann, Rudolf, Ngada, N., Noelle, D., Obier, F., Okunev, I., Oliver, J. A., Omet, M., Oppelt, A., Ottmar, A., Oublaid, M., Pagani, C., Paparella, R., Paramonov, V., Peitzmann, C., Penning, J., Perus, A., Peters, F., Petersen, B., Petrov, A., Petrov, I., Pfeiffer, S., Pflüger, J., Philipp, S., Pienaud, Y., Pierini, P., Pivovarov, S., Planas, M., Pławski, E., Pohl, M., Polinski, J., Popov, V., Prat, S., Prenting, J., Priebe, G., Pryschelski, H., Przygoda, K., Pyata, E., Racky, B., Rathjen, A., Ratuschni, W., Regnaud-Campderros, S., Rehlich, K., Reschke, D., Robson, C., Roever, J., Roggli, M., Rothenburg, J., Rusiński, E., Rybaniec, R., Sahling, H., Salmani, M., Samoylova, L., Sanzone, D., Saretzki, F., Sawlanski, O., Schaffran, J., Schlarb, H., Schlösser, M., Schlott, V., Schmidt, C., Schmidt-Foehre, F., Schmitz, M., Schmökel, M., Schnautz, T., Schneidmiller, E., Scholz, M., Schöneburg, B., Schultze, J., Schulz, C., Schwarz, A., Sekutowicz, J., Sellmann, D., Semenov, E., Serkez, S., Sertore, D., Shehzad, N., Shemarykin, P., Shi, L., Sienkiewicz, M., Sikora, D., Sikorski, M., Silenzi, A., Simon, C., Singer, W., Singer, X., Sinn, H., Sinram, K., Skvorodnev, N., Smirnow, P., Sommer, T., Sorokin, A., Stadler, M., Steckel, M., Steffen, B., Steinhau-Kühl, N., Stephan, F., Stodulski, M., Stolper, M., Sulimov, A., Susen, R., Świerblewski, J., Sydlo, C., Syresin, E., Sytchev, V., Szuba, J., Tesch, N., Thie, J., Thiebault, A., Tiedtke, K., Tischhauser, D., Tolkiehn, J., Tomin, S., Tonisch, F., Toral, F., Torbin, I., Trapp, A., Treyer, D., Trowitzsch, G., Trublet, T., Tschentscher, T., Ullrich, F., Vannoni, M., Varela, P., Varghese, G., Vashchenko, G., Vasic, M., Vazquez-Velez, C., Verguet, A., Vilcins-Czvitkovits, S., Villanueva, R., Visentin, B., Viti, M., Vogel, E., Volobuev, E., Wagner, R., Walker, N., Wamsat, T., Weddig, H., Weichert, G., Weise, H., Wenndorf, R., Werner, M., Wichmann, R., Wiebers, C., Wiencek, M., Wilksen, T., Will, I., Winkelmann, L., Winkowski, M., Wittenburg, K., Witzig, A., Wlk, P., Wohlenberg, T., Wojciechowski, M., Wolff-Fabris, F., Wrochna, G., Wrona, K., Yakopov, M., Yang, B., Yang, F., Yurkov, M., Zagorodnov, I., Zalden, P., Zavadtsev, A., Zavadtsev, D., Zhirnov, A., Zhukov, A., Ziemann, V., Zolotov, A., Zolotukhina, N., Zummack, F., and Zybin, D.
Published: 2020
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4. Precision septum-like dipole magnet for the HERA luminosity upgrade

Author: Anderberg, B., Danielsson, J., Beeckman, W., Holler, Y., Sinram, K., Vieweg, M., Willeke, F., and Woebke, G.
Subjects: Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract: Septum-like dipole magnets, denoted BQ, have been designed for the HERA luminosity upgrade by Scanditronix Magnets AB in a collaborative effort with AMACC AB.
Published: 2002

5. Septum-magnet for the main extraction line of the Tesla linear collider

Author: Bondarchuk, E., Doinikov, N., Kitaev, Konstantinov, Yu., Lokiev, V., Muratov, V., Kikiforov, A., Peregud, V., Petrov, A., Sinram, K., and Walker, N.
Subjects: Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Magnets -- Research, Linear accelerators -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract: Calculations and design problems for the normal-conducting septum-magnet for the Main extraction Line of the TESLA linear collider are discussed. A mock-up of one section of the septum-magnet has been built and will be tested at the D.V. Efremov Scientific Research Institute of Electrophysical Apparatus.
Published: 2002

6. Precision septum half-quadrupoles for the HERA luminosity-upgrade

Author: Bondarchuk, E., Doinikov, N., Ivkin, V., Korshakov, v., Muratov, V., Peregud, V., Woebke, G., Holler, Y., Petrov, A., Sinram, K., and Willeke, F.
Subjects: Superconducting magnets -- Models, Business, Electronics, Electronics and electrical industries
Abstract: GM quadrupole septum magnets are described for use in the HERA luminosity-upgrade project, and the requirements for magnetic field are discussed.
Published: 2000

7. Precision quadrupole magnets for the HERA luminosity upgrade

Author: Bondarchuk, E., Doinikov, N., Ivkin, V., Korshakov, V., Muratov, V., Peregud, V., Petrov, A., Holler, Y., Sinram, K., Willeke, F., and Woebke, G.
Subjects: Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract: The HERA Luminosity Upgrade project is discussed with regard to the design of precision quadrupole magnets.
Published: 2000

8. The HERMES polarized hydrogen and deuterium gas target in the HERA electron storage ring

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Balin, D., Baumgarten, C., Beckmann, M., Belostotski, S., Bianchi, N., Blok, H.P., Böttcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Braun, B., Brüll, A., Bryzgalov, V., Capitani, G.P., Capiluppi, M., Chen, T., Ciullo, G., Contalbrigo, M., Court, G., Dalpiaz, P.F., De Leo, R., Demey, M., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Düren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Gregor, I.M., Hadjidakis, C., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Hristova, I., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kobayashi, T., Koch, N., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikás, L., Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L.A., Lorenzon, W., Lu, H., Lu, J., Lu, S., Ma, B.-Q., Maiheu, B., Makins, N.C.R., Mao, Y., Marianski, B., Marukyan, H., Mexner, V., Meyners, N., Mussa, R., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Osborne, A., Pickert, N., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Schill, C., Schnell, G., Schüler, K.P., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.-A., Shutov, V., Sinram, K., Sommer, W., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stinzing, F., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., van Haarlem, Y., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Vogel, C., Volmer, J., Wang, S., Wendland, J., Wilbert, J., Wise, T., Ybeles Smit, G., Ye, Y., Ye, Z., Yen, S., Zihlmann, B., and Zupranski, P.
Published: 2005
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9. Nuclear effects on R= σL/ σT in deep-inelastic scattering

Author: Ackerstaff, K, Airapetian, A, Akopov, N, Akushevich, I, Amarian, M, Aschenauer, E.C, Avakian, H, Avakian, R, Avetissian, A, Bains, B, Baumgarten, C, Beckmann, M, Belostotski, S, Belz, J.E, Benisch, Th, Bernreuther, S, Bianchi, N, Blouw, J, Böttcher, H, Borissov, A, Bouwhuis, M, Brack, J, Brauksiepe, S, Braun, B, Bray, B, Brons, St, Brückner, W, Brüll, A, Bruins, E.E.W, Bulten, H.J, Capitani, G.P, Carter, P, Chumney, P, Cisbani, E, Court, G.R, Dalpiaz, P.F, De Sanctis, E, De Schepper, D, Devitsin, E, de Witt Huberts, P.K.A, Di Nezza, P, Düren, M, Dvoredsky, A, Elbakian, G, Ely, J, Fantoni, A, Fechtchenko, A, Ferstl, M, Fiedler, K, Filippone, B.W, Fischer, H, Fox, B, Franz, J, Frullani, S, Funk, M.-A, Gärber, Y, Gao, H, Garibaldi, F, Gavrilov, G, Geiger, P, Gharibyan, V, Golendukhin, A, Graw, G, Grebeniouk, O, Green, P.W, Greeniaus, L.G, Grosshauser, C, Guidal, M, Gute, A, Gyurjyan, V, Haas, J.P, Haeberli, W, Hansen, J.-O, Hartig, M, Hasch, D, Häusser, O, Heinsius, F.H, Henderson, R, Henoch, M, Hertenberger, R, Holler, Y, Holt, R.J, Hoprich, W, Ihssen, H, Iodice, M, Izotov, A, Jackson, H.E, Jgoun, A, Kaiser, R, Kinney, E, Kirsch, M, Kisselev, A, Kitching, P, Kobayashi, H, Koch, N, Königsmann, K, Kolstein, M, Kolster, H, Korotkov, V, Korsch, W, Kozlov, V, Kramer, L.H, Krivokhijine, V.G, Kurisuno, M, Kyle, G, Lachnit, W, Lenisa, P, Lorenzon, W, Makins, N.C.R, Martens, F.K, Martin, J.W, Masoli, F, Mateos, A, McAndrew, M, McIlhany, K, McKeown, R.D, Meissner, F, Menden, F, Metz, A, Meyners, N, Mikloukho, O, Miller, C.A, Miller, M.A, Milner, R, Most, A, Muccifora, V, Mussa, R, Nagaitsev, A, Naryshkin, Yu, Nathan, A.M, Neunreither, F, Niczyporuk, J.M, Nowak, W.-D, Nupieri, M, O'Neill, T.G, Openshaw, R, Ouyang, J, Owen, B.R, Papavassiliou, V, Pate, S.F, Pitt, M, Potashov, S, Potterveld, D.H, Rakness, G, Reali, A, Redwine, R, Reolon, A.R, Ristinen, R, Rith, K, Rossi, P, Rudnitsky, S, Ruh, M, Ryckbosch, D, Sakemi, Y, Savin, I, Scarlett, C, Schäfer, A, Schmidt, F, Schmitt, H, Schnell, G, Schüler, K.P, Schwind, A, Seibert, J, Shibata, T.-A, Shibatani, K, Shin, T, Shutov, V, Simani, C, Simon, A, Sinram, K, Slavich, P, Spengos, M, Steffens, E, Stenger, J, Stewart, J, Stoesslein, U, Sutter, M, Tallini, H, Taroian, S, Terkulov, A, Thomas, E, Tipton, B, Tytgat, M, Urciuoli, G.M, van den Brand, J.F.J, van der Steenhoven, G, van de Vyver, R, van Hunen, J.J, Vetterli, M.C, Vikhrov, V, Vincter, M.G, Visser, J, Volk, E, Wander, W, Wendland, J, Williamson, S.E, Wise, T, Woller, K, Yoneyama, S, and Zohrabian, H
Published: 2000
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10. Flavor decomposition of the polarized quark distributions in the nucleon from inclusive and semi-inclusive deep-inelastic scattering

Author: Ackerstaff, K., Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Barrow, S., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J.E., Benisch, Th., Bernreuther, S., Bianchi, N., Blanchard, S., Blouw, J., Böttcher, H., Borissov, A., Brack, J., Bray, B., Brauksiepe, S., Braun, B., Brons, St., Brückner, W., Brüll, A., Bruins, E.E.W., Bulten, H.J., Cadman, R.V., Capitani, G.P., Carter, P., Chumney, P., Cisbani, E., Court, G.R., Dalpiaz, P.F., De Leo, R., Delheij, P.P.J., De Sanctis, E., De Schepper, D., Devitsin, E., de Witt Huberts, P.K.A., Di Nezza, P., Düren, M., Dvoredsky, A., Ely, J., Elbakian, G., Emerson, J., Fantoni, A., Fechtchenko, A., Ferstl, M., Fick, D., Fiedler, K., Filippone, B.W., Fischer, H., Fortune, H.T., Fox, B., Frabetti, S., Franz, J., Frullani, S., Funk, M.-A., Gagunashvili, N.D., Galumian, P., Gao, H., Gärber, Y., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Grosshauser, C., Guidal, M., Gute, A., Gyurjyan, V., Haas, J.P., Haeberli, W., Hansen, J.-O., Hasch, D., Häusser, O., Henderson, R., Heinsius, F.H., Henkes, Th., Henoch, M., Hertenberger, R., Holler, Y., Holt, R.J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H.E., Jgoun, A., Jones, C., Kaiser, R., Kestel, M., Kinney, E., Kirsch, M., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Königsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L.H., Krause, B., Krivokhijine, V.G., Kückes, M., Kümmell, F., Kurisuno, M., Kyle, G., Lachnit, W., Lorenzon, W., Lung, A., Makins, N.C.R., Martens, F.K., Martin, J.W., Marukyan, H., Masoli, F., Mateos, A., Maul, M., McAndrew, M., McIlhany, K., McKeown, R.D., Meissner, F., Menden, F., Mercer, D., Metz, A., Meyners, N., Mikloukho, O., Miller, C.A., Miller, M.A., Milner, R., Mitsyn, V., Most, A., Mozzetti, R., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Yu., Nathan, A.M., Neunreither, F., Niczyporuk, J.M., Nowak, W.-D., Nupieri, M., Oelwein, P., Ogami, H., O'Neill, T.G., Openshaw, R., Owen, B.R., Ouyang, J., Papavassiliou, V., Pate, S.F., Pitt, M., Poolman, H.R., Potashov, S., Potterveld, D.H., Rakness, G., Reali, A., Redwine, R., Reolon, A.R., Ristinen, R., Rith, K., Röper, G., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Savin, I., Scarlett, C., Schäfer, A., Schmidt, F., Schmitt, H., Schnell, G., Schüler, K.P., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Smythe, W.R., Sowinski, J., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stock, F., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Thiessen, D.M., Tipton, B., Thomas, E., Trudel, A., Tytgat, M., Urciuoli, G.M., van Hunen, J.J., van de Vyver, R., van den Brand, J.F.J., van der Steenhoven, G., Vetterli, M.C., Vikhrov, V., Vincter, M., Visser, J., Volk, E., Wander, W., Welch, T.P., Wendland, J., Williamson, S.E., Wise, T., Woller, K., Yoneyama, S., Zapfe, K., Zohrabian, H., and Zurmühle, R.
Published: 1999
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11. Hard exclusive electroproduction of π+π− pairs

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Balin, D., Baturin, V., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Böttcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brüll, A., Bryzgalov, V., Capitani, G.P., Chen, T., Ciullo, G., Contalbrigo, M., Dalpiaz, P.F., De Leo, R., Demey, M., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Düren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L.G., Gregor, I.M., Griffioen, K.A., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikás, L., Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L.A., Lipka, K., Lorenzon, W., Lu, H., Lu, J., Lu, S., Ma, B.-Q., Maiheu, B., Makins, N.C.R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Osborne, A., Pickert, N., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Schäfer, A., Schill, C., Schnell, G., Schüler, K.P., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.-A., Shutov, V., Sinram, K., Sommer, W., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stinzing, F., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., van Haarlem, Y., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Ybeles Smit, G., Ye, Y., Ye, Z., Yen, S., Zihlmann, B., and Zupranski, P.
Subjects: Nuclear and High Energy Physics
Published: 2004
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12. Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction

Author: Airapetian, A., Akopov, N., Beckmann, M., Krivokhijine, V. G., Kurisuno, M., Kyle, G., Lachnit, W., Lenisa, P., Lorenzon, W., Makins, N. C. R., Martens, F. K., Martin, J. W., Masoli, F., Belostotski, S., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Belz, J. E., Miller, M. A., Milner, R., Most, A., Muccifora, V., Mussa, R., Nagaitsev, A., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, M., Benisch, Th., Nowak, W.-D., Nupieri, M., Oganessyan, K. A., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Papavassiliou, V., Pate, S. F., Pitt, M., Bernreuther, S., Potashov, S., Potterveld, D. H., Rakness, G., Reali, A., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Bianchi, N., Ruh, M., Ryckbosch, D., Sakemi, Y., Savin, I., Scarlett, C., Schäfer, A., Schmidt, F., Schmitt, H., Schnell, G., Schüler, K. P., Blouw, J., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Böttcher, H., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Teryaev, O., Borissov, A., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G. M., van den Brand, J. F. J., van der Steenhoven, G., van de Vyver, R., van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Bouwhuis, M., Vincter, M. G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S. E., Wise, T., Woller, K., Yoneyama, S., Zohrabian, H., Amarian, M., Brack, J., HERMES Collaboration, Brauksiepe, S., Braun, B., Bray, B., Brons, St., Brückner, W., Brüll, A., Bruins, E. E. W., Bulten, H. J., Capitani, G. P., Aschenauer, E. C., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., De Sanctis, E., De Schepper, D., Devitsin, E., de Witt Huberts, P. K. A., Di Nezza, P., Avakian, H., Düren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Ferstl, M., Fiedler, K., Filippone, B. W., Fischer, H., Avakian, R., Fox, B., Franz, J., Frullani, S., Funk, M.-A., Gärber, Y., Gao, H., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Avetissian, A., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M., Gute, A., Gyurjyan, V., Haas, J. P., Avetissian, E., Haeberli, W., Hansen, J.-O., Hartig, M., Hasch, D., Häusser, O., Heinsius, F. H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Bains, B., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Baumgarten, C., Kitching, P., Kobayashi, H., Koch, N., Königsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., and (Astro)-Particles Physics
Subjects: Quark, Particle physics, Proton structure, FRAGMENTATION FUNCTIONS, media_common.quotation_subject, General Physics and Astronomy, BEAM, NUCLEONS, 01 natural sciences, Asymmetry, Nuclear physics, Pion, LEPTOPRODUCTION, 0103 physical sciences, ddc:550, DISTRIBUTIONS, Nuclear Experiment, 010306 general physics, media_common, Physics, 010308 nuclear & particles physics, Scattering, polarized target internal, Deep inelastic scattering, Transverse plane, Distribution function, ANALYZING POWER, High Energy Physics::Experiment, Lepton
Abstract: Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distribution in the azimuthal angle straight phi of the pion relative to the lepton scattering plane was formed for pi(+) electroproduction on a longitudinally polarized hydrogen target. The corresponding analyzing power in the sinstraight phi moment of the cross section is 0.022+/-0.005+/-0.003. This result can be interpreted as the effect of terms in the cross section involving chiral-odd spin distribution functions in combination with a chiral-odd fragmentation function that is sensitive to the transverse polarization of the fragmenting quark.
Published: 2000

13. Transverse polarization of Λ and Λ̅ hyperons in quasireal photoproduction

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V. V., Andrus, A., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H. P., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Brunn, I., Capitani, G. P., Chiang, H. C., Ciullo, Giuseppe, Contalbrigo, Marco, Court, G. R., Ferretti, Paola, De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, Riccardo, Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L. G., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., W. H. A., Hillenbrand, A., Holler, Y., Hommez, B., Iarygin, G., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, Paolo, Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., N. C. R., Marukyan, H., Masoli, Francesco Antonio, Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W. D., Oganessyan, K., Ohsuga, H., Orlandi, G., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, Davide, Reimer, P. E., Reischl, A., Reolon, A. R., Rith, K., Rosner, G., Rostomyan, A., Ryckbosch, D., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Seitz, B., Shanidze, R., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Stancari, Michelle Dawn, Statera, Marco, Steffens, E., J. J. M., Stewart, J., Stosslein, U., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tessarin, S., Thomas, E., Tkabladze, A., Trzcinski, A., Tytgat, M., Urciuoli, G. M., Van, P. B., van der, G., van de, R., Veretennikov, D., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., Zohrabian, H., and Zupranski, P.
Subjects: 13.88.+e, 13.60.−r, 13.60.Rj
Published: 2007

14. Transverse Polarization of Lambda and Lambda-bar Hyperons in Quasi-Real Photon-Nucleon Scattering at HERMES

Author: Airapetian, A., Akopov, N., Avetissian, E., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W.-D., Oganessyan, K., Bailey, P., Ohsuga, H., Orlandi, G., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Rith, K., Baturin, V., Rosner, G., Rostomyan, A., Ryckbosch, D., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Baumgarten, C., Schwind, A., Seibert, J., Seitz, B., Shanidze, R., Shibata, T.-A., Shutov, V., Simani, M. C., Sinram, K., Stancari, M., Statera, M., Beckmann, M., Steffens, E., Steijger, J. J. M., Stewart, J., Stosslein, U., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tessarin, S., Thomas, E., Belostotski, S., Tkabladze, A., Trzcinski, A., Tytgat, M., Urciuoli, G. M., van der Nat, P. B., van der Steenhoven, G., van de Vyver, R., Veretennikov, D., Vetterli, M. C., Vikhrov, V., Bernreuther, S., Vincter, M. G., Visser, J., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Bianchi, N., Zihlmann, B., Zohrabian, H., Zupranski, P., HERMES Collaboration, Blok, H. P., Bottcher, H., Akopov, Z., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Brunn, I., Capitani, G. P., Chiang, H. C., Ciullo, G., Contalbrigo, M., Court, G. R., Amarian, M., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ammosov, V. V., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Andrus, A., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Aschenauer, E. C., Greeniaus, L. G., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Hillenbrand, A., Augustyniak, W., Holler, Y., Hommez, B., Iarygin, G., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, K., Avakian, R., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Avetissian, A., Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Makins, N. C. R., Marukyan, H., Masoli, F., Menden, F., Mexner, V., and Meyners, N.
Subjects: +Lambda+positron+anything%22">positron nucleon --> Lambda positron anything, longitudinal [polarized target], transverse [polarization], momentum dependence, HERMES, transverse momentum dependence, deep inelastic scattering [positron nucleon], polarized target: longitudinal, polarization: transverse, ddc:530, Nuclear Experiment, Antilambda: polarization, longitudinal [polarized beam], photoproduction [Lambda], 27.6 GeV, High Energy Physics::Phenomenology, Lambda: polarization, Lambda: photoproduction, DESY HERA Stor, positron nucleon: deep inelastic scattering, polarized beam: longitudinal, High Energy Physics::Experiment, polarization [Antilambda], polarization [Lambda], experimental results
Abstract: Physical review / D 76(9), 092008 (2007). doi:10.1103/PhysRevD.76.092008, The HERMES experiment has measured the transverse polarization of Lambda and Lambda-bar hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization of the Lambda hyperon is found to be positive while the observed Lambda-bar polarization is compatible with zero. The transverse polarization values averaged over the kinematic acceptance of HERMES are 0.078 +/- 0.006(stat) +/- 0.012(syst) and -0.025 +/- 0.015(stat) +/- 0.018(syst) for Lambda and Lambda-bar hyperons, respectively. The dependences of Lambda and Lambda-bar polarizations on the fraction $\zeta$ of the beam's light-cone momentum carried by the hyperon and on the hyperon's transverse momentum $p_T$ were investigated. The measured Lambda polarization rises linearly with $p_T$ and exhibits a different behavior for low and high values of $\zeta$, which approximately correspond to the backward and forward regions in the center-of-mass frame of the $\gamma^*N$ reaction., Published by Soc., [S.l.]
Published: 2007

15. Precise Alignment of Magnetic Quadrupole Axes for PETRA III

Author: Krause, B., Petrov, A., Prenting, J., Schloesser, M., and Sinram, K.
Published: 2007

16. Search for an exotic S = -2, Q = -2 baryon resonance at a mass near 1862-MeV in quasi-real photoproduction

Author: Airapetian, A., Akopov, N., Bailey, P., Meyners, N., Michler, T., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Murray, M., Nagaitsev, A., Nappi, E., Naryshkin, Y., Balin, D., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Osborne, A., Pickert, N., Potterveld, D. H., Raithel, M., Reggiani, D., Reimer, P. E., Beckmann, M., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Belostotski, S., Sanjiev, I., Savin, I., Schafer, A., Schnell, G., Schuler, K. P., Seele, J., Seidl, R., Seitz, B., Shearer, C., Shibata, T.-A., Bianchi, N., Shutov, V., Sinram, K., Sommer, W., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stinzing, F., Blok, H. P., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P. B., van der Steenhoven, G., Bottcher, H., van Haarlem, Y., Vikhrov, V., Vincter, M. G., Vogel, C., Volmer, J., Wang, S., Wendland, J., Ye, Y., Ye, Z., Yen, S., Borissov, A., Zihlmann, B., Zupranski, P., HERMES Collaboration, Borysenko, A., Bouwhuis, M., Akopov, Z., Brull, A., Bryzgalov, V., Capiluppi, M., Capitani, G. P., Chen, T., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Deconinck, W., De Leo, R., Amarian, M., Demey, M., De Nardo, L., De Sanctis, E., Devitsin, E., Diefenthaler, M., Di Nezza, P., Drechsler, J., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Andrus, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Felawka, L., Frullani, S., Funel, A., Gapienko, G., Gapienko, V., Aschenauer, E. C., Garibaldi, F., Garrow, K., Gavrilov, G., Gharibyan, V., Giordano, F., Grebeniouk, O., Gregor, I. M., Hadjidakis, C., Hafidi, K., Hartig, M., Augustyniak, W., Hasch, D., Hesselink, W. H. A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Hristova, I., Iarygin, G., Ivanilov, A., Izotov, A., Avakian, R., Jackson, H. E., Jgoun, A., Kaiser, R., Keri, T., Kinney, E., Kisselev, A., Kobayashi, T., Kopytin, M., Korotkov, V., Kozlov, V., Avetissian, A., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L. A., Lorenzon, W., Lu, H., Avetissian, E., Lu, J., Lu, S., Ma, B.-Q., Maiheu, B., Makins, N. C. R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., and Mexner, V.
Subjects: inclusive reaction [positron deuteron], (p 3pi-) [mass spectrum], branching ratio [channel cross section], DESY HERA Stor, 27.5 GeV, search for [pentaquark], ddc:530, exotic [baryon resonance], hadroproduction [Xi(1530)], (p pi+ 2pi-) [mass spectrum], Xi(1862) [postulated particle], upper limit
Abstract: A search for an exotic baryon resonance with $S=-2, Q=-2$ has been performed in quasi-real photoproduction on a deuterium target through the decay channel $\Xi^- \pi^- \to \Lambda \pi^- \pi^- \to p \pi^- \pi^- \pi^-$. No evidence for a previously reported $\Xi^{--}(1860)$ resonance is found in the $\Xi^- \pi^-$invariant mass spectrum. An upper limit for the photoproduction cross section of 2.1 nb is found at the 90% confidence level. The photoproduction cross section for the $\Xi^{0}(1530)$ is found to be between 9 and 24 nb.
Published: 2005

17. First measurement of the tensor structure function $b_1$ of the deuteron

Author: Airapetian, A., Akopov, N., Avetissian, E., Makins, N. C. R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Bailey, P., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Pickert, N., Balin, D., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Baturin, V., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Schafer, A., Schill, C., Schnell, G., Beckmann, M., Schuler, K. P., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.-A., Shutov, V., Simani, M. C., Sinram, K., Belostotski, S., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stinzing, F., Stosslein, U., Tait, P., Tanaka, H., Bernreuther, S., Taroian, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P. B., van der Steenhoven, G., Vetterli, M. C., Bianchi, N., Vikhrov, V., Vincter, M. G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Ye, Y., Ye, Z., Blok, H. P., Yen, S., Zihlmann, B., Zupranski, P., HERMES Collaboration, Bottcher, H., Akopov, Z., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chen, T., Chiang, H. C., Ciullo, G., Amarian, M., Contalbrigo, M., Dalpiaz, P. F., Leo, R. De, Demey, M., Nardo, L. De, Sanctis, E. De, Devitsin, E., Nezza, P. Di, Dreschler, J., Duren, M., Ammosov, V. V., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Andrus, A., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Aschenauer, E. C., Grebeniouk, O., Greeniaus, L. G., Gregor, I. M., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Augustyniak, W., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Avakian, R., Kinney, E., Kisselev, A., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Avetissian, A., Lenisa, P., Liebing, P., Linden-Levy, L. A., Lipka, K., Lorenzon, W., Lu, H., Lu, J., Lu, S., Ma, B.-Q., and Maiheu, B.
Subjects: DESY HERA Stor, 27.6 GeV/c, structure function [deuteron], deep inelastic scattering [positron deuteron], asymmetry [polarization], ddc:550, tensor [polarization], HERMES, moment [structure function], polarized target [deuteron], momentum transfer dependence, x-dependence, experimental results
Published: 2005

18. Quark helicity distributions in the nucleon for up, down, and strange quarks from semi-inclusive deep-inelastic scattering

Author: Airapetian, A., Akopov, N., Avetissian, E., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Bailey, P., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W. D., Oganessyan, K., Ohsuga, H., Pickert, N., Potashov, S., Potterveld, D. H., Baturin, V., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Baumgarten, C., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Beckmann, M., Schwind, A., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Belostotski, S., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Bernreuther, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M. C., Vikhrov, V., Bianchi, N., Vincter, M. G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Ybeles Smit, G., Yen, S., Zihlmann, B., Blok, H. P., Zohrabian, H., Zupranski, P., HERMES Collaboration, Blumlein, J., Akopov, Z., Bottcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chiang, H. C., Ciullo, G., Amarian, M., Contalbrigo, M., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Ammosov, V. V., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Andrus, A., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Aschenauer, E. C., Grebeniouk, O., Greeniaus, L. G., Gregor, I. M., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Augustyniak, W., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Avakian, R., Kinney, E., Kisselev, A., Konigsmann, K., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, Louk, Avetissian, A., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Linden-Levy, L. A., Lipka, K., Lorenzon, W., Lu, J., Maiheu, B., Makins, N. C. R., (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Quark, internal [polarized target], Nuclear and High Energy Physics, Particle physics, Strange quark, sea [quark], High Energy Physics::Lattice, deep inelastic scattering [positron deuteron], Hadron, Nuclear Theory, dependence [flavor], Down quark, FOS: Physical sciences, HERMES, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), density [helicity], 27.5 GeV, Pion, 0103 physical sciences, ddc:530, SDG 14 - Life Below Water, deep inelastic scattering [positron p], 010306 general physics, electroproduction [pi], Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, polarization [quark], Deep inelastic scattering, moment, Baryon, DESY HERA Stor, electroproduction [K], Up quark, valence [quark], polarization [cross section], High Energy Physics::Experiment, polarized beam [positron], asymmetry [spin], experimental results
Abstract: Polarized deep-inelastic scattering data on longitudinally polarized hydrogen and deuterium targets have been used to determine double-spin asymmetries of cross sections. Inclusive and semi-inclusive asymmetries for the production of positive and negative pions from hydrogen were obtained in a reanalysis of previously published data. Inclusive and semi-inclusive asymmetries for the production of negative and positive pions and kaons were measured on a polarized deuterium target. The separate helicity densities for the up and down quarks and the anti-up, anti-down, and strange sea quarks were computed from these asymmetries in a "leading order" QCD analysis. The polarization of the up-quark is positive and that of the down-quark is negative. All extracted sea quark polarizations are consistent with zero, and the light quark sea helicity densities are flavor symmetric within the experimental uncertainties. First and second moments of the extracted quark helicity densities in the measured range are consistent with fits of inclusive data. © 2005 The American Physical Society.
Published: 2005

19. Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

Author: Airapetian, A., Akopov, N., Bacchetta, A., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W. D., Bailey, P., Oganessyan, K., Ohsuga, H., Osborne, A., Pickert, N., Potterveld, D. H., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Balin, D., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, Igor A., Beckmann, M., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T. A., Belostotski, S., Shutov, V., Sinram, K., Sommer, W., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stinzing, F., Bianchi, N., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P. B., van der Steenhoven, G., Blok, H. P., van Haarlem, Y., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Vogel, C., Volmer, J., Wang, S., Wendland, J., Wilbert, J., Ybeles Smit, G., Bottcher, H., Ye, Y., Ye, Z., Yen, S., Zihlmann, B., Zupranski, P., HERMES Collaboration, Borissov, A., Borysenko, A., Akopov, Z., Bouwhuis, M., Brull, A., Bryzgalov, V., Capitani, G. P., Cappiluppi, M., Chen, T., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., De Leo, R., Amarian, M., Demey, M., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Andrus, A., Elschenbroich, U., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Aschenauer, E. C., Gavrilov, G., Gharibyan, V., Grebeniouk, O., Gregor, I. M., Hadjidakis, C., Hafidi, K., Hartig, M., Hasch, D., Henoch, M., Hesselink, W. H. A., Augustyniak, W., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Hristova, I., Iarygin, G., Ilyichev, A., Ivanilov, A., Izotov, A., Jackson, H. E., Avakian, R., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kobayashi, T., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Avetissian, A., Lagamba, L., Lapikas, Louk, Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L. A., Lorenzon, W., Lu, H., Lu, J., Lu, S., Avetissian, E., Ma, B. Q., Maiheu, B., Makins, N. C. R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Michler, T., (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Particle physics, transverse [polarization], Nuclear Theory, FOS: Physical sciences, General Physics and Astronomy, HERMES, 13.60.–r, Inelastic scattering, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 27.5 GeV, Pion, 13.88.+e, ddc:550, Vector meson, SDG 14 - Life Below Water, deep inelastic scattering [positron p], 14.20.Dh, 14.65.–q, Nuclear Experiment, Physics, Scattering, polarized target [hydrogen], High Energy Physics::Phenomenology, polarization [quark], Deep inelastic scattering, +pi+positron+anything%22">positron p --> pi positron anything, angular dependence, DESY HERA Stor, Distribution function, High Energy Physics::Experiment, transverse momentum [quark], Nucleon, electroproduction [pi+], asymmetry [spin], electroproduction [pi-], Lepton, experimental results
Abstract: Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion ($\ensuremath{\phi}$) and the target spin axis (${\ensuremath{\phi}}_{S}$) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component $\mathbf{⟨}\mathrm{sin} (\ensuremath{\phi}+{\ensuremath{\phi}}_{S}){\mathbf{⟩}}_{UT}^{\ensuremath{\pi}}$ is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component $\mathbf{⟨}\mathrm{sin} (\ensuremath{\phi}\ensuremath{-}{\ensuremath{\phi}}_{S}{\mathbf{⟩}}_{UT}^{\ensuremath{\pi}}$ arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.
Published: 2005

20. Search for an exotic S =-2, Q =-2 baryon resonance at a mass near 1862 MeV in quasireal photoproduction

Author: Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Andrus, A, Aschenauer, Ec, Augustyniak, W, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Balin, D, Beckmann, M, Belostotski, S, Bianchi, N, Blok, Hp, Bottcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brull, A, Bryzgalov, V, Capiluppi, Marco, Capitani, Gp, Chen, T, Ciullo, Giuseppe, Contalbrigo, Marco, Ferretti, Paola, Deconinck, W, DE LEO, R, Demey, M, DE NARDO, L, DE SANCTIS, E, Devitsin, E, Diefenthaler, M, DI NEZZA, P, Drechsler, J, Duren, M, Ehrenfried, M, ELALAOUI MOULAY, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Fabbri, R, Fantoni, A, Felawka, L, Frullani, S, Funel, A, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Gavrilov, G, Gharibyan, V, Giordano, Francesca, Grebeniouk, O, Gregor, Im, Hadjidakis, C, Hafidi, K, Hartig, M, Hasch, D, Hesselink, Wha, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Hristova, I, Iarygin, G, Ivanilov, A, Izotov, A, Jackson, He, Jgoun, A, Kaiser, R, Keri, T, Kinney, E, Kisselev, A, Kobayashi, T, Kopytin, M, Korotkov, V, Kozlov, V, Krauss, B, Krivokhijine, Vg, Lagamba, L, Lapikas, L, Laziev, A, Lenisa, Paolo, Liebing, P, LINDEN LEVY LA, Lorenzon, W, Lu, H, Lu, J, Lu, S, Ma, Bq, Maiheu, B, Makins, Ncr, Mao, Y, Marianski, B, Marukyan, H, Masoli, Francesco Antonio, Mexner, V, Meyners, N, Michler, T, Mikloukho, O, Miller, Ca, Miyachi, Y, Muccifora, V, Murray, M, Nagaitsev, A, Nappi, E, Naryshkin, Y, Negodaev, M, Nowak, Wd, Oganessyan, K, Ohsuga, H, Osborne, A, Pickert, N, Potterveld, Dh, Raithel, M, Reggiani, D, Reimer, Pe, Reischl, A, Reolon, Ar, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubacek, L, Rubin, J, Ryckbosch, D, Salomatin, Y, Sanjiev, I, Savin, I, Schafer, A, Schnell, G, Schuler, Kp, Seele, J, Seidl, R, Seitz, B, Shearer, C, Shibata, Ta, Shutov, V, Sinram, K, Sommer, W, Stancari, Michelle Dawn, Statera, Marco, Steffens, E, Steijger, Jjm, Stenzel, H, Stewart, J, Stinzing, F, Tait, P, Tanaka, H, Taroian, S, Tchuiko, B, Terkulov, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, VAN DER NAT PB, VAN DER STEENHOVEN, G, VAN HAARLEM, Y, Vikhrov, V, Vincter, Mg, Vogel, C, Volmer, J, Wang, S, Wendland, J, Ye, Y, Ye, Z, Yen, S, Zihlmann, B, and Zupranski, P.
Subjects: 14.20.–c, 12.39.Mk, 13.60.–r, 13.60.Rj, NO
Published: 2005

21. The deuteron break-up induced by α-particles

Author: Anders, B., Berghaus, U., Brückmann, H., Körber, G., Lara, P., Pegel, C., Salehi, H., Sinram, K., Wick, K., Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Zittartz, J., editor, Beiglböck, W., editor, Zingl, H., editor, Haftel, M., editor, and Zankel, H., editor
Published: 1978
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22. Nuclear polarization of molecular hydrogen recombined on a non-metallic surface

Author: Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Ammosov, Vv, Andrus, A, Aschenauer, Ec, Augustymak, W, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Baturin, V, Baumgarten, C, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Blok, Hp, Bottcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brack, J, Brull, A, Bryzgalov, V, Capitanilo, Gp, Chiang, Hc, Ciullo, Giuseppe, Contalbrigo, Marco, Court, G, Ferretti, Paola, DE LEO, R, DE NARDO, L, DE SANCTIS, E, Devitsin, E, DI NEZZA, P, Duren, M, Ehrenfried, M, ELALAOUI MOULAY, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Ely, J, Fabbri, Riccardo, Fantoni, A, Fechtchenko, A, Felawka, L, Fox, B, Franz, J, Frullani, S, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Garutti, E, Gaskell, D, Gavrilov, G, Gharibyan, V, Graw, G, Grebeniouk, O, Greeniaus, Lg, Gregor, Im, Haeberli, W, Hafidi, K, Hartig, M, Hasch, D, Heesbeen, D, Henoch, M, Hertenberger, R, Hesselink, Wha, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Iarygin, G, Ivanilov, A, Izotov, A, Jackson, He, Jgoun, A, Kaiser, R, Kinney, E, Kisselev, A, Kolster, H, Konigsmann, K, Kopytin, M, Korotkov, V, Kozlov, V, Krauss, B, Krivokhijine, Vg, Lagamba, L, Lapikas, L, Laziev, A, Lenisa, Paolo, Liebing, P, LINDEN LEVY LA, Lipka, K, Lorenzon, W, Lu, J, Maiheu, B, Makins, Ncr, Marianski, B, Marukyan, H, Masoli, Francesco Antonio, Mexner, V, Meyners, N, Mikloukho, O, Miller, Ca, Miyachi, Y, Muccifora, V, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Negodaev, M, Nowak, Wd, Oganessyan, K, Ohsuga, H, Pickert, N, Potashov, S, Potterveld, Dh, Raithel, M, Reggiani, Davide, Reimer, Pe, Reischl, A, Reolon, Ar, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubacek, L, Rubin, J, Ryckbosch, D, Salomatin, Y, Sanjiev, I, Savin, I, Scarlett, C, Schill, C, Schnell, G, Schuler, Kp, Schwind, A, Seele, J, Seidl, R, Seitz, B, Shanidze, R, Shearer, C, Shibata, Ta, Shutov, V, Simani, Mc, Sinram, K, Stancari, Michelle Dawn, Statera, Marco, Steffens, E, Steijger, Jjm, Stenzel, H, Stewart, J, Stosslein, U, Tait, P, Tanaka, H, Taroian, S, Tchuiko, B, Terkulov, A, Tkabladze, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, VAN DER NAT, P, VAN DER STEENHOVEN, G, Vetterli, Mc, Vikhrov, V, Vincter, Mg, Vogel, C, Vogt, M, (Astro)-Particles Physics, Photo Conversion Materials, Student Lab and Education, and Airapetian, A
Subjects: Silicon, Atomic Physics (physics.atom-ph), media_common.quotation_subject, Nuclear Theory, chemistry.chemical_element, FOS: Physical sciences, Asymmetry, Physics - Atomic Physics, Metal, Physics - Chemical Physics, 29.25.Pj - Polarized and other targets, 34. - Atomic and molecular collision processes and interactions, 39.10.+j - Atomic and molecular beam sources and techniques, 13.88.+e - Polarization in interactions and scattering, Molecule, Nuclear Experiment, media_common, chemistry.chemical_classification, Physics, Chemical Physics (physics.chem-ph), Scattering, Polymer, Polarization (waves), Atomic and Molecular Physics, and Optics, chemistry, visual_art, visual_art.visual_art_medium, Atomic physics, Recombination
Abstract: The nuclear polarization of $\mathrm{H}_2$ molecules formed by recombination of nuclear polarized H atoms on the surface of a storage cell initially coated with a silicon-based polymer has been measured by using the longitudinal double-spin asymmetry in deep-inelastic positron-proton scattering. The molecules are found to have a substantial nuclear polarization, which is evidence that initially polarized atoms retain their nuclear polarization when absorbed on this type of surface
Published: 2004

23. Hard exclusive electroproduction of π+π− pairs

Author: Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Ammosov, Vv, Andrus, A, Aschenauer, Ec, Augustyniak, W, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Balin, D, Baturin, V, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Blok, Hp, Bottcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brack, J, Brull, A, Bryzgalov, V, Capitani, Gp, Chen, T, Ciullo, Giuseppe, Contalbrigo, Marco, Ferretti, Paola, DE LEO, R, Demey, M, DE NARDO, L, DE SANCTIS, E, Devitsin, E, DI NEZZA, P, Duren, M, Ehrenfried, M, ELALAOUI MOULAY, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Fabbri, Riccardo, Fantoni, A, Fechtchenko, A, Felawka, L, Frullani, S, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Garutti, E, Gavrilov, G, Gharibyan, V, Graw, G, Grebeniouk, O, Greeniaus, Lg, Gregor, Im, Griffioen, Ka, Hafidi, K, Hartig, M, Hasch, D, Heesbeen, D, Henoch, M, Hertenberger, R, Hesselink, Wha, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Iarygin, G, Ivanilov, A, Izotov, A, Jackson, He, Jgoun, A, Kaiser, R, Kinney, E, Kisselev, A, Kopytin, M, Korotkov, V, Kozlov, V, Krauss, B, Krivokhijine, Vg, Lagamba, L, Lapikas, L, Laziev, A, Lenisa, Paolo, Liebing, P, LINDEN LEVY LA, Lipka, K, Lorenzon, W, Lu, H, Lu, J, Lu, S, Ma, Bq, Maiheu, B, Makins, Ncr, Mao, Y, Marianski, B, Marukyan, H, Masoli, Francesco Antonio, Mexner, V, Meyners, N, Mikloukho, O, Miller, Ca, Miyachi, Y, Muccifora, V, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Negodaev, M, Nowak, Wd, Oganessyan, K, Ohsuga, H, Osborne, A, Pickert, N, Potashov, S, Potterveld, Dh, Raithel, M, Reggiani, Davide, Reimer, Pe, Reischl, A, Reolon, Ar, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubacek, L, Rubin, J, Ryckbosch, D, Salomatin, Y, Sanjiev, I, Savin, I, Schafer, A, Schill, C, Schnell, G, Schuler, Kp, Seele, J, Seidl, R, Seitz, B, Shanidze, R, Shearer, C, Shibata, Ta, Shutov, V, Sinram, K, Sommer, W, Stancari, Michelle Dawn, Statera, Marco, Steffens, E, Steijger, Jjm, Stenzel, H, Stewart, J, Stinzing, F, Tait, P, Tanaka, H, Taroian, S, Tchuiko, B, Terkulov, A, Tkabladze, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, VAN DER NAT, P, VAN DER STEENHOVEN, G, VAN HAARLEM, Y, Vetterli, Mc, Vikhrov, V, Vincter, Mg, Vogel, C, Vogt, M, Volmer, J, Weiskopf, C, and W. E. N. D. L. A. N. D. .
Subjects: 14.40.Cs, 13.88.+e, 13.60.Le, 25.30.Rw
Published: 2004

24. Flavor decomposition of the sea quark helicity distributions in the nucleon from semiinclusive deep inelastic scattering

Author: Airapetian, A., Akopov, N., Avetissian, E., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Bailey, P., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Orlandi, G., Pickert, N., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, D., Baturin, V., Reimer, P. E., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Ryckbosch, D., Salomatin, Y., Baumgarten, C., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Schwind, A., Seele, J., Seidl, R., Beckmann, M., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.-A., Shutov, V., Simani, M. C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Belostotski, S., Steijger, J. J. M., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Bernreuther, S., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Vogel, C., Vogt, M., Bianchi, N., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Ybeles Smit, G., Yen, S., Zihlmann, B., Zohrabian, H., Zupranski, P., HERMES Collaboration, Blok, H. P., Bottcher, H., Akopov, Z., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chiang, H. C., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Amarian, M., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Ammosov, V. V., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Garber, Y., Andrus, A., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Aschenauer, E. C., Greeniaus, L. G., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Hillenbrand, A., Hoek, M., Augustyniak, W., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Avakian, R., Konigsmann, K., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Avetissian, A., Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Lu, J., Maiheu, B., Makins, N. C. R., Marianski, B., Marukyan, H., and Masoli, F.
Subjects: sea [quark], momentum spectrum [quark], High Energy Physics::Lattice, deep inelastic scattering [positron deuteron], Nuclear Theory, HERMES, absorption [photon], x-dependence, inclusive reaction [positron deuteron], helicity [quark], ddc:550, Nuclear Experiment, 27.6 GeV, High Energy Physics::Phenomenology, DESY HERA Stor, electroproduction [K+], electroproduction [K-], flavor [quark], High Energy Physics::Experiment, asymmetry [flavor], polarized beam [positron], polarized target [deuteron], electroproduction [pi+], asymmetry [spin], electroproduction [pi-], experimental results
Abstract: Double-spin asymmetries of semi-inclusive cross sections for the production of identified pions and kaons have been measured in deep-inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with re-analyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data.
Published: 2004

25. Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Balin, D., Baturin, V., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G.P., Chen, T., Chen, X., Chiang, H.C., Ciullo, G., Contalbrigo, M., Dalpiaz, P.F., Deconinck, W., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, Y., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L.G., Gregor, I.M., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L.A., Lipka, K., Lorenzon, W., Lu, H., Lu, J., Lu, S., Lu, X., Ma, B.Q., Maiheu, B., Makins, N.C.R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.D., Oganessyan, K., Ohsuga, H., Pickert, N., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Schafer, A., Schill, C., Schnell, G., Schuler, K.P., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.A., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stinzing, F., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terklov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Smit, G.Y., Ye, Y., Ye, Z., Yen, Z., Yu, W., Zihlmann, B., Zohrabian, H., and Zupranski, P.
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract: Evidence for a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel pK(S)(0) → ppi(+)pi(-). A peak is observed in the pK(S)(0) invariant mass spectrum at 1528 +/- 2.6(stat) +/- 2.1(syst) MeV. Depending on the background model, the naive statistical significance of the peak is 4-6 standard deviations and its width may be somewhat larger than the experimental resolution of sigma = 4.3-6.2 MeV. This state may be interpreted as the predicted S = +1 exotic Theta(+)(uudd (s) over bar) pentaquark baryon. No signal for an hypothetical Theta(++) baryon was observed in the pK(+) invariant mass distribution. The absence of such a signal indicates that an isotensor Theta is excluded and an isovector Theta is unlikely.
Published: 2004

26. Nuclear polarization of molecular hydrogen recombined on a non-metallic surface

Author: Airapetian, A., Akopov, N., Avetissian, E., Makins, N. C. R., Marianski, B., Marukian, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Bailey, P., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W. D., Oganessyan, K., Ohsuga, H., Pickert, N., Potashov, S., Baturin, V., Potterveld, David H., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomian, A., Baumgarten, C., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, Igor A., Scarlett, C., Schill, C., Schnell, G., Schuler, K. P., Beckmann, M., Schwind, A., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Belostotsky, S., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Bernreuther, S., Chuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M. C., Vikhrov, V., Bianchi, N., Vincter, M. G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Ybeles Smit, G., Zihlmann, B., Blok, H. P., Zohrabian, H., Zupranski, P., HERMES Collaboration, Bottcher, H., Akopov, Z., Borissov, A., Borisenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chiang, H. C., Ciullo, G., Contalbrigo, M., Amarian, M., Court, G., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Ammosov, V. V., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Feshchenko, A., Felawka, L., Fox, B., Franz, J., Andrus, A., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Aschenauer, E. C., Grebenyuk, O., Greeniaus, L. G., Gregor, I. M., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Augustyniak, W., Hesselink, W. H. A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Yarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Avakian, R., Kaiser, R., Kinney, E., Kiselev, A., Kolster, H., Konigsmann, Kay, Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhizhin, V. G., Avetissian, A., Lagamba, L., Lapikas, Louk, Laziev, A., Lenisa, P., Liebing, P., Linden-Levy, L. A., Lipka, K., Lorenzon, W., Lu, J., and Maiheu, B.
Subjects: fabrication [polarized target], DESY HERA Stor, 13.88.+e, molecule [hydrogen], polarized target [hydrogen], 39.10.+j, measurement [polarization], 34.09.+q, ddc:530, silicon [plastics], HERMES, surface [plastics], 29.25.P
Abstract: The nuclear polarization of ${\rm H}_2$ molecules formed by recombination of nuclear polarized H atoms on
Published: 2004
Full Text: View/download PDF

27. The deuteron break-up induced by α-particles

Author: Anders, B., primary, Berghaus, U., additional, Brückmann, H., additional, Körber, G., additional, Lara, P., additional, Pegel, C., additional, Salehi, H., additional, Sinram, K., additional, and Wick, K., additional
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28. Double-spin asymmetries in the cross section of rho /sup 0/ and phi production at intermediate energies

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G.P., Chiang, H.C., Ciullo, G., Contalbrigo, M., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L.G., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Maiheu, B., Makins, N.C.R., Marianski, B., Marukyan, H., Masoli, F., Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W.D., Oganessyan, K., Ohsuga, H., Orlandi, G., Pickert, N., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P., Reischl, A., Reolon, A.R., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K.P., Schwind, A., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.A., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Thomas, E., Tkabladze, A., Trzcinski, A., Tytgat, M., Urciuoli, G.M., van der Nat, P., van der Steenhoven, G., Van de Vyver, R., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., Zohrabian, H., and Zupranski, P.
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract: Double-spin asymmetries in the cross section of electroproduction of rho /sup 0/ and phi mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in exclusive rho /sup 0/ electroproduction on the proton exhibits a positive tendency. This is consistent with theoretical predictions that the exchange of an object with unnatural parity contributes to exclusive rho /sup 0/ electroproduction by transverse photons. The photoabsorption asymmetry on the deuteron is found to be consistent with zero. Double-spin asymmetries in rho /sup 0/ and phi meson electroproduction by quasireal photons were also found to be consistent with zero; the asymmetry in the case of the phi meson is compatible with a theoretical prediction which involves ss knockout from the nucleon.
Published: 2003

29. Evidence for quark-hadron duality in the proton spin asymmetry A1

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Bouhali, O., Bouwhuis, M., Brack, J., Brauksiepe, S., Brull, A., Brunn, I., Bulten, H.J., Capitani, G.P., Cisbani, E., Ciullo, G., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Witt Huberts, P.K.A., Di Nezza, P., Duren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Filippone, B.W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, V., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Gute, A., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F.H., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hofman, G., Holler, Y., Holt, R.J., Hommez, B., Iarygin, G., Izotov, A., Jackson, H.E., Jgoun, A., Jung, P., Kaiser, R., Kinney, E., Kisselev, A., Kitching, P., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kotik, E., Kozlov, V., Krauss, B., Krivokhijine, V.G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lorenzon, W., Maas, A., Makins, N.C.R., Marukyan, H., Masoli, F., Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W.D., Oganessyan, K., Orlandi, G., Podiatchev, S., Potashov, S., Potterveld, D.H., Raithel, M., Rappoport, V., Reggiani, D., Reimer, P., Reischl, A., Reolon, A.R., Rith, K., Rostomyan, A., Ryckbosch, D., Sakemi, Y., Sanjiev, I., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., SChmidt, F., Schnell, G., Schuler, K.P., Schwind, A., Seibert, J., Seitz, B., Shanidze, R., Shibata, T.A., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Suetsugu, K., Taroian, S., Terkulov, A., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G.M., van den Brand, J.F.J., van der Steenhoven, G., Van de Vyver, R., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., and Zohrabian, H.
Subjects: High Energy Physics::Experiment, QC
Abstract: Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q2 between 1.2 and 12 GeV2 and values of W2 between 1 and 4 GeV/2. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x. This finding implies that the description of A1 in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of Q2 above 1.6 GeV2.
Published: 2003

30. Double-spin asymmetries in the cross section of rho(0) and phi production at intermediate energies

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V. V., Andrus, A., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H. P., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chiang, H. C., Ciullo, Giuseppe, Contalbrigo, Marco, Court, G. R., Ferretti, Paola, De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, Riccardo, Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L. G., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Hillenbrand, A., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, Kay C., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, Paolo, Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Maiheu, B., Makins, N. C. R., Marianski, B., Marukyan, H., Masoli, Francesco Antonio, Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W. D., Oganessyan, K., Ohsuga, H., Orlandi, G., Pickert, N., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, Davide, Reimer, P., Reischl, A., Reolon, A. R., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, Igor A., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Schwind, A., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Stancari, Michelle Dawn, Statera, Marco, Steffens, E., Steijger, J. J. M., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Thomas, E., Tkabladze, A., Trzcinski, A., Tytgat, M., Urciuoli, G. M., van der Nat, P., van der Steenhoven, G., van de Vyver, R., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., Zohrabian, H., Zupranski, P., and (Astro)-Particles Physics
Subjects: HERMES experiment, Particle physics, Photon, Physics and Astronomy (miscellaneous), Meson, media_common.quotation_subject, Nuclear Theory, rho(770) electroproduction, electron p inelastic scattering, electron deuteron inelastic scattering, electron polarized beam, polarized target, Phi(1020) electroproduction, spin asymmetry, x-dependence, momentum transfer dependence, transverse momentum dependence, quark strangeness, quark sea, pomeron exchange, magnetic spectrometer, HERMES experimental results, DESY HERA Stored 27.5 GeV, 01 natural sciences, 7. Clean energy, Asymmetry, High Energy Physics - Experiment, 0103 physical sciences, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), media_common, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Parity (physics), 3. Good health, Deuterium, High Energy Physics::Experiment, Nucleon
Abstract: Double-spin asymmetries in the cross section of electroproduction of $\rho^0$ and $\phi$ mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in exclusive $\rho^0$ electroproduction on the proton exhibits a positive tendency. This is consistent with theoretical predictions that the exchange of an object with unnatural parity contributes to exclusive $\rho^0$ electroproduction by transverse photons. The photoabsorption asymmetry on the deuteron is found to be consistent with zero. Double-spin asymmetries in $\rho^0$ and $\phi $ meson electroproduction by quasi-real photons were also found to be consistent with zero; the asymmetry in the case of the $\phi$ meson is compatible with a theoretical prediction which involves $s\bar{s}$ knockout from the nucleon., Comment: 8 pages, 7 figures
Published: 2003

31. Quark fragmentation to pi(+/-), pi(0), K-+/-, p and (p)over-bar in the nuclear environment

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G.P., Chiang, H.C., Ciullo, G., Contalbrigo, M., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Santis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L.G., Gregor, I.M., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, K., Kopytin, M., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Lu, J., Maiheu, B., Makins, N.C.R., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.D., Oganessyan, K., Ohsuga, H., Pickert, N., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K.P., Schwind, A., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T.A., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Smit, G.Y., Yen, S., Zihlmann, B., Zohrabian, H., and Zupranski, P.
Subjects: High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract: The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi- inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (pi(+), pi(-), pi(0), K+, K-, p and (p) over bar) as a function of the virtual photon energy v, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared p(t)(2). The multiplicity ratio is strongly reduced in the nuclear medium at low v and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high p(t)(2) in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.
Published: 2003

32. The Q(2)-dependence of the generalised Gerasimov-Drell-Hearn integral for the deuteron, proton and neutron

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Bouhali, O., Bouwhuis, M., Brack, J., Brauksiepe, S., Brull, A., Brunn, I., Capitani, G.P., Chiang, H.C., Ciullo, G., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Gute, A., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F.H., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Holler, Y., Hommez, B., Iarygin, G., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R, Kinney, E., Kisselev, A., Kitching, P., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kotik, E., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lipka, K., Lorenzon, W., Makins, N.C.R., Marukyan, H., Masoli, F., Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W.D., Oganessyan, K., Ohsuga, H., Orlandi, G., Podiatchev, S., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reisch, A., Reolon, A.R., Rith, K., Rosner, G., Rostomyan, A., Ryckbosch, D., Sanjiev, I., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K.P., Schwind, A., Seibert, J., Seitz, B., Shanidze, R., Shibata, T.A., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Suetsugu, K., Tanaka, H., Taroian, S., Terkulov, A., Teryaev, O., Tessarin, S., Thomas, E., Tkabladze, A., Tytgat, M., Urciuoli, G.M., van der Nat, P., van der Steenhoven, G., Van de Vyver, R., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., Zohrabian, H., and Zupranski, P.
Subjects: Nuclear Theory, Nuclear Experiment, QC
Abstract: The Gerasimov-Drell-Hearn (GDH) sum rule connects the anomalous contribution to the magnetic moment of the target nucleus with an energy-weighted integral of the difference of the helicity- dependent photoabsorption cross sections. Originally conceived for real photons, the GDH integral can be generalised to the case of photons with virtuality Q(2). For spin-1/2 targets such as the nucleon, it then represents the non-perturbative limit of the first moment Gamma(1) of the spin structure function g(1)(x,Q(2)) in deep inelastic scattering (DIS). The data collected by HERMES with a deuterium target are presented together with a re-analysis of previous measurements on the proton. This provides an unprecedented and complete measurement of the generalised GDH integral for photon-virtuality ranging over 1.2 lt Q(2) lt 12.0 GeV2 and for photon-nucleon invariant mass squared W-2 ranging over I lt W2 lt 45 GeV2. thus covering simultaneously the nucleon-resonance and the deep inelastic scattering regions. These data allow the study of the Q(2)- dependence of the full GDH integral, which is sensitive to both the Q(2)-evolution of the resonance form factors and contributions of higher twist. The contribution of the nucleon- resonance region is seen to decrease rapidly with increasing Q(2). The DIS contribution is sizeable over the full measured range, even down to the lowest measured Q(2). As expected, at higher Q(2) the data are found to be in agreement with previous measurements of the first moment of g(1). From data on the deuteron and proton, the GDH integral for the neutron has been derived and the proton-neutron difference evaluated. This difference is found to satisfy the fundamental Bjorken sum rule at Q(2) = 5 GeV2.
Published: 2003

33. Nuclear effects on R = sigma(L)/sigma(T) in deep-inelastic scattering (vol 475, pg 386, 2000)

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V. V., Aschenauer, E. C., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H. P., Bottcher, H., Borissov, A., Bouhali, O., Bouwhuis, M., Brack, J., Brauksiepe, S., Brull, A., Brunn, I., Capitani, G. P., Chiang, H. C., Ciullo, Giuseppe, Court, G. R., Ferretti, Paola, Leo, R. D., Nardo, L. D., Sanctis, E. D., Devitsin, E., P. K. A., Nezza, P. D., Duren, M., Ehrenfried, M., Elalaoui Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, Riccardo, Fantoni, A., Fechtchenko, A., Felawka, L., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Gute, A., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F. H., Henoch, M., Hertenberger, R., W. H. A., Holler, Y., Hommez, B., Iarygin, G., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kitching, P., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kotik, E., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, Paolo, Liebing, P., Lindemann, T., Lorenzon, W., N. C. R., Marukyan, H., Masoli, Francesco Antonio, Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W. D., Oganessyan, K., Ohsuga, H., Orlandi, G., Podiatchev, S., Potashov, S., Potterveld, D. H., Raithel, M., Reggiani, Davide, Reimer, P. E., Reischl, A., Reolon, A. R., Rith, K., Rosner, G., Rostomyan, A., Ryckbosch, D., Sakemi, Y., Sanjiev, I., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Seitz, B., Shanidze, R., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Stancari, Michelle Dawn, Statera, Marco, Steffens, E., J. J. M., Stewart, J., Stosslein, U., Suetsugu, K., Tanaka, H., Taroian, S., Terkulov, A., Tessarin, S., Thomas, E., Tkabladze, A., Tytgat, M., Urciuoli, G. M., Der, G. v., R. v., De, Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., and Zohrabian, H.
Subjects: ELECTRON-SCATTERING, DEPENDENCE, MUON SCATTERING, STRUCTURE-FUNCTION RATIOS, R=SIGMA-L/SIGMA-T
Published: 2003

34. The Q(2)-dependence of the generalised Gerasimov-Drell-Hearn integral for the deuteron, proton and neutron

Author: Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Ammosov, Vv, Aschenauer, Ec, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Baturin, V, Baumgarten, C, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Blok, Hp, Bottcher, H, Borissov, A, Bouhali, O, Bouwhuis, M, Brack, J, Brauksiepe, S, Brull, A, Brunn, I, Capitani, Gp, Chiang, Hc, Ciullo, Giuseppe, Court, Gr, Ferretti, Paola, DE LEO, R, DE NARDO, L, DE SANCTIS, E, Devitsin, E, DI NEZZA, P, Duren, M, Ehrenfried, M, ELALAOUI MOULAY, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Ely, J, Fabbri, Riccardo, Fantoni, A, Fechtchenko, A, Felawka, L, Fischer, H, Fox, B, Franz, J, Frullani, S, Garber, Y, Gapienko, G, Gapienko, V, Garibaldi, F, Garutti, E, Gavrilov, G, Gharibyan, V, Graw, G, Grebeniouk, O, Green, Pw, Greeniaus, Lg, Gute, A, Haeberli, W, Hafidi, K, Hartig, M, Hasch, D, Heesbeen, D, Heinsius, Fh, Henoch, M, Hertenberger, R, Hesselink, Wha, Hillenbrand, A, Holler, Y, Hommez, B, Iarygin, G, Izotov, A, Jackson, He, Jgoun, A, Kaiser, R, Kinney, E, Kisselev, A, Kitching, P, Konigsmann, K, Kolster, H, Kopytin, M, Korotkov, V, Kotik, E, Kozlov, V, Krauss, B, Krivokhijine, Vg, Lagamba, L, Lapikas, L, Laziev, A, Lenisa, Paolo, Liebing, P, Lindemann, T, Lipka, K, Lorenzon, W, Makins, Ncr, Marukyan, H, Masoli, Francesco Antonio, Menden, F, Mexner, V, Meyners, N, Mikloukho, O, Miller, Ca, Miyachi, Y, Muccifora, V, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Nowak, Wd, Oganessyan, K, Ohsuga, H, Orlandi, G, Podiatchev, S, Potashov, S, Potterveld, Dh, Raithel, M, Reggiani, Davide, Reimer, Pe, Reisch, A, Reolon, Ar, Rith, K, Rosner, G, Rostomyan, A, Ryckbosch, D, Sanjiev, I, Sato, F, Savin, I, Scarlett, C, Schafer, A, Schill, C, Schnell, G, Schuler, Kp, Schwind, A, Seibert, J, Seitz, B, Shanidze, R, Shibata, Ta, Shutov, V, Simani, Mc, Sinram, K, Stancari, Michelle Dawn, Statera, Marco, Steffens, E, Steijger, Jjm, Stewart, J, Stosslein, U, Suetsugu, K, Tanaka, H, Taroian, S, Terkulov, A, Teryaev, O, Tessarin, S, Thomas, E, Tkabladze, A, Tytgat, M, Urciuoli, Gm, VAN DER NAT, P, VAN DER STEENHOVEN, G, VAN DE VYVER, R, Vetterli, Mc, Vikhrov, V, Vincter, Mg, Visser, J, Vogt, M, Volmer, J, Weiskopf, C, Wendland, J, Wilbert, J, Wise, T, and Yen, S
Subjects: DEEP-INELASTIC SCATTERING, EXTRACTION, TARGET, RESONANCE REGION, POLARIMETER, SPIN STRUCTURE-FUNCTION, STRUCTURE-FUNCTION G(1), SUM-RULE, POLARIZED HYDROGEN, NUCLEON
Published: 2003

35. Measurement of single-spin azimuthal asymmetries in semi-inclusive electroproduction of pions and kaons on a longitudinally polarised deuterium target

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Blok, H.P., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G.P., Chiang, H.C., Ciullo, G., Contalbrigo, M., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Eischenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Frullani, S., Garber, Y., Gapienko, G., Gapienko, V., Garibaldi, F., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Grebeniouk, O., Greeniaus, L.G., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hillenbrand, A., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Konigsmann, K., Kolster, H., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V.G., Lagamba, L., Lapikas, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T, Lipka, K., Lorenzon, W., Ma, B., Makins, N.C.R., Marukyan, H., Masoli, F., Menden, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W.D., Oganessyan, K., Ohsuga, H., Orlandi, G., Potashov, S., Potterveld, D.H., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Rith, K., Rosner, G., Rostomyan, A., Ryckbosch, D., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K.P., Schwind, A., Seidl, R., Seibert, J., Seitz, B., Shanidze, R., Shibata, T., Shutov, V., Simani, M.C., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Tessarin, S., Thomas, E., Tkabladze, A., Trzcinski, A., Tytgat, A., Urciuoli, G.M., van der Nat, P., van der Steenhoven, G., Van de Vyver, R., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zihlmann, B., Zohrabian, H., Zupranski, P., Photo Conversion Materials, (Astro)-Particles Physics, and Student Lab and Education
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Nuclear Theory, Hadron, Virtual particle, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pion, 13.88.+e, 0103 physical sciences, 010306 general physics, Nuclear Experiment, QC, Spin-½, 13.60.-r, Physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Deuterium, 13.87.Fh, 14.20.Dh, Condensed Matter::Strongly Correlated Electrons, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, SDG 6 - Clean Water and Sanitation, Lepton
Abstract: Single-spin asymmetries have been measured for semi-inclusive electroproduction of $\pi^+$, $\pi^-$, $\pi^0$ and $K^+$ mesons in deep-inelastic scattering off a longitudinally polarised deuterium target. The asymmetries appear in the distribution of the hadrons in the azimuthal angle $\phi$ around the virtual photon direction, relative to the lepton scattering plane. The corresponding analysing powers in the $\sin \phi$ moment of the cross section are $0.012 \pm 0.002 {(stat.)} \pm 0.002 {(syst.)}$ for $\pi^+$, $0.006 \pm 0.003 {(stat.)} \pm 0.002 {(syst.)}$ for $\pi^-$, $0.021 \pm 0.005 {(stat.)} \pm 0.003 {(syst.)}$ for $\pi^0$ and $0.013 \pm 0.006 {(stat.)} \pm 0.003 {(syst.)}$ for $K^+$. The $\sin 2\phi$ moments are compatible with zero for all particles., Comment: Revised version shortened 9 pages, 3 tables, 7 figures
Published: 2002
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36. Measurement of longitudinal spin transfer to Lambda hyperons in deep-inelastic lepton scattering

Author: Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J.E., Benisch, T., Bernreuther, S., Bianchi, N., Blouw, J., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brauksiepe, S., Braun, B., Bray, B., Brons, S., Bruckner, W., Brull, A., Bruins, E.E.W., Bulten, H.J., Capitani, G.P., Carter, P., Chumney, P., Cisbani, E., Court, G.R., Dalpiaz, P.F., De Sanctis, E., De Schepper, D., Devitsin, E., Witt Huberts, P.K.A., Di Nezza, P., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Ferstl, M., Fiedler, K., Filippone, B.W., Fischer, H., Fox, B., Franz, J., Frullani, S., Funk, M.A., Garber, Y., Gao, H., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Grosshauser, C., Guidal, M., Gute, A., Gyurjyan, V., Haas, J.P., Haeberli, W., Hausser, O., Hansen, J.O., Hartig, M., Hasch, D., Heinsius, F.H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Holt, R.J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Kinney, E., Kirsch, M., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L.H., Krivokhijine, V.G., Kurisuno, M., Kyle, G., Lachnit, W., Lenisa, P., Lorenzon, W., Makins, N.C.R., Manaenkov, S.I., Martens, F.K., Martin, J.W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., Mckeown, R.D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C.A., Miller, M.A., Milner, R., Most, A., Muccifora, V., Mussa, R., Nagaitsev, A., Naryshkin, Y., Nathan, A.M., Neunreither, F., Niczyporuk, J.M., Nowak, W.D., Nupieri, M., O'Neill, T.G., Openshaw, R., Ouyang, J., Owen, B.R., Papavassiliou, V., Pate, S.F., Pitt, M., Potashov, S., Potterveld, D.H., Rakness, G., Reali, A., Redwine, R., Reolon, A.R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Savin, I., Scarlett, C., Schmidt, F., Schmitt, H., Schnell, G., Schuler, K.P., Schwind, A., Seibert, J., Shibata, T.A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stosslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G.M., van den Brand, J.F.J., van der Steenhoven, G., Van de Vyver, R., van Hunen, J.J., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S.E., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.
Subjects: High Energy Physics::Experiment, QC
Abstract: Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the DESY HERA storage ring. For an average fractional energy transfer [z]=0.45, the longitudinal spin transfer from the virtual photon to the Lambda has been extracted. The spin transfer along the Lambda momentum direction is found to be 0.11+or-0.17(stat)+or-0.03(syst); similar values are found for other possible choices for the longitudinal spin direction of the Lambda . This result is the most precise value obtained to date from deep-inelastic scattering with charged lepton beams, and is sensitive to polarized up quark fragmentation to hyperon states. The experimental result is found to be in general agreement with various models of the Lambda spin content, and is consistent with the assumption of helicity conservation in the fragmentation process
Published: 2001

37. Hadron formation in deep-inelastic positron scattering in a nuclear environment

Author: Airapetian, A., Akopov, N., Akopov, Z., Akushevich, I., Amarian, T., Arrington, J., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brauksiepe, S., Braun, B., Bruckner, W., Brull, A., Budz, P., Bulten, H.J., Capitani, G.P., Carter, P., Chumney, P., Cisbani, E., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., De Schepper, D., Devitsin, E., Witt Huberts, P.K.A., Di Nezza, P., Djordadze, V., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Felawka, L., Ferro-Luzzi, M, Fiedler, K., Filippone, B.W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Gute, A., Haeberli, W., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F.H., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hofman, G., Holer, Y., Holt, R.J., Hommez, B., Iarygin, G., Iodice, M., Izotov, A., Jackson, H.E., Jgoun, A., Jung, P., Kaiser, R., Kanesaka, J., Kinnev, E., Kisselev, A., Kitching, P., Koch, N., Konigsmann, K., Kolster, H., Korotkov, V., Kotik, E., Kozlov, V., Krivokhijine, V.G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Lindemann, T., Lorenzon, W., Makins, N.C.R., Martin, J.W., Marukyan, H., Masoli, F., McAndrew, M., McIlhany, K., Mckeown, R.D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C.A., Milner, R., Muccifora, V., Mussa, R., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W.D., Oganessyan, K., O'Neill, T.G., Openshaw, R., Ouyang, J., Owen, B.R., Pate, S.F., Potashov, S., Potterveld, D.H., Rakness, G., Rappoport, V., Redwine, R., Reggiani, D., Reolon, A.R., Ristinen, R., Rith, K., Robinson, D., Rostomyan, A., Ruh, M., Ryckbosch, D., Sakemi, Y., Sato, T., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schmidt, F., Schnell, G., Schuler, K., Schwind, A., Seibert, J., Seitz, B., Shibata, T.A., Shin, T., Shutov, V., Simani, M.C., Simon, A., Sinram, K., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Suetsugu, K., Sutter, M., Taroian, S., Terklov, A., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G.M., van den Brand, J.F.J., van der Stennhoven, G., Van de Vyver, R., van Hunen, J.J., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Volk, E., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., and Zohrabian, H.
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract: The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam. The differential multiplicity of charged hadrons and identified charged pions from nitrogen relative to that from deuterium has been measured as a function of the virtual photon energy nu and the fraction z of this energy transferred to the hadron. There are observed substantial reductions of the multiplicity ratio R/sub M//sup h/ at low nu and at high z, both of which are well described by a gluon-bremsstrahlung model of hadronization. A significant difference of the nu -dependence of R/sub M//sup h/ is found between positive and negative hadrons. This is interpreted in terms of a difference between the formation times of protons and pions, using a phenomenological model to describe the nu - and z-dependence of R/sub M//sup h/.
Published: 2001

38. Double-Spin Asymmetry in the Cross Section for Exclusive tho(0) production in Lepton Proton Scattering

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brauksiepe, S., Braun, B., Bruckner, W., Brull, A., Budz, P., Bulten, H.J., Capitani, G.P., Carter, P., Chumney, P., Cisbani, E., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., De Schepper, D., Devitsin, E., Witt Huberts, P.K.A., Di Nezza, P., Djordjadze, V., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Felawka, L., Ferro-Luzzi, M., Fiedler, K., Filippone, B.W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Gute, A., Haeberli, W., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F.H., Henoch, M., Hertenberger, R., Hesselink, W., Hofman, G., Holler, Y., Holt, R.J., Hommez, B., Iarygin, G., Iodice, M., Izotov, A., Jackson, H.E., Jgoun, A., Jung, P., Kaiser, R., Kanesaka, J., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolster, H., Korotkov, V., Kotik, E., Kozlov, V., Krivokhijine, V.G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Lindemann, T., Lorenzon, W., Makins, N.C.R., Martin, J.W., Marukyan, H., Masoli, F., McAndrew, M., McIlhany, K., Mckeown, R.D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C.A., Milner, R., Muccifora, V., Mussa, R., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W.D., Oganessyan, K., O'Neill, T.G., Openshaw, R., Ouyang, J., Owen, B.R., Pate, S.F., Potashov, S., Potterveld, D.H., Rakness, G., Rappoport, V., Redwine, R., Reggiani, D., Reolon, A.R., Ristinen, R., Rith, K., Robinson, D., Rostomyan, A., Ruh, M., Ryckbosch, D., Sakemi, Y., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schmidt, F., Schnell, G., Schuler, K.P., Schwind, A., Seibert, J., Seitz, B., Shibata, T.A., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Suetsugu, K., Sutter, M., Szymanowski, L., Taroian, S., Terkulov, A., Teryaev, O., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G.M., van den Brand, J.F.J., van der Steenhoven, G., Van de Vyver, R., van Hunen, J.J., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Volk, E., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., Zohrabian, H., (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: HERMES experiment, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, FOS: Physical sciences, Virtual particle, 01 natural sciences, Asymmetry, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, mental disorders, Invariant mass, Vector meson, 010306 general physics, Nuclear Experiment, QC, media_common, Physics, 010308 nuclear & particles physics, Scattering, Vector meson dominance, HERA, Physics::Accelerator Physics, High Energy Physics::Experiment, Condensed Matter::Strongly Correlated Electrons, psychological phenomena and processes
Abstract: Evidence for a positive longitudinal double-spin asymmetry = 0.24 +-0.11 (stat) +-0.02 (syst) in the cross section for exclusive diffractive rho^0(770) vector meson production in polarised lepton-proton scattering was observed by the HERMES experiment. The longitudinally polarised 27.56 GeV HERA positron beam was scattered off a longitudinally polarised pure hydrogen gas target. The average invariant mass of the photon-proton system has a value of = 4.9 GeV, while the average negative squared four-momentum of the virtual photon is = 1.7 GeV^2. The ratio of the present result to the corresponding spin asymmetry in inclusive deep-inelastic scattering is in agreement with an early theoretical prediction based on the generalised vector meson dominance model., Comment: 10 pages, 4 embedded figures, LaTeX
Published: 2001

39. Single spin azimuthal asymmetries in electroproduction of neutral pions in semiinclusive deep inelastic scattering

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Bottcher, H., Borissov, A., Bouhali, O., Bouwhuis, M., Brack, J., Brauksiepe, S., Bruckner, W., Brull, A., Brunn, I., Bulten, H. J., Capitani, G. P., Chumney, P., Cisbani, E., Ciullo, G., Court, G. R., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., De Schepper, D., Devitsin, E., De Witt Huberts, P. K. A., Di Nezza, P., Djordjadze, V., Duren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Ely, J., Fantoni, A., Fechtchenko, A., Felawka, L., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Gute, A., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F. H., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Hofman, G., Holler, Y., Holt, R. J., Hommez, B., Iarygin, G., Izotov, A., Jackson, H. E., Jgoun, A., Jung, P., Kaiser, R., Kanesaka, J., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolster, H., Korotkov, V., Kotik, E., Kozlov, V., Krauss, B., Krivokhijine, V. G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lorenzon, W., Maas, A., Makins, N. C. R., Marukyan, H., Masoli, F., McAndrew, M., McIlhany, K., Meissner, F., Menden, F., Meyners, N., Mikloukho, O., Miller, C. A., Milner, R., Muccifora, V., Mussa, R., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W.-D., Oganessyan, K., O'Neill, T. G., Owen, B. R., Pate, S. F., Potashov, S., Potterveld, D. H., Raithel, M., Rakness, G., Rappoport, V., Redwine, R., Reggiani, D., Reolon, A. R., Rith, K., Robinson, D., Rostomyan, A., Ruh, M., Ryckbosch, D., Sakemi, Y., Sanjiev, I., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schmidt, F., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Seitz, B., Shibata, T.-A., Shutov, V., Simani, M. C., Simon, A., Sinram, K., Steffens, E., Steijger, J. J. M., Stewart, J., Stosslein, U., Suetsugu, K., Taroian, S., Terkulov, A., Teryaev, O., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G. M., Van Den Brand, J. F. J., Van Der Steenhoven, G., Van De Vyver, R., Van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., and Zohrabian, H.
Subjects: positron p: deep inelastic scattering, polarization: longitudinal, HERMES, transverse momentum dependence, fragmentation function, energy dependence, x-dependence, DESY HERA Stor, 27.5 GeV, p: polarized target, pi0: electroproduction, analyzing power, polarization: transverse, quark: polarization, spin: asymmetry, experimental results
Abstract: Physical review / D 64(9), 097101 (2001). doi:10.1103/PhysRevD.64.097101, A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. The analysing power in the sin(phi) moment of the cross section is 0.019 +/- 0.007(stat.) +/- 0.003(syst.). This result is compared to single-spin asymmetries for charged pion production measured in the same kinematic range. The pi^0 asymmetry is of the same size as the pi^+ asymmetry and shows a similar dependence on the relevant kinematic variables. The asymmetry is described by a phenomenological calculation based on a fragmentation function that represents sensitivity to the transverse polarization of the struck quark., Published by Inst., Woodbury, NY
Published: 2001
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40. Multiplicity of charged and neutral pions in deep-inelastic scattering of 27.5 GeV positrons on hydrogen

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brauksiepe, S., Braun, B., Bruckner, W., Brull, A., Budz, P., Bulten, H.J., Capitani, G.P., Carter, P., Chumney, P., Cisbani, E., Court, G.R., Dalpiaz, P.F., De Leo, R., De Nardo, L., De Sanctis, E., De Schepper, D., Devitsin, E., Witt Huberts, P.K.A., Di Nezza, P., Djordjadze, V., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Ferro-Luzzi, M., Fiedler, K., Filippone, B.W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P.W., Greeniaus, L.G., Gute, A., Haeberli, W., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F.H., Henoch, M., Hertenberger, R., Hesselink, W.H.A., Hoffmann-Rothe, P., Hofman, G., Holler, Y., Holt, R.J., Hommez, B., Hoprich, W., Iarygi, G., Ihssen, H., Iodice, M., Iotov, A., Jackson, H.E., Kaiser, R., Kanesaka, J., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolster, H., Korotkov, V., Kotik, E., Kozlov, V., Krivokhijine, V.G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Lindemann, T., Lorenzon, W., Makins, N.C.R., Martin, J.W., Marukyan, H., Masoli, F., McAndrew, M., McIlhany, K., Mckeown, R.D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C.A., Milner, R., Muccifora, V., Mussa, R., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Nowak, W.D., O'Neill, T.G., Openshaw, R., Ouyang, J., Owen, B.R., Pate, S.F., Potashov, S., Potterveld, D.H., Rakness, G., Redwine, R., Reggiani, D., Reolon, A.R., Ristinen, R., Rith, K., Robinson, D., Rostomyan, A., Ruh, M., Ryckbosch, D., Sakemi, Y., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., SChmidt, F., Schmitt, M., Schnell, G., Schuler, K.P., Schwind, A., Seibert, J., Shibata, T.A., Shin, T., Shutov, V., Simani, M.C., Simon, A., Sinram, K., Steffens, E., Steijger, J.J.M., Stewart, J., Stosslein, U., Suetsugu, K., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G.M., van den Brand, J.F.J., van der Steenhoven, G., van der Vyver, R., van Hunen, J.J., Vetterli, M.C., Vikhrov, V., Vincter, M.G., Visser, J., Volk, E., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.
Subjects: High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract: Measurements of the individual multiplicities of pi /sup +/, pi /sup -/ and pi /sup 0/ produced in the deep-inelastic scattering of 27.5 GeV positrons on hydrogen are presented. The average charged pion multiplicity is the same as for neutral pions, up to z approximately= 0.7, where z is the fraction of the energy transferred in the scattering process carried by the pion. This result (below z approximately= 0.7) is consistent with isospin invariance. The total energy fraction associated with charged and neutral pions is 0.51 +or- 0.01(stat.) +or- 0.08 (syst.) and 0.26 +or- 0.01(stat.) +or- 0.04(syst.), respectively. For fixed z, the measured multiplicities depend on both the negative squared four momentum transfer Q/sup 2/ and the Bjorken variable x. The observed dependence on Q/sup 2/ agrees qualitatively with the expected behaviour based on NLO-QCD evolution, while the dependence on x is consistent with that of previous data after corrections have been made for the expected Q/sup 2/-dependence.
Published: 2001

41. Measurement of longitudinal spin transfer to $\Lambda$ hyperons in deep inelastic lepton scattering

Author: Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J. E., Benisch, Th., Bernreuther, S., Bianchi, N., Blouw, J., Bottcher, H., Borissov, A., Bouwhuis, M., Brack, J., Brauksiepe, S., Braun, B., Bray, B., Brons, S., Bruckner, W., Brull, A., Bruins, E. E. W., Bulten, H. J., Capitani, G. P., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., De Sanctis, E., De Schepper, D., Devitsin, E., De Witt Huberts, P. K. A., Di Nezza, P., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Fechtchenko, A., Ferstl, M., Fiedler, K., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Funk, M.-A., Garber, Y., Gao, H., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M., Gute, A., Gyurjyan, V., Haas, J. P., Haeberli, W., Hausser, O., Hansen, J.-O., Hartig, M., Hasch, D., Heinsius, F. H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kirsch, M., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., Krivokhijine, V. G., Kurisuno, M., Kyle, G., Lachnit, W., Lenisa, P., Lorenzon, W., Makins, N. C. R., Manaenkov, S. I., Martens, F. K., Martin, J. W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Miller, M. A., Milner, R., Most, A., Muccifora, V., Mussa, R., Nagaitsev, A., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, J. M., Nowak, W.-D., Nupieri, M., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Papavassiliou, V., Pate, S. F., Pitt, M., Potashov, S., Potterveld, D. H., Rakness, G., Reali, A., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Savin, I., Scarlett, C., Schmidt, F., Schmitt, H., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stosslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G. M., Van Den Brand, J. F. J., Van Der Steenhoven, G., Van De Vyver, R., Van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S. E., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.
Subjects: positron: polarized beam, Lambda: electroproduction, quark model parton, positron p: deep inelastic scattering, up: fragmentation, Lambda: polarization, HERMES, up: polarization, +p+pi%22">Lambda --> p pi, helicity: conservation law, DESY HERA Stor, 27.5 GeV, mass spectrum: (p pi-), angular distribution, +Lambda%22">positron p --> Lambda, experimental results
Abstract: Physical review / D 64(11), 112005 (2001). doi:10.1103/PhysRevD.64.112005, Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the HERA storage ring. For an average fractional energy transfer = 0.45, the longitudinal spin transfer from the virtual photon to the Lambda has been extracted. The spin transfer along the Lambda momentum direction is found to be 0.11 +/- 0.17 (stat) +/- 0.03 (sys); similar values are found for other possible choices for the longitudinal spin direction of the Lambda. This result is the most precise value obtained to date from deep-inelastic scattering with charged lepton beams, and is sensitive to polarized up quark fragmentation to hyperon states. The experimental result is found to be in general agreement with various models of the Lambda spin content, and is consistent with the assumption of helicity conservation in the fragmentation process., Published by Inst., Woodbury, NY
Published: 2001
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42. Measurement of the beam spin azimuthal asymmetry associated with deeply virtual Compton scattering

Author: Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baturin, V., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Bottcher, H., Borissov, A., Bouhali, O., Bouwhuis, M., Brack, J., Brauksiepe, S., Bruckner, W., Brull, A., Brunn, I., Bulten, H. J., Capitani, G. P., Chumney, P., Cisbani, E., Ciullo, G., Court, G. R., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., De Schepper, D., Devitsin, E., De Witt Huberts, P. K. A., Di Nezza, P., Duren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Garber, Y., Garibaldi, F., Garutti, E., Gavrilov, G., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Gute, A., Haeberli, W., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Heinsius, F. H., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Hofman, G., Holler, Y., Holt, R. J., Hommez, B., Iarygin, G., Izotov, A., Jackson, H. E., Jgoun, A., Jung, P., Kaiser, R., Kanesaka, J., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolster, H., Korotkov, V., Kotik, E., Kozlov, V., Krauss, B., Krivokhijine, V. G., Kyle, G., Lagamba, L., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Lorenzon, W., Maas, A., Makins, N. C. R., Marukyan, H., Masoli, F., McAndrew, M., McIlhany, K., Meissner, F., Menden, F., Meyners, N., Mikloukho, O., Miller, C. A., Milner, R., Muccifora, V., Mussa, R., Nagaitsev, A., Nappi, E., Naryshkin, Y., Nass, A., Negodaeva, K., Nowak, W.-D, Oganessyan, K., O'Neill, T. G., Owen, B. R., Pate, S. F., Potashov, S., Potterveld, D. H., Raithel, M., Rakness, G., Rappoport, V., Redwine, R., Reggiani, D., Reolon, A. R., Rith, K., Robinson, D., Rostomyan, A., Ruh, M., Ryckbosch, D., Sakemi, Y., Sanjiev, I., Sato, F., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schmidt, F., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Seitz, B., Shibata, T.-A., Shutov, V., Simani, M. C., Simon, A., Sinram, K., Steffens, E., Steijger, J. J. M., Stewart, J., Stosslein, U., Suetsugu, K., Taroian, S., Terkulov, A., Tessarin, S., Thomas, E., Tipton, B., Tytgat, M., Urciuoli, G. M., Van Den Brand, J. F. J., Van Steenhoven, G., Van Vyver, R., Van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Weiskopf, C., Wendland, J., Wilbert, J., Wise, T., Yen, S., Yoneyama, S., and Zohrabian, H.
Subjects: positron: polarized beam, angular distribution: asymmetry, positron p: deep inelastic scattering, polarization: longitudinal, approximation: Bethe-Heitler, interference, HERMES, photon: electroproduction, helicity: dependence, DESY HERA Stor, analyzing power, Compton scattering: off-shell, 26.7 GeV, experimental results
Abstract: Physical review letters 87(18), 182001 (2001). doi:10.1103/PhysRevLett.87.182001, The beam-spin asymmetry in hard electroproduction of photons has been measured for the first time. The data have been accumulated by the HERMES experiment at DESY using the HERA 27.6 GeV longitudinally polarized positron beam and an unpolarized hydrogen gas target. The asymmetry in the azimuthal distribution of the produced photons in the angle phi relative to the lepton scattering plane was determined with respect to the helicity state of the incoming positron beam. The beam-spin analyzing power in the sin(phi) moment was measured to be -0.23 +/- 0.04(stat) +/- 0.03(syst) in the missing-mass range below 1.7 GeV. The observed asymmetry is attributed to the interference of the Bethe-Heitler and deeply-virtual Compton scattering processes., Published by APS, College Park, Md.
Published: 2001
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43. Electron Scattering with Polarized Targets at TESLA

Author: N Study Group, Anselmino, M., Aschenauer, E. C., Belostotski, S., Bialowons, W., Bluemlein, J., Braun, V., Brinkmann, R., Dueren, M., Ellinghaus, F., Goeke, K., Goertz, St., Gute, A., Harmsen, J., Harrach, D. v., Jakob, R., Kabuss, E. M., Kaiser, R., Korotkov, V., Kroll, P., Leader, E., Lehmann-Dronke, B., Mankiewicz, L., Meier, A., Meyer, W., Meyners, N., Mueller, D., Mulders, P. J., Nowak, W. -D., Niedermeier, L., Oganessyan, K., Pobilitsa, P. V., Polyakov, M. V., Reicherz, G., Rith, K., Ryckbosch, D., Schaefer, A., Sinram, K., Steenhoven, G. v. d., Steffens, E., Steijger, J., and Weiss, C.
Subjects: High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
Abstract: Measurements of polarized electron-nucleon scattering can be realized at the TESLA linear collider facility with projected luminosities that are about two orders of magnitude higher than those expected of other experiments at comparable energies. Longitudinally polarized electrons, accelerated as a small fraction of the total current in the e+ arm of TESLA, can be directed onto a solid state target that may be either longitudinally or transversely polarized. A large variety of polarized parton distribution and fragmentation functions can be determined with unprecedented accuracy, many of them for the first time. A main goal of the experiment is the precise measurement of the x- and Q^2-dependence of the experimentally totally unknown quark transversity distributions that will complete the information on the nucleon's quark spin structure as relevant for high energy processes. Comparing their Q^2-evolution to that of the corresponding helicity distributions constitutes an important precision test of the predictive power of QCD in the spin sector. Measuring transversity distributions and tensor charges allows access to the hitherto unmeasured chirally odd operators in QCD which are of great importance to understand the role of chiral symmetry. The possibilities of using unpolarized targets and of experiments with a real photon beam turn TESLA-N into a versatile next-generation facility at the intersection of particle and nuclear physics., 24 pages, 10 figures
Published: 2000

44. Measurement of the Spin Asymmetry in the Photoproduction of Pairs of High- pT Hadrons at HERMES

Author: Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J. E., Benisch, Th., Bernreuther, S., Bianchi, N., Blouw, J., Böttcher, H., Borissov, A., Brack, J., Brauksiepe, S., Braun, B., Brückner, W., Brüll, A., Bulten, H. J., Capitani, G. P., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., De-Sanctis, E., De-Schepper, D., Devitsin, E., de-Witt-Huberts, P. K. A., Di-Nezza, P., Düren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Ferstl, M., Fiedler, K., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Funk, M.-A., Gärber, Y., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M., Gute, A., Haeberli, W., Hansen, J.-O., Hasch, D., Häusser, O., Heinsius, F. H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Königsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., Kurisuno, M., Kyle, G., Lachnit, W., Lorenzon, W., Makins, N. C. R., Martens, F. K., Martin, J. W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F. M., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Miller, M. A., Milner, R., Most, A., Muccifora, V., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, M., Nowak, W.-D., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Pate, S. F., Potashov, S., Potterveld, D. H., Rakness, G., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Scarlett, C., Schäfer, A., Schmidt, F., Schmitt, H., Schnell, G., Schüler, K. P., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Tipton, B., Tytgat, M., Uriuoli, G. M., van-de-Vyver, R., van-den-Brand, J. F. J., van-der-Steenhoven, G., van-Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S. E., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: We present a measurement of the longitudinal spin asymmetry A|| in photoproduction of pairs of hadrons with high transverse momentum pT. Data were accumulated by the HERMES experiment using a 27.5 GeV polarized positron beam and a polarized hydrogen target internal to the HERA storage ring. For h^+h^- pairs with _(pT)^(h1)>1.5GeV/c and _(pT)^(h2)>1.0GeV/c, the measured asymmetry is A_(||) = -0.28±0.12(stat)±0.02(syst). This negative value is in contrast to the positive asymmetries typically measured in deep inelastic scattering from protons, and is interpreted to arise from a positive gluon polarization.
Published: 2000

45. Measurement of the spin asymmetry in the photoproduction of pairs of high $\mathrm{p_T}$ hadrons at HERMES

Author: Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J. E., Benisch, Th., Bernreuther, S., Bianchi, N., Blouw, J., Bottcher, H., Borissov, A., Brack, J., Brauksiepe, S., Braun, B., Bruckner, W., Brull, A., Bulten, H. J., Capitani, G. P., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., De Sanctis, E., De Schepper, D., Devitsin, E., De Witt Huberts, P. K. A., Di Nezza, P., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Ferstl, M., Fiedler, K., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Funk, M.-A., Garber, Y., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M., Gute, A., Haeberli, W., Hansen, J.-O., Hasch, D., Hausser, O., Heinsius, F. H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., Kurisuno, M., Kyle, G., Lachnit, W., Lorenzon, W., Makins, N. C. R., Martens, F. K., Martin, J. W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F. M., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Miller, M. A., Milner, R., Most, A., Muccifora, V., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, M., Nowak, W.-D., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Pate, S. F., Potashov, S., Potterveld, D. H., Rakness, G., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Scarlett, C., Schafer, A., Schmidt, F., Schmitt, H., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Tipton, B., Tytgat, M., Uriuoli, G. M., Van De Vyver, R., Van Den Brand, J. F. J., Van Der Steenhoven, G., Van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S. E., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.
Subjects: positron: polarized beam, DESY HERA Stor, 27.5 GeV, polarization: asymmetry, positron p: deep inelastic scattering, +hadron%2B+hadron-+positron+anything%22">positron p --> hadron+ hadron- positron anything, polarization: longitudinal, polarized target: internal, HERMES, gluon: polarization, hadron: pair production, experimental results
Abstract: Physical review letters 84(12), 2584 - 2588 (2000). doi:10.1103/PhysRevLett.84.2584, We present a measurement of the longitudinal spin asymmetry A_|| in photoproduction of pairs of hadrons with high transverse momentum p_T. Data were accumulated by the HERMES experiment using a 27.5 GeV polarized positron beam and a polarized hydrogen target internal to the HERA storage ring. For h+h- pairs with p_T^h_1 > 1.5 GeV/c and p_T^h_2 > 1.0 GeV/c, the measured asymmetry is A_|| = -0.28 +/- 0.12 (stat.) +/- 0.02 (syst.). This negative value is in contrast to the positive asymmetries typically measured in deep inelastic scattering from protons, and is interpreted to arise from a positive gluon polarization., Published by APS, College Park, Md.
Published: 2000
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46. Observation of a coherence length effect in exclusive ρ(0) electroproduction

Author: Ackerstaff, K., Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Barrow, S., Baumgarten, C., Beckmann, M., Belostotski, St., Belz, J. E., Benisch, Th., Bernreuther, S., Bianchi, N., Blanchard, S., Blouw, J., Böttcher, H., Borissov, A., Brack, J., Brauksiepe, S., Braun, B., Bray, B., Brons, St., Brückner, W., Brüll, A., Bruins, E. E. W., Bulten, H. J., Cadman, R. V., Capitani, G. P., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., Delheij, P. P. J., De Sanctis, E., De Schepper, D., Devitsin, E., de Witt Huberts, P. K. A., Di Nezza, P., Düren, M., Dvoredsky, A., Elbakian, G., Ely, J., Emerson, J., Fantoni, A., Fechtchenko, A., Ferstl, M., Fick, D., Fiedler, K., Filippone, B. W., Fischer, H., Fortune, H. T., Fox, B., Frabetti, S., Franz, J., Frullani, S., Funk, M.-A., Gagunashvili, N. D., Galumian, P., Gao, H., Gärber, Y., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Giordjian, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M. G., Gute, A., Gyurjyan, V., Haas, J. P., Haeberli, W., Hansen, J.-O., Hasch, D., Häusser, O., Heinsius, F. H., Henderson, R. S., Henkes, Th., Henoch, M., Hertenberger, R., Holler, Y., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Jones, C., Kaiser, R., Kinney, E., Kirsch, M., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Königsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., Krause, B., Krivokhijine, V. G., Kückes, M., Kümmell, F., Kyle, G., Lachnit, W., Lorenzon, W., Lung, A., Makins, N. C. R., Martens, F. K., Martin, J. W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F., Mercer, D., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Miller, M. A., Milner, R. G., Mitsyn, V., Most, A., Mozzetti, R., Muccifora, V., Nagaitsev, A., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, M., Nowak, W.-D., Nupieri, M., Oelwein, P., Ogami, H., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Papavassiliou, V., Pate, S. F., Pitt, M., Poolman, H. R., Potashov, S., Potterveld, D. H., Povh, B., Rakness, G., Reali, A., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Roloff, H., Röper, G., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Savin, I., Scarlett, C., Schmidt, F., Schmitt, H., Schnell, G., Schüler, K. P., Schwind, A., Seibert, J., Shibata, T.-A., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Sowinski, J., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stock, F., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Thiessen, D. M., Thomas, E., Tipton, B., Trudel, A., Tytgat, M., Urciuoli, G. M., van Hunen, J. J., van de Vyver, R., van den Brand, J. F. J., van der Steenhoven, G., Vetterli, M. C., Vikhrov, V., Vincter, M., Visser, J., Volk, E., Wander, W., Welch, T. P., Williamson, S. E., Wise, T., Wölfel, T., Woller, K., Yoneyama, S., Zapfe-Düren, K., Zohrabian, H., and Zurmühle, R.
Subjects: High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Exclusive incoherent electroproduction of the ρ0(770) meson from 1H, 2H, 3He, and 14N targets has been studied by the HERMES experiment at squared four-momentum transfer Q^2>0.4 GeV^2 and positron energy loss ν from 9 to 20 GeV. The ratio of the 14N to 1H cross sections per nucleon, known as the nuclear transparency, was found to decrease with increasing coherence length of quark-antiquark fluctuations of the virtual photon. The data provide clear evidence of the interaction of the quark-antiquark fluctuations with the nuclear medium.
Published: 1999

47. Precision septum-like dipole magnet for the HERA luminosity upgrade

Author: UCL - Autre, Anderberg, B, Danielsson, J, Beeckman, W., Holler, Y, Sinram, K, Vieweg, M, Willeke, F, Woebke, G, 17th International Conference on Magnet Technology, UCL - Autre, Anderberg, B, Danielsson, J, Beeckman, W., Holler, Y, Sinram, K, Vieweg, M, Willeke, F, Woebke, G, and 17th International Conference on Magnet Technology
Abstract: Within the framework of the HERA luminosity upgrade project [1] Scanditronix Magnet AB has designed in collaboration with AMACC All, IBA S.A. and DESY a septum-like dipole for the compensation of orbit- differences between e(+)-p and e(-)-p collisions at HERA. The magnet yoke is 640 mm long, 415 mm wide and 550 mm high. The total magnet length is 930 mm. The pole distance is 70 mm, the "good field" region is +/-20 mm centered around the nominal proton orbit. To meet the high field quality requirements for the whole range of field excitation between 0.1 T and 1.1 T VACOFLUX shims have been added to the pole edges to reduce saturation effects. The air gap is extended from the pole region by 235 mm to allow incoming synchrotron radiation light to pass through the magnet without being scattered., The separation between proton and electron beam at the magnet position at 18.88 m away from the interaction point is 121 mm. Carefully chosen thickness of the return yoke, a 13 mm thick shielding plate between proton and electron beam and 40 mm thick mirror plates on the front faces of the magnet reduce the field outside the magnet well below the tolerable value of 0,5*10(-3) T*m integrated along the e-orbit.
Published: 2002

48. Beam-spin asymmetries in the azimuthal distribution of pion electroproduction

Author: Airapetian, A., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E.C., Augustyniak, W., Avakian, H., Avakian, R., Avetissian, A., Avetisyan, E., Bacchetta, A., Bailey, P., Belostotski, S., Bianchi, N., Blok, H.P., Böttcher, H., Borissov, A., Borysenko, A., Brüll, A., Bryzgalov, V., Capiluppi, M., Capitani, G.P., Ciullo, G., Contalbrigo, M., Dalpiaz, P.F., Deconinck, W., De Leo, R., Demey, M., De Nardo, L., De Sanctis, E., Devitsin, E., Diefenthaler, M., Di Nezza, P., Dreschler, J., Düren, M., Ehrenfried, M., Elalaoui-Moulay, A., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Fabbri, R., Fantoni, A., Felawka, L., Frullani, S., Funel, A., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Gavrilov, G., Gharibyan, V., Giordano, F., Grebeniouk, O., Gregor, I.M., Guler, H., Hadjidakis, C., Hafidi, K., Hartig, M., Hasch, D., Hasegawa, T., Hesselink, W.H.A., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Hristova, I., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H.E., Jgoun, A., Kaiser, R., Keri, T., Kinney, E., Kisselev, A., Kobayashi, T., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Kravchenko, P., Krivokhijine, V.G., Lagamba, L., Lapikás, L., Lenisa, P., Liebing, P., Linden-Levy, L.A., Lorenzon, W., Lu, J., Lu, S., Ma, B.-Q., Maiheu, B., Makins, N.C.R., Mao, Y., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Michler, T., Mikloukho, O., Miller, C.A., Miyachi, Y., Muccifora, V., Murray, M., Nagaitsev, A., Nappi, E., Naryshkin, Y., Negodaev, M., Nowak, W.-D., Oganessyan, K., Ohsuga, H., Osborne, A., Perez-Benito, R., Pickert, N., Raithel, M., Reggiani, D., Reimer, P.E., Reischl, A., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Schäfer, A., Schnell, G., Schüler, K.P., Seele, J., Seidl, R., Seitz, B., Shearer, C., Shibata, T.-A., Shutov, V., Sinram, K., Stancari, M., Statera, M., Steffens, E., Steijger, J.J.M., Stenzel, H., Stewart, J., Stinzing, F., Streit, J., Tait, P., Tanaka, H., Taroian, S., Tchuiko, B., Terkulov, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P.B., van der Steenhoven, G., van Haarlem, Y., Vikhrov, V., Vogel, C., Wang, S., Ye, Y., Ye, Z., Yen, S., Zihlmann, B., and Zupranski, P.
Published: 2007
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49. Precise Alignment of Magnetic Quadrupole Axes for PETRA III

Author: Krause, B., primary, Petrov, A., additional, Prenting, J., additional, Schloesser, M., additional, and Sinram, K., additional
Published: 2008
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50. Transverse polarization ofΛandΛ¯hyperons in quasireal photoproduction

Author: Airapetian, A., primary, Akopov, N., additional, Akopov, Z., additional, Amarian, M., additional, Ammosov, V. V., additional, Andrus, A., additional, Aschenauer, E. C., additional, Augustyniak, W., additional, Avakian, R., additional, Avetissian, A., additional, Avetissian, E., additional, Bailey, P., additional, Baturin, V., additional, Baumgarten, C., additional, Beckmann, M., additional, Belostotski, S., additional, Bernreuther, S., additional, Bianchi, N., additional, Blok, H. P., additional, Böttcher, H., additional, Borissov, A., additional, Bouwhuis, M., additional, Brack, J., additional, Brüll, A., additional, Brunn, I., additional, Capitani, G. P., additional, Chiang, H. C., additional, Ciullo, G., additional, Contalbrigo, M., additional, Court, G. R., additional, Dalpiaz, P. F., additional, De Leo, R., additional, De Nardo, L., additional, De Sanctis, E., additional, Devitsin, E., additional, Di Nezza, P., additional, Düren, M., additional, Ehrenfried, M., additional, Elalaoui-Moulay, A., additional, Elbakian, G., additional, Ellinghaus, F., additional, Elschenbroich, U., additional, Ely, J., additional, Fabbri, R., additional, Fantoni, A., additional, Fechtchenko, A., additional, Felawka, L., additional, Fox, B., additional, Franz, J., additional, Frullani, S., additional, Gärber, Y., additional, Gapienko, G., additional, Gapienko, V., additional, Garibaldi, F., additional, Garutti, E., additional, Gaskell, D., additional, Gavrilov, G., additional, Gharibyan, V., additional, Graw, G., additional, Grebeniouk, O., additional, Greeniaus, L. G., additional, Haeberli, W., additional, Hafidi, K., additional, Hartig, M., additional, Hasch, D., additional, Heesbeen, D., additional, Henoch, M., additional, Hertenberger, R., additional, Hesselink, W. H. A., additional, Hillenbrand, A., additional, Holler, Y., additional, Hommez, B., additional, Iarygin, G., additional, Izotov, A., additional, Jackson, H. E., additional, Jgoun, A., additional, Kaiser, R., additional, Kinney, E., additional, Kisselev, A., additional, Königsmann, K., additional, Kolster, H., additional, Kopytin, M., additional, Korotkov, V., additional, Kozlov, V., additional, Krauss, B., additional, Krivokhijine, V. G., additional, Lagamba, L., additional, Lapikás, L., additional, Laziev, A., additional, Lenisa, P., additional, Liebing, P., additional, Lindemann, T., additional, Lipka, K., additional, Lorenzon, W., additional, Makins, N. C. R., additional, Marukyan, H., additional, Masoli, F., additional, Menden, F., additional, Mexner, V., additional, Meyners, N., additional, Mikloukho, O., additional, Miller, C. A., additional, Miyachi, Y., additional, Muccifora, V., additional, Nagaitsev, A., additional, Nappi, E., additional, Naryshkin, Y., additional, Nass, A., additional, Nowak, W.-D., additional, Oganessyan, K., additional, Ohsuga, H., additional, Orlandi, G., additional, Potashov, S., additional, Potterveld, D. H., additional, Raithel, M., additional, Reggiani, D., additional, Reimer, P. E., additional, Reischl, A., additional, Reolon, A. R., additional, Rith, K., additional, Rosner, G., additional, Rostomyan, A., additional, Ryckbosch, D., additional, Sanjiev, I., additional, Savin, I., additional, Scarlett, C., additional, Schäfer, A., additional, Schill, C., additional, Schnell, G., additional, Schüler, K. P., additional, Schwind, A., additional, Seibert, J., additional, Seitz, B., additional, Shanidze, R., additional, Shibata, T.-A., additional, Shutov, V., additional, Simani, M. C., additional, Sinram, K., additional, Stancari, M., additional, Statera, M., additional, Steffens, E., additional, Steijger, J. J. M., additional, Stewart, J., additional, Stösslein, U., additional, Tanaka, H., additional, Taroian, S., additional, Tchuiko, B., additional, Terkulov, A., additional, Tessarin, S., additional, Thomas, E., additional, Tkabladze, A., additional, Trzcinski, A., additional, Tytgat, M., additional, Urciuoli, G. M., additional, van der Nat, P. B., additional, van der Steenhoven, G., additional, van de Vyver, R., additional, Veretennikov, D., additional, Vetterli, M. C., additional, Vikhrov, V., additional, Vincter, M. G., additional, Visser, J., additional, Vogt, M., additional, Volmer, J., additional, Weiskopf, C., additional, Wendland, J., additional, Wilbert, J., additional, Wise, T., additional, Yen, S., additional, Yoneyama, S., additional, Zihlmann, B., additional, Zohrabian, H., additional, and Zupranski, P., additional
Published: 2007
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