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4 results on '"S. D. Liberto"'

1. New results from a search for v(mu) -> v(tau) and v(e) -> v(tau) oscillation

Author

E. Eskut, A. Kayis Topaksu, G. Onengut, R. v. Dantzig, M. d. Jong, J. Konijn, O. Melzer, R. G. C., E. Pesen, C. A. F. , J. W. E., J. L. Visschers, M. Guler, M. Serin Zeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. D. Serio, M. T. Muciaccia, E. Radicioni, P. Righini, S. Simone, L. Vivolo, A. Bulte, K. Winter, P. Annis, R. El Aidi, M. V. Donckt, B. V. de, P. Vilain, G. Wilquet, B. Saitta, E. D. Capua, Y. Ishii, M. Kazuno, S. Ogawa, H. Shibuya, J. Brunner, M. Chizhou, D. Cussans, M. Doucet, J. P. Fabre, W. Flegel, M. Litmaath, H. Meinhard, E. Niu, H. Overas, J. Panman, I. M. Papdopoulos, S. Ricciardi, A. Rozanov, D. Saltzberg, P. Strolin, R. Tsenov, C. Weinheimer, H. Wong, P. Zucchelli, J. Goldberg, M. Chikawa, E. Arik, A. A. Mailov, J. S. Song, C. S. Yoon, K. Kodama, N. Ushida, S. Aoki, T. Hara, G. Brooijmans, D. Favart, G. Gregoire, J. Herin, A. Artamonov, P. Gorbunov, V. Khovansky, V. Shamanov, I. Tsukerman, D. Bonekamper, N. D'Ambrosio, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Komatsu, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, N. Bruski, S. Buontempo, A. G. Cocco, G. D. Lellis, F. D. Capua, A. Ereditato, T. Kawamura, R. Listone, M. Messina, P. Migliozzi, V. Tioukov, K. Nakamura, T. Okusawa, A. Capone, D. D. Pedis, S. D. Liberto, U. Dore, P. F. Loverre, L. Ludovici, A. Maslennikov, G. Piredda, G. Rosa, R. Santacesaria, A. Satta, F. R. Spada, E. Barbuto, C. Bozza, G. Grella, G. Romano, S. Sorrentino, Y. Sato, I. Tezuka, FIORILLO, GIULIANA, PALLADINO, VITTORIO, E., Eskut, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, M. d., Jong, J., Konijn, O., Melzer, R. G., C., E., Pesen, C. A. F., J. W. E., J. L., Visscher, M., Guler, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. D., Serio, M. T., Muciaccia, E., Radicioni, P., Righini, S., Simone, L., Vivolo, A., Bulte, K., Winter, P., Anni, R., El Aidi, M. V., Donckt, B. V., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, Y., Ishii, M., Kazuno, S., Ogawa, H., Shibuya, J., Brunner, M., Chizhou, D., Cussan, M., Doucet, J. P., Fabre, W., Flegel, M., Litmaath, H., Meinhard, E., Niu, H., Overa, J., Panman, I. M., Papdopoulo, S., Ricciardi, A., Rozanov, D., Saltzberg, P., Strolin, R., Tsenov, C., Weinheimer, H., Wong, P., Zucchelli, J., Goldberg, M., Chikawa, E., Arik, A. A., Mailov, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, D., Bonekamper, N., D'Ambrosio, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Komatsu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, N., Bruski, S., Buontempo, A. G., Cocco, G. D., Lelli, F. D., Capua, A., Ereditato, Fiorillo, Giuliana, T., Kawamura, R., Listone, M., Messina, P., Migliozzi, Palladino, Vittorio, V., Tioukov, K., Nakamura, T., Okusawa, A., Capone, D. D., Pedi, S. D., Liberto, U., Dore, P. F., Loverre, L., Ludovici, A., Maslennikov, G., Piredda, G., Rosa, R., Santacesaria, A., Satta, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, S., Sorrentino, Y., Sato, and I., Tezuka

Subjects
CHORUS EXPERIMENT, LIMITS, NU%28TAU%29+OSCILLATION%22">NU(MU)->NU(TAU) OSCILLATION, SYSTEM
Abstract

A first analysis of the complete set of data collected by CHORUS in the years 1994-1997 is presented. The search for nu (tau) charged current events has been performed for both leptonic and hadronic decays of the tau lepton. No tau candidate has been found, A nu (tau) --> nu (tau) mixing is excluded down to sin(2)2 theta (mu tau) = 6.8 x 10(-4) for large Deltam(2) (90% C.L.). (C) 2001 Elsevier Science B.V. All rights reserved.

Published
2001

2. A search for nu(mu)->nu(tau) oscillation

Author

E. Eskut, A. Kayis, G. Onengut, R. v. Dantzig, M. d. Jong, J. Konijn, O. Melzer, R. G. C. , C. A. F., J. W. E., J. L. Visschers, A. S. Ayan, E. Pesen, M. Serin Zeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. T. Muciaccia, E. Radicioni, S. Simone, L. Vivolo, A. Bulte, P. Lendermann, A. Meyer Sievers, T. Patzak, K. Winter, P. Annis, M. Gruwe, C. Mommaert, M. V. Donckt, B. V. de, P. Vilain, G. Wilquet, P. Righini, B. Saitta, E. D. Capua, C. Luppi, P. Zucchelli, Y. Ishii, T. Kawamura, M. Kazuno, S. Ogawa, H. Shibuya, R. Beyer, J. Brunner, D. Cussans, J. P. Fabre, R. Ferreira, W. Flegel, R. Gurin, M. Litmaath, L. Ludovici, D. Macina, R. M. Drees, H. Meinhard, P. Migliozzi, E. Niu, H. Overas, J. Panman, I. M. Papadopoulos, F. Riccardi, S. Ricciardi, A. Rozanov, D. Saltzberg, R. Santacesaria, G. Stefanini, R. Tsenov, C. Weinheimer, H. Wong, J. Goldberg, K. Hoepfner, M. Chikawa, E. Arik, I. Birol, A. A. Mailov, C. H. Hahn, H. I. Jang, I. G. Park, M. S. Park, J. S. Song, C. S. Yoon, K. Kodama, N. Ushida, S. Aoki, T. Hara, G. Brooijmans, D. Favart, G. Gregoire, J. Herin, V. Lemaitre, A. Artamonov, P. Gorbunov, V. Khovansky, V. Shamanov, V. Smirnitsky, D. Bonekamper, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Kobayashi, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, K. Nakazawa, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, S. Buontempo, A. Cocco, N. D'Ambrosio, G. D. Lellis, A. Ereditato, F. Marchetti Stasi, M. Messina, PALLADINO, VITTORIO, S. Sorrentino, P. Strolin, K. Nakamura, T. Okusawa, T. Yoshida, A. Capone, D. D. Pedis, S. D. Liberto, U. Dore, P. F. Loverre, A. Maslennikov, M. A. Mazzoni, F. Meddi, G. Piredda, A. d. Bartolomeo, C. Bozza, G. Grella, G. Iovane, G. Romano, G. Rosa, Y. Sato, I. Tezuka, FIORILLO, GIULIANA, GARUFI, FABIO, E., Eskut, A., Kayi, G., Onengut, R. v., Dantzig, M. d., Jong, J., Konijn, O., Melzer, R. G. C., C. A. F., J. W., E., J. L., Visscher, A. S., Ayan, E., Pesen, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, A., Bulte, P., Lendermann, A., Meyer Siever, T., Patzak, K., Winter, P., Anni, M., Gruwe, C., Mommaert, M. V., Donckt, B. V., De, P., Vilain, G., Wilquet, P., Righini, B., Saitta, E. D., Capua, C., Luppi, P., Zucchelli, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, R., Beyer, J., Brunner, D., Cussan, J. P., Fabre, R., Ferreira, W., Flegel, R., Gurin, M., Litmaath, L., Ludovici, D., Macina, R. M., Dree, H., Meinhard, P., Migliozzi, E., Niu, H., Overa, J., Panman, I. M., Papadopoulo, F., Riccardi, S., Ricciardi, A., Rozanov, D., Saltzberg, R., Santacesaria, G., Stefanini, R., Tsenov, C., Weinheimer, H., Wong, J., Goldberg, K., Hoepfner, M., Chikawa, E., Arik, I., Birol, A. A., Mailov, C. H., Hahn, H. I., Jang, I. G., Park, M. S., Park, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, V., Lemaitre, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, V., Smirnitsky, D., Bonekamper, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Kobayashi, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, K., Nakazawa, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, S., Buontempo, A., Cocco, N., D'Ambrosio, G. D., Lelli, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, F., Marchetti Stasi, M., Messina, Palladino, Vittorio, S., Sorrentino, P., Strolin, K., Nakamura, T., Okusawa, T., Yoshida, A., Capone, D. D., Pedi, S. D., Liberto, U., Dore, P. F., Loverre, A., Maslennikov, M. A., Mazzoni, F., Meddi, G., Piredda, A. d., Bartolomeo, C., Bozza, G., Grella, G., Iovane, G., Romano, G., Rosa, Y., Sato, and I., Tezuka

Subjects
LIMITS, LIGHT, NEUTRINO
Abstract

CHORUS is an experiment searching for nu(mu) --> nu(tau) oscillation in the CERN wide band neutrino beam with a hybrid setup consisting of a nuclear emulsion target followed by electronic detectors. The experiment has been taking data from 1994 through 1997. A subset of the neutrino interactions collected in 1994 and 1995 have been analyzed, looking for nu(tau) charged current interactions where the tau lepton decays to mu(mu)nu(tau). In a sample of 31,423 nu(mu) charged current interactions, no nu(tau) candidates were found. For large Delta m(mu tau)(2) values, a limit on the mixing angle of sin(2)2 theta(mu tau) < 3.5 x 10(-3) at 90% C.L. can be set, thus improving the previous best result. (C) 1998 Elsevier Science B.V.

Published
1998

3. Search for nu(mu) -> nu(tau) oscillation using the tau decay modes into a single charged particle

Author

E. Eskut, A. Kayis, G. Onengut, R. v. Dantzig, M. d. Jong, J. Konijn, O. Melzer, R. G. C. , C. A. F., J. W. E., J. L. Visschers, M. Guler, M. Serin Zeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. T. Muciaccia, E. Radicioni, S. Simone, L. Vivolo, A. Bulte, T. Patzak, K. Winter, P. Annis, R. E. Aidi, M. Gruwe, C. Mommaert, M. V. Donckt, B. V. de, P. Vilain, G. Wilquet, P. Righini, B. Saitta, E. D. Capua, C. Luppi, P. Zucchelli, Y. Ishii, T. Kawamura, M. Kazuno, S. Ogawa, H. Shibuya, J. Brunner, D. Cussans, J. P. Fabre, R. Ferreira, W. Flegel, M. Litmaath, D. Macina, R. M. Drees, H. Meinhard, P. Migliozzi, E. Niu, H. Overas, J. Panman, I. M. Papadopoulos, E. Pesen, F. Riccardi, S. Ricciardi, A. Rozanov, D. Salzberg, P. Strolin, R. Tsenov, C. Weinheimer, H. Wong, J. Goldberg, K. Hoepfner, M. Chikawa, E. Arik, A. A. Mailov, H. I. Jang, I. G. Park, J. S. Song, C. S. Yoon, K. Kodama, N. Ushida, S. Aoki, T. Hara, G. Brooijmans, D. Favart, G. Gregoire, J. Herin, A. Artamonov, P. Gorbunov, V. Khovansky, V. Shamanov, D. Bonekamper, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Kobayashi, M. Komatsu, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, K. Nakazawa, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, S. Buontempo, A. Cocco, N. D'Ambrosio, G. D. Lellis, A. Ereditato, M. Messina, S. Sorrentino, V. Tioukov, K. Nakamura, T. Okusawa, T. Yoshida, A. Capone, D. D. Pedis, S. D. Liberto, U. Dore, P. F. Loverre, L. Ludovici, A. Maslennikov, M. A. Mazzoni, G. Piredda, R. Santacesaria, A. Satta, E. Barbuto, A. d. Bartolomeo, C. Bozza, G. Grella, G. Iovane, G. Romano, G. Rosa, Y. Sato, I. Tezuka, FIORILLO, GIULIANA, GARUFI, FABIO, PALLADINO, VITTORIO, E., Eskut, A., Kayi, G., Onengut, R. v., Dantzig, M. d., Jong, J., Konijn, O., Melzer, R. G. C., C. A. F., J. W., E., J. L., Visscher, M., Guler, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, A., Bulte, T., Patzak, K., Winter, P., Anni, R. E., Aidi, M., Gruwe, C., Mommaert, M. V., Donckt, B. V., De, P., Vilain, G., Wilquet, P., Righini, B., Saitta, E. D., Capua, C., Luppi, P., Zucchelli, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, J., Brunner, D., Cussan, J. P., Fabre, R., Ferreira, W., Flegel, M., Litmaath, D., Macina, R. M., Dree, H., Meinhard, P., Migliozzi, E., Niu, H., Overa, J., Panman, I. M., Papadopoulo, E., Pesen, F., Riccardi, S., Ricciardi, A., Rozanov, D., Salzberg, P., Strolin, R., Tsenov, C., Weinheimer, H., Wong, J., Goldberg, K., Hoepfner, M., Chikawa, E., Arik, A. A., Mailov, H. I., Jang, I. G., Park, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, D., Bonekamper, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Kobayashi, M., Komatsu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, K., Nakazawa, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, S., Buontempo, A., Cocco, N., D'Ambrosio, G. D., Lelli, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, M., Messina, Palladino, Vittorio, S., Sorrentino, V., Tioukov, K., Nakamura, T., Okusawa, T., Yoshida, A., Capone, D. D., Pedi, S. D., Liberto, U., Dore, P. F., Loverre, L., Ludovici, A., Maslennikov, M. A., Mazzoni, G., Piredda, R., Santacesaria, A., Satta, E., Barbuto, A. d., Bartolomeo, C., Bozza, G., Grella, G., Iovane, G., Romano, G., Rosa, Y., Sato, and I., Tezuka

Abstract

Part of the neutrino events collected in 1994-1995 by the CHORUS experiment has been analysed. A search was performed for nu(tau) charged current interactions followed by the tau lepton decay into a single charged negative hadron, a possible indication for nu(mu) --> nu(tau) oscillation. A sample of 6844 events without an identified muon has been located in the emulsion target. Within the selection criteria, no tau(-) candidate has been found. Combining this result with the one from the search fur nu(tau) interactions using the muonic decay mode (36182 events with an identified muon), a 90% C.L. limit on the mixing angle sin(2)2 theta(mu tau) < 1.8.10(-3) (at large Delta m(2)) has been derived. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

Published
1998

4. Observation of weak neutral current neutrino production of J/psi

Author

Nicola D'Ambrosio, T. Kawamura, K. Winter, Valeri Tioukov, T. Wolff, Alfredo G. Cocco, Michiyuki Chikawa, Pierre Vilain, David Cussans, O. Melzer, C. S. Yoon, N. Ushida, G. Onenguet, K. Niu, F. R. Spada, S. Di Liberto, E. Barbuto, J. Hérin, P. Gorbunov, T. Okusawa, P. Strolin, Antonio Ereditato, E. Pesen, V. Shamanov, Mathieu Doucet, M. de Jong, Osamu Sato, H. Veraes, L. Vivolo, Ch. Weinheimer, J. Panman, R. Santacesaria, Rudolf Oldeman, Jean-Paul Fabre, G. Romano, Y. Kotaka, Jan Visschers, Ramazan Sever, H. Shibuya, Mihail Chizhov, E. Di Capua, Piero Zucchelli, Murat Guler, David Saltzberg, A. Satta, M. Serin-Zeyrek, M. Kazuno, G. Piredda, Yoshihiro Sato, Mitsuhiro Nakamura, K. Nakamura, Shigeki Aoki, U. Dore, G. Rosa, Gaston Wilquet, P. Righini, S. Sorrentino, S. Simone, D. Rondeshagen, A. Kayis-Topaksu, Koichi Kodama, P. Tolun, N. Bruski, Cristiano Bozza, Mehmet Zeyrek, M. Litmaath, S. Ogawa, K. Hoshino, Ioannis Papadopoulos, T. Kozaki, R. Listone, D. Frekers, M. G. Catanesi, Henry T. Wong, J. W. E. Uiterwijk, Toshiyuki Nakano, N. Armenise, Denis Favart, T. Hara, G. De Lellis, H. Meinhard, D. Bonekaemper, I. G. Park, Y. Ishii, M. Messina, W. Flegel, S. Ricciardi, M. T. Muciaccia, L. Ludovici, F. Cassol, G. Fiorillo, I. Tezuka, D. De Pedis, Antonio Capone, A. Buelte, G. Grella, C.A.F.J. van der Poel, E. Eskut, R. El-Aidi, Y. Obayashi, K. Niwa, M. De Serio, Masahiro Komatsu, T. Toshito, S. Buontempo, F. Di Capua, M. Vander Donckt, Alexandre Rozanov, B. Van de Vyver, A. Mailov, V. Khovansky, A. Artamonov, R. Tsenov, J. Goldberg, R. van Dantzig, G. Grégoire, P. F. Loverre, A. Maslennikov, J. Konijn, G. Brooijmans, E. Radicioni, Jürgen Brunner, J. S. Song, Biagio Saitta, Motoaki Miyanishi, P. Annis, E. Niu, I S. Tsukerman, E. Arik, P. Migliozzi, V. Palladino, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CHORUS, UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, E., Eskut, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, M. d., Jong, J., Konijn, O., Melzer, R. G., C., E., Pesen, C. A. F., J. W. E., J. L., Visscher, M., Guler, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, R. D., Serio, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, A., Bulte, K., Winter, P., Anni, R., El Aidi, M. V., Donckt, B. V., De, P., Vilain, G., Wilquet, P., Righini, B., Saitta, E. D., Capua, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, J., Brunner, M., Chizhov, D., Cussan, M., Doucet, J. P., Fabre, W., Flegel, M., Litmaath, H., Meinhard, E., Niu, H., Overa, J., Panman, I. M., Papadopoulo, S., Ricciardi, A., Rozanov, D., Saltzberg, P., Strolin, R., Tsenov, C., Weinheimer, H., Wong, P., Zucchelli, J., Goldberg, M., Chikawa, E., Arik, A. A., Mailov, I. G., Park, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, G., Brooijman, D., Favart, G., Gregoire, J., Herin, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, D., Bonekamper, N., D'Ambrosio, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Komatsu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, N., Bruski, S., Buontempo, A. G., Cocco, G. D., Lelli, F. D., Capua, A., Ereditato, Fiorillo, Giuliana, R., Listone, M., Messina, P., Migliozzi, Palladino, Vittorio, V., Tioukov, K., Nakamura, T., Okusawa, A., Capone, D. D., Pedi, S. D., Liberto, U., Dore, P. F., Loverre, L., Ludovici, A., Maslennikov, G., Piredda, G., Rosa, R., Santacesaria, A., Satta, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, S., Sorrentino, Y., Sato, I., Tezuka, and Damoiseaux, Magali

Subjects
Nuclear and High Energy Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Instrumentation and Detectors, 01 natural sciences, Nucleon, Nuclear physics, PHYSICS, Neutral currents, 0103 physical sciences, Neutrino, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], CALORIMETER, 010306 general physics, Nuclear Experiment, Quantum chromodynamics, Physics, CHORUS EXPERIMENT, Large Hadron Collider, Neutral current, 010308 nuclear & particles physics, CHARM PRODUCTION, High Energy Physics::Phenomenology, Calorimeter, J/?, Production (computer science), High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

Observation of J/? production by neutrinos in the calorimeter of the CHORUS detector exposed to the CERN SPS wide-band ?µ beam is reported. A spectrum-averaged cross section ?J/? = (6.3 ± 3.0) × 10-41 cm2 is obtained for 20 GeV ? E? ? 200 GeV. The data are compared with the theoretical model based on the QCD Z-gluon fusion mechanism. © 2001 Published by Elsevier Science B.V. Foundation for Fundamental Research on Matter Promotion and Mutual Aid Corporation for Private Schools of Japan Bundesministerium für Bildung und Forschung: 057MS12P Brussels Instituut voor Milieubeheer CERN Israel Science Foundation: 328/94 Instituto Nazionale di Fisica Nucleare Nederlandse Organisatie voor Wetenschappelijk Onderzoek National Council for Scientific Research Korean Foundation for Cancer Research: KRF-99-005-D00004 Stichting voor Fundamenteel Onderzoek der Materie We would like to thank A. Kaidalov, S. Kruchinin and V. Lemaitre for fruitful discussions. We gratefully acknowledge the help and support of our numerous technical collaborators who contributed to the detector construction and operation. We thank the neutrino beam staff for their competent assistance, ensuring the excellent performance of the facility. The accumulation of a large data sample in this experiment was also made possible thanks to the efforts of the crew operating the CERN PS and SPS. The general technical support from EP, ECP and IT Divisions is gratefully acknowledged. We thank S. Anthony for help in preparation of the text. The experiment has been made possible by grants from our funding agencies: the Institut Interuniversitaire des Sciences Nucléaires and the Interuniversitair Instituut voor Kernwetenschappen (Belgium); the Israel Science Foundation (Grant 328/94) and the Technion Vice President Fund for the Promotion of Research (Israel); CERN (Geneva, Switzerland); the German Bundesministerium für Bildung und Forschung (Grant 057MS12P(0)) (Germany); the Institute of Theoretical and Experimental Physics (Moscow, Russia); the Istituto Nazionale di Fisica Nucleare (Italy); the Promotion and Mutual Aid Corporation for Private Schools of Japan and Japan Society for the Promotion of Science (Japan); the Korea Research Foundation (Grant KRF-99-005-D00004) (Republic of Korea); the Foundation for Fundamental Research on Matter (FOM) and the National Scientific Research Organization (NWO) (The Netherlands); and the Scientific and Technical Research Council of Turkey (Turkey).

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