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51. Search for the H dibaryon in (K^{-},K^{+}) reactions

Author: Saewoong Bahk, I. Tezuka, Fujio Takeutchi, H. Funahashi, Yoshihiro Sato, J. S. Song, Yoshitaka Itow, Yuji Matsuda, H. Okabe, C.H. Hahn, T. Ishigami, Y. Maeda, T. Iijima, K. Imai, S. H. Chung, Ryuichi Takashima, Kimio Niwa, T. Watanabe, C. S. Yoon, S. Hirata, Kazuhiro Tanaka, H. Tajima, D. C. Kim, J. Y. Kim, S. Ono, Akira Masaike, T. Nakano, Masakazu Kobayashi, J. Yokota, K. Kodama, C. O. Kim, Masaharu Ieiri, H. Togawa, K. Hoshino, Koichi Kikuchi, H. M. Shimizu, Satoshi Watanabe, M. Teranaka, Yutaka Ueda, M. Nakamura, H. Shibuya, K. S. Chung, I. G. Park, M. Kazuno, N. Ushida, Shigeki Aoki, S. Nakanishi, C. Nagoshi, Kazuma Nakazawa, and T. Hara
Subjects: Baryon, Physics, Particle physics, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron, Hyperon, General Physics and Astronomy, Production (computer science), Elementary particle
Abstract: We have studied ({ital K}{sup {minus}},{ital K}{sup +}) reactions from an emulsion target. The {ital S}={minus}2 {ital H} dibaryon has been searched for by the analysis of the {ital K}{sup +} momentum spectrum together with emulsion data. No evidence of {ital H} production was observed in the mass range of 1.90--2.16 GeV/{ital c}{sup 2}. Upper limits for the production cross section of the {ital H} are (0.2--0.6)% of that for the quasifree {Xi}{sup {minus}} production at the 90% confidence level.
Published: 1990
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52. Hybrid emulsion spectrometer for the detection of hadronically produced heavy flavor states

Author: H. I. Jang, S. Kuramata, Koichi Kodama, I. G. Park, S. Ono, O. Kusumoto, D. B. Gibaut, I. T. Lim, T. Tominaga, M. Nakamura, Y. Tsuneoka, K. Taruma, C. S. Yoon, M. Y. Pac, E. Niu, C. Yokoyama, K. Y. Kim, A. P. Freyberger, H. Kitamura, S. K. Kim, George R. Kalbfleisch, D. M. Potter, Makoto Kobayashi, T. Abe, J. M. Dunlea, R. J. Lipton, K. H. Chung, Y. Isokane, J. Yokota, J. S. Song, G. A. Oleynik, T. S. Shin, Y. Tsuzuki, N. W. Reay, S. W. Nam, G. Y. Lim, S. Nakanishi, T. Hara, S. D. Chang, Y. S. Choi, K. Niu, K. Fujiwara, Michiyuki Chikawa, J. S. Kang, S. B. Lee, W. Y. Yuan, A. Gauthier, Shigeki Aoki, B. G. Cheon, Y. Zhang, H. Tajima, K. Moriyama, V. S. Paolone, H. Shibuya, N. Ushida, H. Shibata, Shigeki Tasaka, R. M. Edelstein, Kwang Souk Sim, I. Tezuka, J. Snow, S. E. Willis, C. O. Kim, B. G. Lundberg, T. Y. Kim, B. R. Baller, J. H. Cho, K. Hoshino, J. C. Lee, P. Skubic, J. K. Woo, T. S. Jaffery, Y. Nakamura, F. Minakawa, P. M. Yager, Motoaki Miyanishi, Y. Takahashi, R. J. Stefanski, J. Y. Kim, C. Rush, S. Watanabe, M. Teranaka, H. Fukushima, S. G. Frederiksen, William R. Nichols, R. A. Sidwell, T. Watanabe, G. Fujioka, M. Kazuno, Kimio Niwa, Terushige Fujii, Richard Lander, J. Yamato, T. Okusawa, J. O. Wilcox, D. C. Kim, K. Nakamura, A. Mokhtarani, Yoshihiro Sato, H. Okabe, Saewoong Bahk, Kazuma Nakazawa, K. Reibel, N. R. Stanton, and J. R. Russ
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Spectrometer, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Hadron, Tevatron, Tracking (particle physics), Nuclear physics, Data acquisition, Particle, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Instrumentation
Abstract: A hybrid apparatus consisting of a movable emulsion target and a magnetic spectrometer was used in a fixed target Fermilab Tevatron experiment to study the production of heavy quarks by high-energy hadron beams. High-resolution silicon microstrip detectors were used for precise tracking in the dense particle environment. Details of the experimental apparatus, including the data acquisition system, are described.
Published: 1990
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53. The CHORUS experiment to search for nu(mu)->nu(tau) oscillation

Author: E. Eskut, A. Kayis, G. Onengut, R. vanDantzig, J. Konijn, R. G. C. , C. A. F., J. W. E., J. L. Visschers, A. S. Ayan, E. Pesen, M. SerinZeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, F. Cassol, M. G. Catanesi, M. T. Muciaccia, E. Radicioni, S. Simone, L. Vivolo, D. Eckstein, P. Lendermann, A. MeyerSievers, T. Patzak, K. Winter, P. Righini, B. Saitta, P. Annis, M. Gruwe, C. Mommaert, M. VanderDonckt, B. VandeVyver, P. Vilain, G. Wilquet, E. DiCapua, M. Ferroni, C. Luppi, S. Ricciardi, Y. Ishii, T. Kawamura, M. Kazuno, S. Ogawa, H. Shibuya, R. Beyer, J. Brunner, G. Carnevale, J. P. Fabre, R. Ferreira, W. Flegel, R. Gurin, M. deJong, M. Litmaath, L. Ludovici, D. Macina, R. M. Drees, H. Meinhard, E. Niu, H. Overas, J. Panman, F. Riccardi, A. Rozanov, D. Saltzberg, G. Stefanini, R. Tzenov, C. Weinheimer, H. T. Wong, P. Zucchelli, J. Goldberg, K. Hoepfner, H. Chikawa, E. Arik, I. Birol, A. A. Mailov, C. H. Hahn, H. I. Jang, J. Y. Kim, S. N. Kim, 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, V. Epstein, P. Gorbunov, V. Khovansky, V. Shamanov, V. Smirnitsky, D. Bonekamper, D. Frekers, D. Rondeshagen, T. Wolff, K. Hoshino, M. Kobayashi, M. Komatzu, Y. Kotaka, T. Kozaki, M. Miyanishi, M. Nakamura, T. Nakano, K. Niu, K. Niwa, Y. Obayashi, O. Sato, T. Toshito, S. Buontempo, L. Casagrande, A. G. Cocco, N. DAmbrosio, A. Ereditato, F. MarchettiStasi, M. Messina, P. Migliozzi, S. Sorrentino, P. Strolin, K. Nakamura, T. Okusawa, T. Yoshida, A. Capone, D. DePedis, S. DiLiberto, U. Dore, P. F. Loverre, A. Maslennikov, M. A. Mazzoni, F. Meddi, G. Piredda, R. Santacesaria, 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., Vandantzig, J., Konijn, R. G. C., C. A. F., J. W., E., J. L., Visscher, A. S., Ayan, E., Pesen, M., Serinzeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, E., Radicioni, S., Simone, L., Vivolo, D., Eckstein, P., Lendermann, A., Meyersiever, T., Patzak, K., Winter, P., Righini, B., Saitta, P., Anni, M., Gruwe, C., Mommaert, M., Vanderdonckt, B., Vandevyver, P., Vilain, G., Wilquet, E., Dicapua, M., Ferroni, C., Luppi, S., Ricciardi, Y., Ishii, T., Kawamura, M., Kazuno, S., Ogawa, H., Shibuya, R., Beyer, J., Brunner, G., Carnevale, J. P., Fabre, R., Ferreira, W., Flegel, R., Gurin, M., Dejong, M., Litmaath, L., Ludovici, D., Macina, R. M., Dree, H., Meinhard, E., Niu, H., Overa, J., Panman, F., Riccardi, A., Rozanov, D., Saltzberg, G., Stefanini, R., Tzenov, C., Weinheimer, H. T., Wong, P., Zucchelli, J., Goldberg, K., Hoepfner, H., Chikawa, E., Arik, I., Birol, A. A., Mailov, C. H., Hahn, H. I., Jang, J. Y., Kim, S. N., Kim, 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, V., Epstein, P., Gorbunov, V., Khovansky, V., Shamanov, V., Smirnitsky, D., Bonekamper, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, M., Kobayashi, M., Komatzu, Y., Kotaka, T., Kozaki, M., Miyanishi, M., Nakamura, T., Nakano, K., Niu, K., Niwa, Y., Obayashi, O., Sato, T., Toshito, S., Buontempo, L., Casagrande, A. G., Cocco, N., Dambrosio, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, F., Marchettistasi, M., Messina, P., Migliozzi, Palladino, Vittorio, S., Sorrentino, P., Strolin, K., Nakamura, T., Okusawa, T., Yoshida, A., Capone, D., Depedi, S., Diliberto, U., Dore, P. F., Loverre, A., Maslennikov, M. A., Mazzoni, F., Meddi, G., Piredda, R., Santacesaria, A. D., Bartolomeo, C., Bozza, G., Grella, G., Iovane, G., Romano, G., Rosa, Y., Sato, and I., Tezuka
Subjects: CALIBRATION, ELECTRON-SCATTERING, LIMITS, HYBRID EXPERIMENT, PARTICLES, NEUTRINO-ELECTRON, CALORIMETER, PERFORMANCE, READOUT, DETECTOR
Abstract: A new experimental apparatus, designed principally for a high sensitivity search for nu( --> mu(tau) oscillation, has been successfully constructed and made operational by the CHORUS Collaboration for the CERN-WA95 experiment. It consists of a large emulsion target, a scintillating fiber tracker system with optoelectronics read-out, an air-core magnet, a set of trigger hodoscopes, a calorimeter based on the lead/scintillating-fiber technique, and a muon spectrometer. The design, construction and performance of the entire apparatus and of the different detectors are described.
Published: 1997

54. The Chorus Experiment

Author: E. Di Capua, R. Ferreira, Toshiyuki Nakano, S. Ricciardi, Jürgen Brunner, P. Annis, B. Saitta, F. Garufi, S. Buontempo, D. Rondeshagen, K. Niwa, F. Marchetti-Stasi, M. T. Muciaccia, Ghislain Grégoire, K. Hoshino, E. Niu, P. Zucchelli, A. G. Cocco, L. Michel, S. Di Liberto, G. Romano, J. Hérin, J. S. Song, F. Riccardi, Ramazan Sever, Franco Meddi, K. Niu, J. Kim, Denis Favart, A. Capone, D. Macina, C.A.F.J. van der Poel, J. L. Visschers, G. Fiorillo, Ch. Weinheimer, Rudolf Oldeman, E. Eskut, P. F. Loverre, M. Teranaka, A. Mailov, G. Grella, A. Rozanov, M. Gruwe, E. Pesen, Y. Sato, Pierre Vilain, Kazuma Nakazawa, M. Vander Donckt, E. Arik, H. Shibuya, M. Serin-Zeyrek, V. Smirnitsky, Gulsen Onengut, A. Artamonov, Antonio Ereditato, V. Shamanov, T. Hara, J. Panman, H. Meinhard, N. Armenise, S. Ogawa, N. Ushida, Koichi Kodama, A. Maslennikov, P. Gorbunov, Shigeki Aoki, I. G. Park, J. Goldberg, M. de Jong, Y. Nakamura, S. Simone, Mitsuhiro Nakamura, K. Nakamura, K. Winter, Henry T. Wong, J. W. E. Uiterwijk, V. Palladino, D. De Pedis, G. Brooijmans, G. Rosa, M. G. Catanesi, P. Strolin, R. Santacesaria, Gaston Wilquet, M. A. Mazzoni, J. Konijn, P. Tolun, H. Øverȧs, T. Patzak, P. Migliozzi, A. Di Bartolomeo, Mehmet Zeyrek, U. Dore, V. Khovansky, Inanc Birol, C. Mommaert, R. Gurin, I. Tezuka, C. H. Hahn, D. Frekers, Jean-Paul Fabre, D. Bonekaemper, W. Flegel, F. Cassol, H. Chikawa, Vincent Lemaitre, K. Höpfner, C. Luppi, T. Okusawa, G. Piredda, Osamu Sato, Makoto Kobayashi, J., Konijn, R. G. C., Oldeman, C. A. F. J., van der Poel, J. W. E., Uiterwijk, E., Eskut, G., Onengüt, E., Pesen, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, F., Cassol, M. G., Catanesi, M. T., Muciaccia, S., Simone, K., Höpfner, T., Patzak, P., Anni, M., Gruwé, C., Mommaert, M., Van der Donckt, P., Vilain, G., Wilquet, C. H., Hahn, J. Y., Kim, E., Di Capua, C., Luppi, S., Ricciardi, B., Saitta, P., Zucchelli, J., Brunner, A., Capone, M., de Jong, J. P., Fabre, R., Ferreira, W., Flegel, J., Goldberg, P., Gorbunov, R., Gurin, D., Macina, H., Meinhard, E., Niu, H., Øverȧ, J., Panman, F., Riccardi, J. L., Visscher, Weinheimer, C. h., K., Winter, H., Wong, K., Nakazawa, H., Chikawa, E., Arik, I., Birol, A. A., Mailov, I. G., Park, J. S., Song, K., Kodama, N., Ushida, S., Aoki, T., Hara, D., Favart, G., Grégoire, G., Brooijman, J., Hérin, V., Lemaître, L., Michel, A., Artamonov, V., Khovansky, A., Rozanov, V., Shamanov, V., Smirnitsky, D., Bonekaemper, D., Freker, D., Rondeshagen, K., Hoshino, M., Kobayashi, M., Nakamura, Y., Nakamura, K., Niu, K., Niwa, T., Nakano, O., Sato, S., Buontempo, A., Cocco, A., Ereditato, Fiorillo, Giuliana, Garufi, Fabio, F., Marchetti Stasi, P., Migliozzi, Palladino, Vittorio, P., Strolin, K., Nakamura, T., Okusawa, M., Teranaka, D., De Pedi, S., Di Liberto, U., Dore, P. F., Loverre, M. A., Mazzoni, A., Maslennikov, F., Meddi, G., Piredda, R., Santacesaria, A., di Bartolomeo, G., Grella, G., Romano, G., Rosa, S., Ogawa, H., Shibuya, Y., Sato, and I., Tezuka
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, CHORUS, neutrino oscillation, nuclear emulsions, biology, Chorus, Neutrino beam, Status report, biology.organism_classification, Atomic and Molecular Physics, and Optics
Abstract: The Chorus experiment, which aims at a search for v(mu) --> v(tau) oscillations using the neutrino beam of the CERN-SPS, has successfully taken data in 1994 and 1995. The detection technique will be discussed and the performances of the apparatus as well as a status report will be given.
Published: 1996

55. Experimental study of trimuon events in neutrino charged-current interactions

Author: T. Wolff, Nicola D'Ambrosio, David Cussans, E. Radicioni, C.A.F.J. van der Poel, Jürgen Brunner, David Saltzberg, P. Gorbunov, A. Satta, M. de Jong, Y. Sato, F. R. Spada, U. Kose, T. Hara, J. Kawada, Gulsen Onengut, N. Ushida, Mitsuhiro Nakamura, S. Sorrentino, S. Kama, K. Nakamura, E. Di Capua, G. Fiorillo, I.M. Papadopoulos, M. T. Muciaccia, A. Ereditato, O. Melzer, Michiyuki Chikawa, S. Ogawa, G. De Lellis, D. Rondeshagen, Ramazan Sever, K. Niu, Ghislain Grégoire, P. Zucchelli, Ilya Tsukerman, Mathieu Doucet, S. Kalinin, A. G. Cocco, U. Dore, P. Strolin, G. De Rosa, Pierre Vilain, E. Pesen, A. Kayis-Topaksu, Ivana Hristova, Masahiro Komatsu, V Tioukov, Toshiyuki Nakano, Osamu Sato, R. Santacesaria, P. F. Loverre, T. Okusawa, T. Toshito, A. Marotta, Rudolf Oldeman, Denis Favart, P. Migliozzi, I. Tezuka, L. Ludovici, D. Kolev, D. Frekers, E. Arik, P. Righini, B. Saitta, R. Santorelli, M. Ieva, Koichi Kodama, Mihail Chizhov, G. Romano, N. Nonaka, Jan Visschers, V. Shamanov, C. Sirignano, J. S. Song, Murat Guler, J. W. E. Uiterwijk, M. G. Catanesi, I. Makhlyoueva, H. Shibuya, M Messina, Cristiano Bozza, N. Bruski, Motoaki Miyanishi, K. Hoshino, M. Litmaath, T. Kawamura, M. De Serio, M. Serin-Zeyrek, A. Bülte, K. Niwa, Jean-Paul Fabre, Shigeki Aoki, G. Rosa, Gaston Wilquet, P. Tolun, S. Ricciardi, K. Winter, L. Scotto Lavina, Th. Delbar, C. S. Yoon, V. Khovansky, C. Pistillo, A. Maslennikov, H. Meinhard, J. Konijn, G. Grella, A. Rozanov, Mehmet Zeyrek, S. Simone, B. Van de Vyver, E. Barbuto, S. Buontempo, J. Panman, F. Di Capua, K. Narita, A. Artamonov, R. Tsenov, J. Goldberg, R. van Dantzig, Other Research IHEF (IoP, FNWI), Kayis Topaksu, A., Onengüt, G., van Dantzig, R., de Jong, M., Konijn, J., Melzer, O., Oldeman, R. G. C., Pesen, E., van der Poel, C. A. F. J., Visschers, J. L., Güler, M., Köse, U., Serin Zeyrek, M., Kama, S., Sever, R., Tolun, P., Zeyrek, M. T., Catanesi, M. G., De Serio, M., Ieva, M., Muciaccia, M. T., Radicioni, E., Simone, S., Bülte, A., Winter, K., Van de Vyver, B., Vilain, P., Wilquet, G., Saitta, B., Di Capua, E., Ogawa, S., Shibuya, H., Artamonov, A., Brunner, J., Chizhov, M., Cussans, D., Doucet, M., Fabre, J. P., Hristova, I. R., Kawamura, T., Kolev, D., Litmaath, M., Meinhard, H., Panman, J., Papadopoulos, I. M., Ricciardi, S., Rozanov, A., Saltzberg, D., Tsenov, R., Uiterwijk, J. W. E., Zucchelli, P., Goldberg, J., Chikawa, M., Arik, E., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Delbar, T., Favart, D., Grégoire, G., Kalinin, S., Makhlyoueva, I., Gorbunov, P., Khovansky, V., Shamanov, V., Tsukerman, I., Bruski, N., Frekers, D., Rondeshagen, D., Wolff, T., Hoshino, K., Kawada, J., Komatsu, M., Miyanishi, M., Nakamura, M., Nakano, T., Narita, K., Niu, K., Niwa, K., Nonaka, N., Sato, O., Toshito, T., Buontempo, S., Cocco, A. G., D'Ambrosio, N., De Lellis, G., De Rosa, G., DI CAPUA, Francesco, Ereditato, A., Fiorillo, Giuliana, Marotta, A., Messina, M., Migliozzi, P., Pistillo, C., Santorelli, R., Scotto Lavina, L., Strolin, P., Tioukov, V., Nakamura, K., Okusawa, T., Dore, U., Loverre, P. F., Ludovici, L., Maslennikov, A., Righini, P., Rosa, G., Santacesaria, R., Satta, A., Spada, F. R., Barbuto, E., Bozza, C., Grella, G., Romano, G., Sirignano, C., Sorrentino, S., Sato, Y., Tezuka, I., T., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, DE ROSA, Gianfranca, F. D., Capua, A., Ereditato, A., Marotta, M., Messina, P., Migliozzi, C., Pistillo, R., Santorelli, L. S., Lavina, P., Strolin, V., Tioukov, K., Nakamura, T., Okusawa, U., Dore, R., Loverre, L., Ludovici, A., Maslennikov, P., Righini, G., Rosa, R., Santacesaria, A., Satta, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, I., Tezuka, UCL - SC/PHYS - Département de physique, and Çukurova Üniversitesi
Subjects: Physics, CHORUS EXPERIMENT, Nuclear and High Energy Physics, Particle physics, INCLUSIVE RHO-0 PRODUCTION, Muon, Large Hadron Collider, Meson, Physics::Instrumentation and Detectors, Branching fraction, NU-P, MESON PRODUCTION, Bremsstrahlung, Virtual particle, NEON, ANTINEUTRINO, J/PSI, Nuclear physics, SCATTERING, High Energy Physics::Experiment, CALORIMETER, Neutrino, Particle Physics - Experiment, Charged current
Abstract: WOS: 000223122600006 This Letter reports on a study of trimuon events induced by neutrino interactions in the CHORUS calorimeter exposed to the CERN SPS wide-band v(mu) beam. Among the multimuon events produced in the calorimeter, 42 mu(-) mu(-) mu(+) events were selected and their kinematical properties investigated. In the past, several groups collected a sample of about one hundred events of this type but their source was largely unknown. Taking advantage of experimental data presently available on the production and muonic branching ratios of light neutral mesons and resonances, we make absolute predictions for the expected rates in our experiment. Detailed Monte Carlo simulations described in this article show that more than half of the trimuon events can be attributed to this source. Muons from pi- and K- decays in charm dimuon events are responsible for an additional approximate to 25% contribution to the total mu(-)mu(-)mu(+) rate. The remaining 25% of events are likely to come from the internal bremsstrahlung of virtual photons into a muon pair. Associated-charm production with subsequent decays of both charmed particles into muons is a negligible source of trimuon events. (C) 2004 Elsevier B.V. All rights reserved.
Published: 2004

56. Cross-section measurement for quasi-elastic production of charmed baryons in νN interactions

Author: I Maklioueva, O. Melzer, M. Serin-Zeyrek, Michiyuki Chikawa, E. Arik, C. Pistillo, M. T. Muciaccia, Shigeki Aoki, Ivana Hristova, E. Di Capua, S. Kalinin, R. Santacesaria, V. Khovansky, U. Dore, H. Meinhard, P. Strolin, E. Pesen, S. Sorrentino, I. Tezuka, G. L. Pittoni, Toshiyuki Nakano, J. S. Song, Motoaki Miyanishi, S. Buontempo, G. De Lellis, K. Niwa, F. Di Capua, D. Frekers, Mathieu Doucet, Y. Sato, Mitsuhiro Nakamura, S. Ogawa, K. Nakamura, Ramazan Sever, Nicola D'Ambrosio, D. Kolev, K. Hoshino, A. G. Cocco, Denis Favart, J. Kawada, Gulsen Onengut, N. Ushida, T. Hara, K. Winter, B. Saitta, Rudolf Oldeman, P. Migliozzi, F. R. Spada, C. S. Yoon, U. Kose, G. De Rosa, Pierre Vilain, N. Bruski, T. Kawamura, I.M. Papadopoulos, Mihail Chizhov, Ghislain Grégoire, M. G. Catanesi, V. Tioukov, K. Niu, G. Romano, A. Artamonov, H. Shibuya, L. Ludovici, A. Marotta, Osamu Sato, N. Nonaka, E. Radicioni, M. Ieva, Antonio Ereditato, P. Righini, V. Shamanov, C. Sirignano, P. Gorbunov, A. Satta, M. de Jong, R. Tsenov, J. Goldberg, Jan Visschers, G. Rosa, R. van Dantzig, Gaston Wilquet, S. Simone, M. De Serio, P. Tolun, A. Bülte, B. Van de Vyver, S. Ricciardi, Koichi Kodama, Murat Guler, J. W. E. Uiterwijk, L. Scotto Lavina, M. Messina, Th. Delbar, A. Rozanov, G. Fiorillo, G. Grella, Mehmet Zeyrek, Masahiro Komatsu, Cristiano Bozza, T. Okusawa, T. Toshito, P. F. Loverre, K. Narita, E. Barbuto, J. Panman, P. Zucchelli, Ilya Tsukerman, A. Kayis-Topaksu, Çukurova Üniversitesi, Kayis Topaksu, A., Onengüt, G., van Dantzig, R., de Jong, M., Melzer, O., Oldeman, R. G. C., Pesen, E., Spada, F. R., Visschers, J. L., Güler, M., Köse, U., Serin Zeyrek, M., Sever, R., Tolun, P., Zeyrek, M. T., Catanesi, M. G., De Serio, M., Ieva, M., Muciaccia, M. T., Radicioni, E., Simone, S., Bülte, A., Winter, K., Van de Vyver, B., Vilain, P., Wilquet, G., Pittoni, G. L., Saitta, B., Di Capua, E., Ogawa, S., Shibuya, H., Artamonov, A., Chizhov, M., Doucet, M., Hristova, I. R., Kawamura, T., Kolev, D., Meinhard, H., Panman, J., Papadopoulos, I. M., Ricciardi, S., Rozanov, A., Tsenov, R., Uiterwijk, J. W. E., Zucchelli, P., Goldberg, J., Chikawa, M., Arik, E., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Delbar, T., Favart, D., Grégoire, G., Kalinin, S., Maklioueva, I., Gorbunov, P., Khovansky, V., Shamanov, V., Tsukerman, I., Bruski, N., Frekers, D., Hoshino, K., Kawada, J., Komatsu, M., Miyanishi, M., Nakamura, M., Nakano, T., Narita, K., Niu, K., Niwa, K., Nonaka, N., Sato, O., Toshito, T., Buontempo, S., Cocco, A. G., D'Ambrosio, N., De Lellis, G., De Rosa, G., DI CAPUA, Francesco, Ereditato, A., Fiorillo, Giuliana, Marotta, A., Messina, M., Migliozzi, P., Pistillo, C., Scotto lavina, L., Strolin, P., Tioukov, V., Nakamura, K., Okusawa, T., Dore, U., Loverre, P. F., Ludovici, L., Righini, P., Rosa, G., Santacesaria, R., Satta, A., Barbuto, E., Bozza, C., Grella, G., Romano, G., Sirignano, C., Sorrentino, S., Sato, Y., Tezuka, I., T., Nakano, K., Narita, K., Niu, K., Niwa, N., Nonaka, O., Sato, T., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, DE ROSA, Gianfranca, F. D., Capua, A., Ereditato, A., Marotta, M., Messina, P., Migliozzi, C., Pistillo, L. S., Lavina, P., Strolin, V., Tioukov, K., Nakamura, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, P., Righini, G., Rosa, R., Santacesaria, A., Satta, E., Barbuto, C., Bozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, and I., Tezuka
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, CHORUS EXPERIMENT, High Energy Physics::Phenomenology, Physique atomique et nucléaire, Baryon, Nuclear physics, Charmed baryons, Cross section (physics), NEUTRINO-PRODUCTION, CHARGED-CURRENT INTERACTIONS, Nuclear emulsion, Production (computer science), High Energy Physics::Experiment, Charm (quantum number), Neutrino, Nuclear Experiment, Charged current, Particle Physics - Experiment
Abstract: A study of quasi-elastic production of charmed baryons in charged-current interactions of neutrinos with the nuclear emulsion target of CHORUS is presented. In a sample of about 46 000 interactions located in the emulsion, candidates for decays of short-lived particles were identified by using new automatic scanning systems and later confirmed through visual inspection. Criteria based both on the topological and kinematical characteristics of quasi-elastic charm production allowed a clear separation between events of this type and those in which charm is produced in deep inelastic processes. A final sample containing 13 candidates consistent with quasi-elastic production of a charmed baryon with an estimated background of 1.7 events was obtained. At the average neutrino energy of 27 GeV the cross-section for the total quasi-elastic production of charmed baryons relative to the νN charged-current cross-section was measured to be σ(QE)/σ(CC) = (0.23-0.06+0.02(stat)×10-2. Through an analysis of the topology at the production and decay vertices the relative cross-sections were measured separately for singly (Λc +, ∑c+, ∑c +*) and doubly (∑c++, ∑ c++*) charged baryons. © 2003 Published by Elsevier B.V., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2003

57. Observation of one event with the characteristics of associated charm production in neutrino charged-current interactions

Author: A. Kayis-Topaksu, A. G. Cocco, M. Messina, I Maklioueva, Denis Favart, G. Fiorillo, P. F. Loverre, G. De Rosa, K. Niu, E. Arik, V. Palladino, B. Saitta, Osamu Sato, K. Niwa, Th. Delbar, Murat Guler, M. Miyanishi, G. Grella, Michiyuki Chikawa, G. De Lellis, Y. Sato, Masahiro Komatsu, T. Wolff, M. G. Catanesi, Nicola D'Ambrosio, T. Okusawa, D. Kolev, V. Khovansky, T. Toshito, S. Kalinin, Gulsen Onengut, Jan Visschers, N. Armenise, Koichi Kodama, T. Kawamura, U. Dore, S. Sorrentino, N. Ushida, David Cussans, M. De Serio, A. Bülte, K. Hoshino, P. Gorbunov, J. W. E. Uiterwijk, S. Ogawa, Toshiyuki Nakano, O. Melzer, M. de Jong, Ivana Hristova, S. Simone, R. Santacesaria, P. Zucchelli, Ilya Tsukerman, F. R. Spada, A. Maslennikov, P. Strolin, Cristiano Bozza, B. Van de Vyver, S. Ricciardi, E. Pesen, I. Tezuka, A. Satta, R. El-Aidi, P. Migliozzi, L. Ludovici, E. Di Capua, J. Konijn, N. Nonaka, P Righini, M. Ieva, Mihail Chizhov, Antonio Ereditato, V. Shamanov, Ramazan Sever, G. Rosa, Gaston Wilquet, P. Tolun, D. Frekers, A. Artamonov, H. Shibuya, T. Hara, R. Tsenov, J. Goldberg, N. Bruski, R. van Dantzig, S. Buontempo, F. Di Capua, Mathieu Doucet, K. Winter, Mitsuhiro Nakamura, K. Nakamura, C. S. Yoon, I.M. Papadopoulos, M. T. Muciaccia, K. Narita, E. Barbuto, Valeri Tioukov, Pierre Vilain, J. Panman, M. Serin-Zeyrek, Shigeki Aoki, Mehmet Zeyrek, A. Rozanov, H. Meinhard, Rudolf Oldeman, Ghislain Grégoire, G. Romano, J. S. Song, E. Radicioni, Jürgen Brunner, D. Rondeshagen, Kayis Topaksu, A, Onengüt, G, van Dantzig, R, de Jong, M, Konijn, J, Melzer, O, Oldeman, R. G. C, Pesen, E, Visschers, J. L, Güler, M, Serin Zeyrek, M, Sever, R, Tolun, P, Zeyrek, M. T, Armenise, N, Catanesi, M. G, De Serio, M, Ieva, M, Muciaccia, M. T, Radicioni, E, Simone, S, Bülte, A, Winter, K, El Aidi, R, Van de Vyver, B, Vilain, P, Wilquet, G, Saitta, B, Di Capua, E, Ogawa, S, Shibuya, H, Artamonov, A, Brunner, J, Chizhov, M, Cussans, D, Doucet, M, Hristova, I. R, Kolev, D, Meinhard, H, Panman, J, Papadopoulos, I. M, Ricciardi, S, Rozanov, A, Tsenov, R, Uiterwijk, J. W. E, Zucchelli, P, Goldberg, J, Chikawa, M, Arik, E, Song, J. S, Yoon, C. S, Kodama, K, Ushida, N, Aoki, S, Hara, T, Delbar, T, Favart, D, Grégoire, G, Kalinin, S, Maklioueva, I, Gorbunov, P, Khovansky, V, Shamanov, V, Tsukerman, I, Bruski, N, Frekers, D, Rondeshagen, D, Wolff, T, Hoshino, K, Komatsu, M, Miyanishi, M, Nakamura, M, Nakano, T, Narita, K, Niu, K, Niwa, K, Nonaka, N, Sato, O, Toshito, T, Buontempo, S, Cocco, A. G, D'Ambrosio, N, De lellis, G, De Rosa, G, DI CAPUA, Francesco, Ereditato, A, Fiorillo, Giuliana, Kawamura, T, Messina, M, Migliozzi, P, Palladino, V, Strolin, P, Tioukov, V, Nakamura, K, Okusawa, T, Dore, U, Loverre, P. F, Ludovici, L, Maslennikov, A, Righini, P, Rosa, G, Santacesaria, R, Satta, A, Spada, F. R, Barbuto, E, Bozza, C, Grella, G, Romano, G, Sorrentino, S, Sato, Y, Tezuka, I., UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, T., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, DE ROSA, Gianfranca, F. D., Capua, A., Ereditato, T., Kawamura, M., Messina, P., Migliozzi, Palladino, Vittorio, Strolin, PAOLO EMILIO, V., Tioukov, K., Nakamura, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, A., Maslennikov, P., Righini, 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: Physics, Nuclear and High Energy Physics, Particle physics, Muon, High Energy Physics::Phenomenology, Hadron, Nuclear physics, SEARCH, High Energy Physics::Experiment, Production (computer science), Nuclear emulsion, Charm (quantum number), Neutrino, Nuclear Experiment, Event (particle physics), Particle Physics - Experiment, Charged current, OSCILLATION
Abstract: We report on a search for associated charm production in neutrino charged-current interactions in the CHORUS experiment, based on the visual observation of charmed-particle decays. The search differs from those carried out so far in which the production of cc has been inferred from measurements of events with two or three muons in the final state, resulting from the decay of charmed hadrons. One event with a double charm-decay topology has been found and a corresponding background of 0.04 events has been evaluated. © 2002 Elsevier Science B.V. All rights reserved. CERN Promotion and Mutual Aid Corporation for Private Schools of Japan Bundesministerium für Bildung und Forschung Grant Foundation: KRF-2001-005-D00006 Israel Science Foundation: 328/94 Instituto Nazionale di Fisica Nucleare Foundation for Fundamental Research on Matter Korean Foundation for Cancer Research We gratefully acknowledge the help and support of the neutrino-beam staff and of the numerous technical collaborators who contributed to the detector construction, operation, emulsion pouring, development and scanning. The experiment has been made possible by grants from 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 (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-2001-005-D00006) (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). We gratefully acknowledge their support.
Published: 2002

58. Measurement of D0 production in neutrino charged-current interactions

Author: Motoaki Miyanishi, A. Artamonov, E. Di Capua, K. Hoshino, R. Tsenov, J. Goldberg, S. Ricciardi, G. De Rosa, M. De Serio, A. Bülte, R. van Dantzig, O. Melzer, R. El-Aidi, S. Kalinin, H. Meinhard, Murat Guler, L. Scotto Lavina, Nicola D'Ambrosio, G. Fiorillo, Osamu Sato, Masahiro Komatsu, U. Dore, T. Okusawa, S. Simone, T. Toshito, A. G. Cocco, M. Serin-Zeyrek, B. Van de Vyver, P. Gorbunov, M. G. Catanesi, P. Strolin, Denis Favart, M. de Jong, Shigeki Aoki, I. Tezuka, Pierre Vilain, E. Pesen, F. R. Spada, U. Kose, K. Niu, S. Buontempo, F. Di Capua, N. Armenise, I Maklioueva, Jan Visschers, D. Frekers, P Righini, B. Saitta, A. Rozanov, Koichi Kodama, E. Arik, K. Winter, V. Khovansky, T. Hara, Ghislain Grégoire, A. Ereditato, N. Bruski, P. Migliozzi, J. W. E. Uiterwijk, S. Sorrentino, L. Ludovici, T. Kawamura, G. Romano, M. Ieva, C. S. Yoon, Michiyuki Chikawa, S. Ogawa, Mihail Chizhov, A. Satta, Cristiano Bozza, M Messina, Rudolf Oldeman, Ivana Hristova, Mathieu Doucet, Y. Sato, R. Santacesaria, Mehmet Zeyrek, G. Rosa, K. Narita, P. F. Loverre, J. Kawada, Ramazan Sever, Gaston Wilquet, Gulsen Onengut, P. Tolun, E. Barbuto, N. Ushida, H. Shibuya, N. Nonaka, V. Shamanov, C. Sirignano, J. Panman, P. Zucchelli, Ilya Tsukerman, M. T. Muciaccia, A. Kayis-Topaksu, Mitsuhiro Nakamura, K. Nakamura, Toshiyuki Nakano, G. De Lellis, I.M. Papadopoulos, D. Kolev, E. Radicioni, K. Niwa, Th. Delbar, C. Pistillo, V Tioukov, A. Marotta, G. Grella, J. S. Song, UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, Niwa, N., Nonaka, O., Sato, T., Toshito, S., Buontempo, L., Castagneto, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, F. D., Capua, DE ROSA, Gianfranca, A., Ereditato, Fiorillo, Giuliana, T., Kawamura, M., Messina, P., Migliozzi, Palladino, Vittorio, P., Strolin, V., Tioukov, K., Nakamura, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, P., Righini, G., Rosa, R., Santacesaria, A., Satta, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, and I., Tezuka
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Detector, CHORUS, Neutrino beam, Vertex (geometry), EVENTS, Nuclear physics, OPPOSITE-SIGN DIMUONS, SEARCH, Physique des particules élémentaires, High Energy Physics::Experiment, Nuclear emulsion, QUARKS, Neutrino, Nuclear Experiment, Neutrino oscillation, Particle Physics - Experiment, Charged current
Abstract: During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the Wide Band Neutrino Beam from the CERN-SPS. About 170 000 neutrino interactions were successfully located in the emulsion. Improvements in the automatic emulsion scanning systems and application of different criteria allowed the sample of located events to be used for studies of charm production. We present a measurement of the production rate of D 0 mesons based on a sample of 25 693 located v μ charged-current (CC) interactions analysed so far. After reconstruction of the event topology in the vertex region, 283 D 0 decays were observed with an estimated background of 9.2 K 0 and Λ decays. The ratio of cross-section of D 0 production and v μ CC interactions is found to be (1.99 ± 0.13(stat.) ± 0.17(syst.)) × 10 -2 at 27 GeV average v μ energy. © 2002 Elsevier Science B. V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2002

59. Determination of the semi-leptonic branching fraction of charm hadrons produced in neutrino charged current interactions

Author: Nicola D'Ambrosio, S. Sorrentino, A. Rozanov, Michiyuki Chikawa, F. R. Spada, M. T. Muciaccia, S. Ogawa, A. G. Cocco, O. Melzer, Mitsuhiro Nakamura, K. Nakamura, Rudolf Oldeman, Masahiro Komatsu, Ivana Hristova, K. Hoshino, Denis Favart, T. Okusawa, C. Pistillo, Ghislain Grégoire, T. Toshito, K. Narita, I.M. Papadopoulos, M Messina, R. Santacesaria, E. Barbuto, H. Meinhard, G. Romano, S. Simone, E. Di Capua, V Tioukov, P. Strolin, M. De Serio, A. Bülte, J. Panman, S. Ricciardi, J. S. Song, P. Zucchelli, Ilya Tsukerman, A. Ereditato, G. De Rosa, D. Kolev, E. Pesen, Mathieu Doucet, P. Migliozzi, N. Bruski, L. Scotto Lavina, M. G. Catanesi, S. Kalinin, R. El-Aidi, Murat Guler, B. Van de Vyver, T. Kawamura, Ramazan Sever, U. Dore, Mehmet Zeyrek, E. Radicioni, Mihail Chizhov, B. Saitta, I. Tezuka, D. Frekers, H. Shibuya, I Maklioueva, T. Hara, L. Ludovici, Y. Sato, A. Kayis-Topaksu, S. Buontempo, K. Winter, N. Nonaka, G. Rosa, M. Ieva, V. Shamanov, C. Sirignano, P. F. Loverre, E. Arik, Gulsen Onengut, Gaston Wilquet, P. Tolun, Pierre Vilain, G. Grella, N. Armenise, F. Di Capua, C. S. Yoon, N. Ushida, K. Niwa, Th. Delbar, A. Artamonov, R. Tsenov, J. Goldberg, R. van Dantzig, P Righini, V. Khovansky, M. Serin-Zeyrek, Shigeki Aoki, M. Miyanishi, Toshiyuki Nakano, P. Gorbunov, G. De Lellis, M. de Jong, K. Niu, A. Satta, Cristiano Bozza, Osamu Sato, Koichi Kodama, J. W. E. Uiterwijk, Jan Visschers, G. Fiorillo, UCL - SC/PHYS - Département de physique, Kayis Topaksu, A, Onengüt, G, de Jong, M, Melzer, O, Oldeman, R. G. C, Pesen, E, Spada, F. R, van Dantzig, R, Visschers, J. L, Güler, M, Serin Zeyrek, M, Sever, R, Tolun, P, Zeyrek, M. T, Armenise, N, Catanesi, M. G, De Serio, M, Ieva, M, Muciaccia, M. T, Radicioni, E, Simone, S, Bülte, A, Winter, K, El Aidi, R, Van de Vyver, B, Vilain, P, Wilquet, G, Saitta, B, Di Capua, E, Ogawa, S, Shibuya, H, Artamonov, A, Chizhov, M, Doucet, M, Hristova, I. R, Kawamura, T, Kolev, D, Meinhard, H, Panman, J, Papadopoulos, I. M, Ricciardi, S, Rozanov, A, Tsenov, R, Uiterwijk, J. W. E, Zucchelli, P, Goldberg, J, Chikawa, M, Arik, E, Song, J. S, Yoon, C. S, Kodama, K, Ushida, N, Aoki, S, Hara, T, Delbar, T, Favart, D, Grégoire, G, Kalinin, S, Maklioueva, I, Gorbunov, P, Khovansky, V, Shamanov, V, Tsukerman, I, Bruski, N, Frekers, D, Hoshino, K, Komatsu, M, Miyanishi, M, Nakamura, M, Nakano, T, Narita, K, Niu, K, Niwa, K, Nonaka, N, Sato, O, Toshito, T, Buontempo, S, Cocco, A. G, D'Ambrosio, N, De Lellis, G, DI CAPUA, Francesco, De Rosa, G, Ereditato, A, Fiorillo, Giuliana, Messina, M, Migliozzi, P, Pistillo, C, Scotto lavina, L, Strolin, P, Tioukov, V, Nakamura, K, Okusawa, T, Dore, U, Loverre, P. F, Ludovici, L, Righini, P, Rosa, G, Santacesaria, R, Satta, A, Barbuto, E, Bozza, C, Grella, G, Romano, G, Sirignano, C, Sorrentino, S, Sato, Y, Tezuka, I., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, F. D., Capua, DE ROSA, Gianfranca, A., Ereditato, M., Messina, P., Migliozzi, C., Pistillo, L. S., Lavina, P., Strolin, V., Tioukov, K., Nakamura, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, P., Righini, G., Rosa, R., Santacesaria, A., Satta, E., Barbuto, C., Ozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, I., Tezuka, and Çukurova Üniversitesi
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Branching fraction, Detector, Hadron, CHORUS, Visible energy, CROSS-SECTIONS, PHYSICS, EVENTS, Nuclear physics, OPPOSITE-SIGN DIMUONS, SEARCH, Yield (chemistry), Physique des particules élémentaires, Charm (quantum number), Neutrino, Particle Physics - Experiment, Charged current
Abstract: During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the CERN-SPS Wide Band Neutrino Beam. The improvements of the past few years in the automatic emulsion scanning systems allowed a sample of events located in emulsion to be used for studies of charm production. Based on a sample of 56172vμu charged-current interactions analysed so far, we find a value of Bμ = 0.093 ± 0.009(stat.) ± 0.009(syst.) for the semi-leptonic branching fraction of charm hadrons. The result for events with visible energy larger than 30 GeV, Bμ = 0.102 ± 0.016(stat.) ± 0.010(syst.), can be combined with the existing measurements of the dimuon rate to yield a value of 0.219 ± 0.022 for the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element \Vcd\. © 2002 Elsevier Science B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2002

60. Observation of aHΛΛ6eDouble Hypernucleus

Author: S. Torikai, J. Parker, M. Yosoi, J. H. Chung, N. Ushida, Hiroyuki Noumi, D.H. Davis, M. Mitsuhara, Tomoko Yoshida, Y. S. Iwata, Y. S. Ra, Fujio Takeutchi, Kazuma Nakazawa, Y. L. Lee, H. Torii, H. Shibuya, M. Sekimoto, K. S. Sim, C. O. Kim, Junji Tojo, Y. Nagase, K. M. Baik, Adam Rusek, H. Okabe, K. Oyama, S. J. Kim, Tomokazu Fukuda, Kazunuki Yamamoto, H. Akikawa, K. Imai, K. Arai, J. S. Song, J. K. Ahn, H. Tanaka, L. H. Zhu, T. Takahashi, B. Bassalleck, C. S. Yoon, T. Kouketsu, Shigeki Aoki, M. S. Chung, D.N. Tovee, Saewoong Bahk, Takayoshi Kawai, C. Nagoshi, Seok Kim, J. Y. Kim, J. W C McNabb, H. M. Park, N. Yasuda, K. Hoshino, H. Kanda, Masaharu Ieiri, K. Tanida, I. G. Park, Y. H. Iwata, Hirotaka Takahashi, J. T. Rhee, M. Kawasaki, M. Kaneko, S. Ogawa, P. K. Saha, D. Seki, C. J. Yoon, Y. Kondo, J. T. Yang, and A. K. Ichikawa
Subjects: Physics, Particle physics, Excited state, Hyperon, General Physics and Astronomy, Lambda, Hypernucleus
Abstract: A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of ${}_{\ensuremath{\Lambda}\ensuremath{\Lambda}}^{6}\mathrm{He}$ emitted from a ${\ensuremath{\Xi}}^{\ensuremath{-}}$ hyperon nuclear capture at rest. The mass of ${}_{\ensuremath{\Lambda}\ensuremath{\Lambda}}^{6}\mathrm{He}$ and the $\ensuremath{\Lambda}\ensuremath{-}\ensuremath{\Lambda}$ interaction energy $\ensuremath{\Delta}{B}_{\ensuremath{\Lambda}\ensuremath{\Lambda}}$ have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of $\ensuremath{\Delta}{B}_{\ensuremath{\Lambda}\ensuremath{\Lambda}}$ is $1.01\ifmmode\pm\else\textpm\fi{}{0.20}_{\ensuremath{-}0.11}^{+0.18}\phantom{\rule{0ex}{0ex}}\mathrm{MeV}$. This demonstrates that the $\ensuremath{\Lambda}\ensuremath{-}\ensuremath{\Lambda}$ interaction is weakly attractive.
Published: 2001
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61. Observation of a (6)(LambdaLambda)He double hypernucleus

Author: H, Takahashi, J K, Ahn, H, Akikawa, S, Aoki, K, Arai, S Y, Bahk, K M, Baik, B, Bassalleck, J H, Chung, M S, Chung, D H, Davis, T, Fukuda, K, Hoshino, A, Ichikawa, M, Ieiri, K, Imai, Y H, Iwata, Y S, Iwata, H, Kanda, M, Kaneko, T, Kawai, M, Kawasaki, C O, Kim, J Y, Kim, S J, Kim, S H, Kim, Y, Kondo, T, Kouketsu, Y L, Lee, J W, McNabb, M, Mitsuhara, Y, Nagase, C, Nagoshi, K, Nakazawa, H, Noumi, S, Ogawa, H, Okabe, K, Oyama, H M, Park, I G, Park, J, Parker, Y S, Ra, J T, Rhee, A, Rusek, H, Shibuya, K S, Sim, P K, Saha, D, Seki, M, Sekimoto, J S, Song, T, Takahashi, F, Takeutchi, H, Tanaka, K, Tanida, J, Tojo, H, Torii, S, Torikai, D N, Tovee, N, Ushida, K, Yamamoto, N, Yasuda, J T, Yang, C J, Yoon, C S, Yoon, M, Yosoi, T, Yoshida, and L, Zhu
Abstract: A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of ( 6)(LambdaLambda)He emitted from a Xi(-) hyperon nuclear capture at rest. The mass of ( 6)(LambdaLambda)He and the Lambda-Lambda interaction energy DeltaB(LambdaLambda) have been measured for the first time devoid of the ambiguities due to the possibilities of excited states. The value of DeltaB(LambdaLambda) is 1.01+/-0.20(+0.18)(-0.11) MeV. This demonstrates that the Lambda-Lambda interaction is weakly attractive.
Published: 2001

62. A New Upper Limit for the Tau-Neutrino Magnetic Moment

Author: Walter Freeman, M. Nakamura, K. Okada, N. W. Reay, R. Rameika, A. Kulik, T. Akdogan, C. Andreopoulos, B. Baller, Reinhard Schwienhorst, V. Paolone, J. T. Rhee, D. J. Boehnlein, S. Yoshida, P. Berghaus, Jorge G. Morfin, Masahiro Komatsu, J. Trammell, J. Wilcox, G. Tzanakos, Koichi Kodama, N. Ushida, P. M. Yager, T. Hara, Shigeki Aoki, M. A. Kubantsev, Niki Saoulidou, Ken Heller, J. Sielaff, B. Lundberg, J. Schneps, Motoaki Miyanishi, H. Jiko, C. S. Yoon, R. A. Sidwell, T. Kafka, W. P. Oliver, K. Niwa, J. S. Song, C. Rosenfeld, Osamu Sato, S. H. Chung, T. Patzak, Jae Chul Yun, Matt W. Graham, N. R. Stanton, N. Nonaka, Toshiyuki Nakano, K. Hoshino, C. Erickson, D. P. Ciampa, and Roger Rusack
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Magnetic moment, FOS: Physical sciences, Neutrino beam, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, Tau neutrino, Bibliography, High Energy Physics::Experiment, Beam dump, Limit (mathematics), Event (particle physics)
Abstract: Using a prompt neutrino beam in which a nu_tau component was identified for the first time, the nu_tau magnetic moment was measured based on a search for an anomalous increase in the number of neutrino-electron interactions. One such event was observed when 2.3 were expected from background processes, giving an upper 90% confidence limit of 3.9x10^-7 Bohr magnetons., Comment: 9 pages; 1 figure
Published: 2001
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63. Doubly strange nuclei by a hybrid-emulsion experiment E373 at KEK

Author: Masaharu Ieiri, M. Sekimoto, Y. S. Ra, G. B. Franklin, M. S. Chung, Y. Akaishi, Fujio Takeutchi, Kensuke Arai, P. K. Saha, T. Takahashi, C. Nagoshi, Adam Rusek, Hirotaka Takahashi, Y. S. Iwata, S. Torikai, N. Yasuda, Takayoshi Kawai, C. S. Yoon, H. Shibuya, Shigeki Aoki, Saewoong Bahk, Y. Yamamoto, Y. Kondo, D.N. Tovee, J. H. Chung, A. K. Ichikawa, J. T. Rhee, M. Yosoi, K. M. Baik, Kazuma Nakazawa, B. Bassalleck, Jinhu Yang, Hiroyuki Noumi, K. S. Sim, D. H. Davis, I. G. Park, Sanghoon Kim, Hajime Tanaka, H. Okabe, T. Yoshida, M. Kaneko, C. O. Kim, D. Seki, K. Imai, S. Ogawa, J. S. Song, C. J. Yoon, H. Torii, L. H. Zhu, Tomokazu Fukuda, H. Akikawa, J. K. Ahn, K. Tanida, M. Mitsuhara, T. Kouketsu, Y. H. Iwata, Toshio Motoba, Kazunuki Yamamoto, J. Y. Kim, Y. L. Lee, J. Parker, N. Ushida, K. Oyama, Junji Tojo, Y. Nagase, S. J. Kim, H. M. Park, J. W C McNabb, K. Hoshino, and H. Kanda
Subjects: Physics, Nuclear physics, Particle physics, Pion, Meson, Hyperon, Lambda baryon, Isotopes of beryllium, Hypernucleus, Isotopes of helium, Xi baryon
Abstract: A hybrid emulsion experiment E373 at KEK has been carried out to study doubly strange nuclear system. By the 8% data analysis of all, one twin single-Λ hypernuclei event and two events of double-Λ hypernucleus have been successfully detected. The twin single-Λ event is uniquely interpreted as Ⅺ−+14N→Λ5He+Λ5He+4He+n for the first time. In the first double-Λ hypernucleus event, “Demachi-Yanagi,” it is interpreted as Ⅺ−+12C→ΛΛ10Be* (or ΛΛ10Be*)+t. The second double-Λ hypernucleus event, “NAGARA,” shows a clearly recognized topology and the interpretation is unique as Ⅺ−+12C→ΛΛ6He+4He+t, ΛΛ6He→Λ5He+π−+p, Λ5He→p+d+2n etc. By the preliminary result of the ΛΛ6He, the attractive ΛΛ interaction has been confirmed with the ΔBΛΛ∼1 MeV.
Published: 2001
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64. Observation of Tau Neutrino Interactions

Author: C. Erickson, D. P. Ciampa, T. Patzak, B. Lundberg, A. Kulik, C. Andreopoulos, T. Akdogan, P. Berghaus, J. S. Song, Masahiro Komatsu, Toshiyuki Nakano, R. Rameika, M. Nakamura, N. Nonaka, D. J. Boehnlein, C. Rosenfeld, G. Tzanakos, J. Trammell, J. Wilcox, K. Hoshino, S. Yoshida, J. Sielaff, Osamu Sato, Motoaki Miyanishi, C. S. Yoon, R. A. Sidwell, Jae Chul Yun, Matt W. Graham, S. H. Chung, K. Okada, K. Niwa, M. A. Kubantsev, J. T. Rhee, P. M. Yager, T. Hara, J. Schneps, N. W. Reay, Koichi Kodama, Shigeki Aoki, Ken Heller, Walter Freeman, H. Jiko, T. Kafka, N. Ushida, B. Baller, Reinhard Schwienhorst, Roger Rusack, Jorge G. Morfin, V. Paolone, N. R. Stanton, Niki Saoulidou, W. P. Oliver, Physique Corpusculaire et Cosmologie - Collège de France (PCC), and Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Tau neutrino, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Measurements of neutrino speed, Nuclear emulsion, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation, Charged current, Lepton
Abstract: The DONUT experiment has analyzed 203 neutrino interactions recorded in nuclear emulsion targets. A decay search has found evidence of four tau neutrino interactions with an estimated background of 0.34 events. This number is consistent with the Standard Model expectation., 12 pages, 3 figures, PDF
Published: 2000
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65. AN EXPERIMENT TO STUDY <font>S</font> = -2 NUCLEAR SYSTEM PS-E373 (KEK) — FOR FULLY AUTOMATED SCANNING OF Ξ-TRACKS

Author: S. Torikai, N. Yasuda, M. Yosoi, Hiroyuki Noumi, Y. S. Ra, Hirotaka Takahashi, D.H. Davis, M. Sekimoto, Saewoong Bahk, Y. Yamamoto, K. Hoshino, N. Ushida, D.N. Tovee, H. Kanda, Y. Kondo, Masaharu Ieiri, J. T. Rhee, Fujio Takeutchi, M. Kaneko, S. Ogawa, K. M. Baik, K. S. Sim, H. Okabe, H. Torii, Junji Tojo, Hajime Tanaka, H. Shibuya, K. Imai, S. J. Kim, Takayoshi Kawai, H. M. Park, M. S. Chung, Jinhu Yang, A. K. Ichikawa, J. Y. Kim, C. Nagoshi, J. S. Song, T. Yoshida, Y. Akaishi, Kazunuki Yamamoto, Tomokazu Fukuda, H. Akikawa, I. G. Park, C. O. Kim, C. J. Yoon, J. K. Ahn, Kazuma Nakazawa, T. Takahashi, K. Ohyama, Shigeki Aoki, Y. H. Iwata, and Toshio Motoba
Subjects: Physics, Nuclear physics, Nuclear magnetic resonance, Fully automated, Nuclear system
Published: 2000
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66. STUDY OF DOUBLE-STRANGENESS NUCLEI WITH HYBRID-EMULSION METHOD (KEK-PS E373)

Author: Masaharu Ieiri, H. Takahashi, Y. Akaishi, A. K. Ichikawa, N. Ushida, Y. H. Iwata, I. G. Park, Junji Tojo, M. Kaneko, S. Ogawa, K. Oyama, Kazuhiro Yamamoto, J. T. Yang, Toshio Motoba, Fujio Takeutchi, H. A. Torii, Y. S. Ra, Y. Kondo, H. M. Park, Tomokazu Fukuda, Y. Yosoi, H. Akikawa, M. S. Chung, C. J. Yoon, Takayoshi Kawai, C. Nagoshi, T. Yoshida, J. K. Ahn, J.T. Rhee, M. Sekimoto, H. Shibuya, Kazuma Nakazawa, H. Tanaka, K. S. Sim, H. Okabe, K. Imai, Saewoong Bahk, K. M. Baik, C. O. Kim, J. Y. Kim, Y. Yamamoto, S. Torikai, N. Yasuda, Hiroyuki Noumi, S. Aoki, K. Hoshino, J. S. Song, Toshiyuki Takahashi, H. Kanda, and S. J. Kim
Subjects: Physics, Nuclear physics, Emulsion, Strangeness
Published: 2000
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67. The CHORUS experiment to search for ν_μ→ν_τ oscillation

Author: K. Hoepfner, Motoaki Miyanishi, P. Annis, A. Capone, G. Grella, E. Niu, Nicola D'Ambrosio, B. Saitta, G. Grégoire, T. Kawamura, Alfredo G. Cocco, Salvatore Buontempo, David Saltzberg, M. Litmaath, Kimio Niwa, Y. Obayashi, F. Riccardi, G. Rosa, E. Arik, R. Santacesaria, U. Dore, Matteo Ferroni, M. G. Catanesi, C. Mommaert, S. Sorrentino, N. Ushida, S. N. Kim, H. Chikawa, Vincent Lemaitre, M. Komatzu, K. Nakamura, F. Marchetti-Stasi, S. Ogawa, D. Frekers, L. Ludovici, J. Panman, D. C. Kim, Franco Meddi, M. Vander Donckt, Mehmet Zeyrek, Koichi Kodama, T. Kozaki, V. Khovansky, E. Pesen, T. Hara, Y. Kotaka, C. H. Hahn, Pierre Vilain, M. S. Park, G. Carnevale, K. Winter, Jean-Paul Fabre, V. Smirnitsky, D. Eckstein, D. Macina, M. Nakamura, D. Rondeshagen, E. Radicioni, Jürgen Brunner, P. Migliozzi, V. Palladino, Ch. Weinheimer, K. Hoshino, R. Gurin, Rudolf Oldeman, D. De Pedis, H. I. Jang, Henry T. Wong, J. W. E. Uiterwijk, R. Beyer, A. Artamonov, M. A. Mazzoni, Y. Ishii, A. S. Ayan, A. Maslennikov, G. Brooijmans, A. Kayis, F. Garufi, P. Lendermann, E. Di Capua, R. Ferreira, T. Yoshida, M. Messina, I. G. Park, G. Iovane, A. Meyer-Sievers, W. Flegel, C. S. Yoon, F. Cassol, Denis Favart, G. Romano, R. Tzenov, H. Øverȧs, R. van Dantzig, A. Di Bartolomeo, M. Serin-Zeyrek, Alexandre Rozanov, S. Simone, G. Fiorillo, H. Meinhard, S. Di Liberto, J. Konijn, V. Epstein, B. Van de Vyver, J. Hérin, A. Mailov, P. Zucchelli, J. S. Song, Shigeki Aoki, H. Shibuya, M. Kazuno, C. Luppi, J. L. Visschers, R. Meijer Drees, T. Patzak, K. Niu, T. Toshito, I. Tezuka, T. Okusawa, P. Strolin, T. Wolff, L. Casagrande, Gulsen Onengut, J. Y. Kim, P. Gorbunov, M. de Jong, J. Goldberg, Osamu Sato, L. Vivolo, Cristiano Bozza, Ramazan Sever, G. Piredda, Yoshihiro Sato, P. Righini, D. Bonekämper, M. T. Muciaccia, N. Armenise, Toshiyuki Nakano, S. Ricciardi, M. Gruwe, Inanc Birol, Antonio Ereditato, V. Shamanov, G. Stefanini, C.A.F.J. van der Poel, E. Eskut, Gaston Wilquet, P. Tolun, Makoto Kobayashi, and P. F. Loverre
Subjects: Physics, Nuclear and High Energy Physics, biology, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Oscillation, Detector, Chorus, biology.organism_classification, Nuclear physics, Nuclear magnetic resonance, Muon spectrometer, Magnet, High Energy Physics::Experiment, Sensitivity (control systems), Neutrino oscillation, Instrumentation
Abstract: A new experimental apparatus, designed principally for a high sensitivity search for ν μ → ν τ oscillation, has been successlly constructed and made operational by the CHORUS Collaboration for the CERN-WA95 experiment. It consists of a large emulsion target, a scintillating fiber tracker system with optoelectronics read-out, an air-core magnet, a set of trigger hodoscopes, a calorimeter based on the lead/scintillating-fiber technique, and a muon spectrometer. The design, construction and performance of the entire apparatus and of the different detectors are described.
Published: 1997

68. Charged-particle multiplicity and transverse energy measured in S-32 central interactions at 200 GeV per nucleon

Author: H. Tajima, T. Virgili, S. Lusso, M. Kazuno, Paolo Giubellino, Gilbert Poulard, Kimio Niwa, K. Hoshino, A. Di Bartolomeo, S. Simone, D.N. Tovee, L. Ramello, Koichi Kodama, A.C. Breslin, M.S. Sartori, V. Bisi, G. Rosa, G. Grella, M. Nomura, K. Niu, L. Riccati, S. Nakanishi, A. Marzari-Chiesa, S. Di Liberto, N. Ushida, Motoaki Miyanishi, M. J. Esten, M. G. Catanesi, G. Romano, H. Shibuya, Shigeki Aoki, Kazuma Nakazawa, M. T. Muciaccia, Franco Meddi, C. Sgarbi, D.H. Davis, F. Cassol, Massimo Masera, and M. Kobayashi
Subjects: Physics, Heavy-ion collisions, Particle physics, spectra, Nuclear Theory, Observable, Charged particle, Nuclear physics, Transverse plane, Pseudorapidity, Nuclear emulsion, Rapidity, Multiplicity (chemistry), ultrarelativistic energies, Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract: Interactions induced by 200 GeV per nucleon32S ions on heavy targets were selected by the HELIOS calorimeters and studied in nuclear emulsions. Global observables, such as charged particle multiplicity and transverse energy, were determined event-by-event. Multiplicity and transverse energy were measured as a function of the pseudorapidity over the large acceptance of the present experiment (0.6≤η≤5.5). A comparison of the experimental data with those provided by the event generators FRITIOF and VENUS shows remarkable differences both in the target spectator region and in the participant region. An attempt is made to interpret these discrepancies in terms of plausible mechanisms, like baryon-pair production or rescattering.
Published: 1995

69. The Electromagnetic and Hadronic Diffractive Dissociation of $^{16}O$ Ions

Author: K. Niu, D.H. Davis, S. Simone, G. Baroni, Sartori M, A. Marzari-Chiesa, G. Romano, M. T. Muciaccia, G. Rosa, A.C. Breslin, V. Bisi, S.K.C. Yuen, Colin Wilkin, M. A. Mazzoni, T. Virgili, K. Hoshino, Luciano Ramello, D.N. Tovee, C. Sgarbi, G. Grella, N. Ushida, Franco Meddi, S. Di Liberto, H. Shibuya, M. Kazuno, and Koichi Kodama
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Electromagnetic dissociation, Nuclear emulsions, Nuclear Theory, Hadron, Dissociation (chemistry), Eikonal approximation, Nuclear physics, Excited state, Nuclear emulsion, Atomic physics, Nuclear Experiment, Nucleon, Particle Physics - Experiment, Oxygen-16
Abstract: Events which satisfy the kinematics of p( 16 O,CHep), with low excitation energy in the (CHe) system and a low-energy recoil proton, have been identified in the interactions of 200 GeV/nucleon 16 O ions with nuclear emulsion. An eikonal DWIA estimate of the target A -dependence of strong-interaction diffractive dissociation suggests that, on the basis of these hydrogen data, most of the (CHe) final states, previously ascribed to electromagnetic dissociation on heavy nuclei, might rather be hadronic in character. This contamination is very much less important in the dominant (NH) channel.
Published: 1992

70. Final tau-neutrino results from the DONuT experiment

Author: E. Maher, S. Yoshida, B. D. Park, C. Rosenfeld, J. T. Rhee, Niki Saoulidou, Shigeki Aoki, C. Erickson, D. P. Ciampa, Ken Heller, W. P. Oliver, T. Patzak, H. Jiko, Koichi Kodama, K. Okada, M. Nakamura, D. J. Boehnlein, N. R. Stanton, Osamu Sato, Matt W. Graham, P. M. Yager, T. Hara, J. Sielaff, J. Trammell, P. Berghaus, J. Wilcox, J. S. Song, Jorge G. Morfin, T. Kafka, S. H. Chung, J. Schneps, B. Lundberg, N. Nonaka, Reinhard Schwienhorst, G. Tzanakos, C. S. Yoon, R. A. Sidwell, Roger Rusack, Toshiyuki Nakano, N. W. Reay, K. Niwa, R. A. Rameika, A. Kulik, C. Andreopoulos, K. Hoshino, M. A. Kubantsev, V. Paolone, T. Furukawa, Masahiro Komatsu, S. Takahashi, Walter Freeman, B. Baller, and N. Ushida
Subjects: Baryon, Physics, Nuclear and High Energy Physics, Particle physics, Meson, Tau neutrino, Hadron, Elementary particle, Nucleon, Lepton, Boson
Abstract: The DONuT experiment collected data in 1997 and published first results in 2000 based on four observed ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ charged-current (CC) interactions. The final analysis of the data collected in the experiment is presented in this paper, based on $3.6\ifmmode\times\else\texttimes\fi{}{10}^{17}$ protons on target using the 800 GeV Tevatron beam at Fermilab. The number of observed ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ CC events is 9 with an estimated background of 1.5 events, from a total of 578 observed neutrino interactions. We calculate the ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ CC cross section as a function of one parameter. Assuming ${\mathrm{D}}_{\mathrm{s}}$ mesons are the sole source for ${\ensuremath{\nu}}_{\ensuremath{\tau}}$, the energy-independent part of the total CC cross section can be parametrized as ${\ensuremath{\sigma}}^{\mathrm{const}}({\ensuremath{\nu}}_{\ensuremath{\tau}})=2.51{n}^{1.52}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}40}\text{ }\text{ }{\mathrm{cm}}^{2}\text{ }{\mathrm{GeV}}^{\ensuremath{-}1}$ for $n\ensuremath{\ge}4$, where $n$ is the parameter controlling the longitudinal part of the ${\mathrm{D}}_{\mathrm{s}}$ differential cross section of the form $d\ensuremath{\sigma}/d{x}_{F}\ensuremath{\propto}(1\ensuremath{-}|{x}_{F}|{)}^{n}$. The analysis could not distinguish between ${\ensuremath{\nu}}_{\ensuremath{\tau}}$ and ${\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$. The value of $n$ obtained from Pythia simulations, $n=6.1$, gives an estimated value of ${\ensuremath{\sigma}}^{\mathrm{const}}({\ensuremath{\nu}}_{\ensuremath{\tau}})=(0.39\ifmmode\pm\else\textpm\fi{}0.13\ifmmode\pm\else\textpm\fi{}0.13)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}38}\text{ }\text{ }{\mathrm{cm}}^{2}\text{ }{\mathrm{GeV}}^{\ensuremath{-}1}$.
Published: 2008

71. Electromagnetic dissociation of 200 GeV/N $^{16}$O and $^{32}$S ions in nuclear emulsions

Author: Colin Wilkin, D.H. Davis, Luciano Ramello, K. Hoshino, G. Rosa, Franco Meddi, G. Romano, D.N. Tovee, Paolo Giubellino, G. Baroni, A.C. Breslin, M. T. Muciaccia, S.K.C. Yuen, A. Marzari-Chiesa, H. Shibuya, C. Sgarbi, K. Niu, V. Bisi, S. Di Liberto, G. Grella, S. Simone, S. Dell'Uomo, K. Kodama, M. A. Mazzoni, N. Ushida, M. Kobayashi, and M. Kazuno
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Photon, Ioni ultrarelativistici, Hadron, Virtual particle, Alpha particle, Charged particle, Nuclear physics, electromagnetic dissociation, heavy ions, nuclear emulsion, Neutron, Atomic physics, Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract: This work represents the results of an experimental investigation of the electromagnetic dissociation of 200 GeV/nucleon 16 O and 32 S ions in nuclear emulsions. Exclusive channels involving charged fragments have been studied as a function of the energy released, and, assuming a Weizsacker-Williams spectrum of virtual photons, there is a good agreement with results for the (γ, p) processes obtained with real photons. However, the rates found for other processes are larger, in particular for the (γ, α) on both nuclei. The values of the total integrated absorption cross sections are generally larger than those obtained from real photon experiments but the extent of the discrepancy depends strongly upon which photon results are used in the comparison.
Published: 1990

72. An emulsion study of 16O and 32S interactions at 200 GeV per nucleon selected by transverse energy

Author: A. Gaidot, W.E. Sondheim, Sergei Smirnov, F. Lamarche, M. Kazuno, H. Tajima, Paolo Giubellino, B. V. Jacak, Richard Wigmans, G. Beaudoin, M. L. McCubbin, K. Dederichs, V.A. Sidorov, P. Yepes, V. Bisi, Y. Kobayashi, V. Kroh, Boris Dolgoshein, Kazuhito Tsukagoshi, S. Nakanishi, Yona Oren, G. Rosa, A. Marzari-Chiesa, L. Ramello, N. DiGiacomo, H. W. Bartels, Gilbert Poulard, S. Nilsson, M. Sekimoto, H. J. Specht, A.C. Breslin, A. Pfeiffer, Franco Meddi, Vincent Hedberg, Peter Fischer, E. Mazzucato, J. M. Beaulieu, D. Bettoni, J. Soltani, Makoto Kobayashi, H. Beker, Jurgen Schukraft, B. Erlandsson, Kazuma Nakazawa, H. Bøggild, J. P. Pansart, B. Sellden, B. Collick, D.C. Rahm, I. Blevis, S. Di Liberto, L. Riccati, I. Tserruya, K. Niu, H. Atherton, Sverker Johansson, R. Haglund, K. Nakamura, S. Almehed, S. Sartori, Rob Veenhof, Z. Fraenkel, Massimo Masera, J. A. Thompson, G. Vasseur, C.W. Fabjan, S. Watanabe, Ulf Mjörnmark, S. Muraviev, F. Piuz, Odette Benary, M. Clemen, R. Heifetz, H. W. Van Hecke, C. Leroy, M. A. Mazzoni, S. Dagan, C. Sgarbi, A. Drees, R. C. E. Devenish, H. Kitamura, M. Nomura, Peter Glassel, P. Aubry, Koichi Kodama, Venetios Polychronakos, Motoaki Miyanishi, Francois Corriveau, A. L. S. Angelis, S. Dell'Uomo, Y. M. Park, D. Lissauer, Hans Henrik Thodberg, L. Šándor, A. Lounis, P. L. McGaughey, N. Ushida, I. Stumer, J. Sunier, G. Baroni, H. Shibuya, S. Simone, M. J. Price, B. Lörstad, H. Kraner, Shigeki Aoki, G. Romano, Kimio Niwa, M. Seman, Alevtina Shmeleva, Torsten Paul Ake Åkesson, J.R. Dodd, D.H. Davis, H. En'yo, G. London, G. Grella, Göran Jarlskog, D.N. Tovee, N. Armenise, K. Hoshino, P. Depommier, Ulrich Goerlach, Matthias Neubert, Vladimir Tikhomirov, T. Ishigami, Y. Sirois, L. Olsen, V. Tcherniatin, M. J. Esten, A. Holscher, L. A. Hamel, F. Gibrat-Debu, M. Murray, H. Sletten, M. T. Muciaccia, Y. Umezawa, and W. E. Cleland
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Nuclear Theory, Hadron, Elementary particle, Nuclear emulsions, Nuclear physics, multiplicity, heavy ions, Nuclear Experiment, Physics, Ioni ultrarelativistici, Heavy Ion Physics, Multiplicity (mathematics), Charged particle, hybrid experiment, transverse energy, Condensed Matter::Soft Condensed Matter, Transverse plane, Emulsion, High Energy Physics::Experiment, Nucleon, Particle Physics - Experiment
Abstract: An emulsion study of 16O and 32S interactions at 200 GeV per nucleon selected by transverse energy
Published: 1990

73. The double associated production of charmed particles by the interaction of 350 mesons with emulsion nuclei

Author: G. Rosa, H. Tajima, M. Hazama, G. Crosetti, Shigeki Aoki, M. J. Esten, K. Chiba, Shigeki Tasaka, M. Barth, Franco Meddi, Luciano Ramello, Makoto Kobayashi, M. Miyanishi, K. Nakazawa, C. Sgarbi, J. H. Bartley, K. Niu, L. Riccati, M. Kazuno, M. T. Muciaccia, F.F. Heymann, Salvatore Nuzzo, S. Natali, K. Hoshino, K. Kodama, R. Roosen, F. Piuz, G. Bertrand-Coremans, A.C. Breslin, I. Tezuka, M. Coupland, A. Marzari-Chiesa, G. Baroni, F. Minakawa, Giovanni Carboni, Y. Yanagisawa, Y. Tsuneoka, H. Sletten, O. Yamakawa, D.H. Davis, G.J. Lush, Y. Isokane, M.A. Mazzoni, S. Simone, P. Musset, A. Montwill, A. Manfredini, D.C. Imrie, P. T. Trent, Y. Sato, V. Bisi, N. Ushida, E. Chesi, R. Arnold, Y. Maeda, F. Ruggieri, Paolo Giubellino, S. Dell'Uomo, G. Romano, S. Di Liberto, D. Gamba, W. Donnelly, Y. Tomita, C. Gerke, H. Sasaki, Gilbert Poulard, K. Niwa, H. Shibuya, D.N. Tovee, M. Ohashi, Mitsuhiro Nakamura, Heyd, Yvette, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and WA76
Subjects: Physics, Nuclear and High Energy Physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Meson, double charm production, CERN SpS, nuclear emulsions, Nuclear physics, Momentum, Emulsion, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Pi, Beam direction, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract: Evidence is reported for the simultaneous production of four charmed particles in interactions induced by 350 GeV/ c π − mesons in stacks of nuclear emulsions. The events were found during a search for beauty particles among a sample of about 200 interactions with candidates for charmed particles. The events selected required the presence of at least one muon with a high component of momentum transverse to the beam direction.
Published: 1987
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74. Some properties of charmed particles produced in π−-nucleus interactions

Author: H. Sasaki, D.N. Tovee, Mitsuhiro Nakamura, Paolo Giubellino, R. Roosen, Franco Meddi, L. Riccati, S. Watanabe, S. Diliberto, M. Barth, Y. Isokane, Masahiro Kobayashi, Y. Tomita, R. Arnold, Y. Sato, V. Bisi, I. Tezuka, C. Gerke, Donato Creanza, S. Simone, M.A. Mazzoni, S. Dell'Uomo, G. Baroni, A. Montwill, Y. Maeda, H. Tajima, S. Natali, M. De Vincenzi, M. Hazama, K. Niu, P. Pistilli, E. Chesi, Shigeki Aoki, K. Kodama, G. Rosa, Gilbert Poulard, Kimio Niwa, S. Petrera, G. Martellotti, F. Ruggieri, G. Bertrand-Coremans, Salvatore Nuzzo, Giovanni Carboni, N. Ushida, G. Romano, M. Kazuno, F. Piuz, K. Chiba, A.C. Breslin, H. Shibuya, Y. Tsuneoka, Shigeki Tasaka, A. Manfredini, D. Gamba, Y. Yanagisawa, K. Hoshino, O. Yamakawa, D.H. Davis, M. J. Esten, T. Shimizu, C. Sgarbi, Motoaki Miyanishi, M. T. Muciaccia, M. Ohashi, Gianni Penso, F. Minakawa, H. Sletten, A. Marzari-Chiesa, L. Ramello, P. Musset, and Kazuma Nakazawa
Subjects: Physics, Nuclear and High Energy Physics, Meson, charmed particles, Correlation distribution, Hadron, nuclear emulsions, Nuclear physics, medicine.anatomical_structure, WA75 collaboration, medicine, Statistical error, Nucleus, Particle Physics - Experiment
Abstract: The azimuthal correlation distribution of 102 charmed-particle pairs observed in the hybrid emulsion experiment WA75 is compared with theoretical predictions. The various pairs - (D − D 0 ), (D − D + ), (D 0 D 0 ) and (D + D 0 )-all s how, within statistical error, the same azimuthal correlation distribution, demonstrating its independence from the specific nature of the production channel. Among the decays of 150 charged charmed particles and 138 neutral ones seen, higher multiplicities are favoured for hadronic as opposed to semileptonic decays. The data are consistent with the muonic decays of charged D mesons proceeding through the channels (μ ± , v, K 0 ) and [μ ± , v, K ∗0 (892)] , the fraction through K 0 being 0.76±0.06.
Published: 1988
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75. Production characteristics of charmed particles in neutrino interactions

Author: D. Pitman, S. Conetti, Shigeki Tasaka, P. Cote, K. Moriyama, H. Fuchi, O. Yamakawa, G. Fujioka, Kazuhiro Nakazawa, B. McLeod, R. Matsui, J. S. Song, S. Errede, N. Torii, C. Yokoyama, Jaebeom Park, Kimio Niwa, O. Kusumoto, Mitsuhiro Nakamura, N. Ushida, C. J. D. Hébert, P. Mercure, A. Thibaudeau, K. Chiba, J. Yamato, Y. Noguchi, I. A. Lovatt, J. M. Dunlea, D. C. Bailey, K. Hoshino, Y. Maeda, S. G. Frederiksen, M. Gutzwiller, J. Yokota, Motoaki Miyanishi, S. Tatsumi, Y. Tsuzuki, K. Niu, Yasuhiro Homma, H. Okabe, H. Sasaki, Gordon J. Aubrecht, M. Ohashi, M. Turcotte, K. Reibel, K. Fujiwara, N. R. Stanton, J. F. Martin, K. Taruma, R. A. Sidwell, H. Fukushima, S. Y. Bahk, I. G. Park, H. Shibuya, T. Kondo, C. O. Kim, Y. Tomita, J. Trischuk, Y. Takahashi, M. Teranaka, T. S. Yoon, T. Hara, N. W. Reay, B. J. Stacey, J. Hebert, M. Kazuno, Shigeki Aoki, K. Kodama, S. Kuramata, H. Shibata, G. A. Oleynik, Y. Yanagisawa, A. Gauthier, J.D. Prentice, and T. Okusawa
Subjects: Quark, Physics, Nuclear and High Energy Physics, Strange quark, Particle physics, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Baryon, Nuclear physics, Charmed baryons, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment, Neutrino oscillation, Lepton
Abstract: Using a hybrid emulsion spectrometer installed in the Fermilab wide-band neutrino beam, we located a total of 3855 neutrino interactions in the fiducial volume of our target. For 122 charmed-particle decays found in these interactions, we present distributions of x , y , charm-muon angular projection, Feynman- X , and the fragmentation Z . We find that the number of strange quarks in the nucleon sea is 4.2±2.1±2.6% of the number of down quarks.
Published: 1988
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76. Experimental details on lifetime measurements of neutrino-produced charmed particles in a tagged emulsion spectrometer

Author: G. Fujioka, C. Yokoyama, D. Pitman, J. F. Martin, P. Sinervo, J.D. Prentice, K. Niu, J. Hebert, T. Hara, S. Y. Bahk, S. Kuramata, S. Errede, S. Lokanathan, H. Kimura, J. Harnois, N. Ushida, H. Okabe, J. Trischuk, H. Shibuya, K. Noshino, P. Davis, Ta Romanowski, Yasuhiro Homma, Y. Yanagisawa, H. Shibata, J. Fisher, Kimio Niwa, J. Yokota, Y. Tsuzuki, N. R. Stanton, Y. Noguchi, K. Moriyama, O. Kusumoto, H. Fukushima, N. W. Reay, Shigeki Tasaka, C. O. Kim, C. J. D. Hébert, M. Teranaka, D. C. Bailey, H. Fuchi, Y. Takahashi, T. S. Yoon, Motoaki Miyanishi, S. Tatsumi, R. A. Sidwell, Jaebeom Park, K. Reibel, J. Song, S. Conetti, M. Gutzwiller, B. McLeod, T. Kondo, and Y. Maeda
Subjects: Physics, Particle physics, Calorimeter (particle physics), Spectrometer, Physics::Instrumentation and Detectors, General Engineering, Short distance, Condensed Matter::Soft Condensed Matter, Nuclear physics, Magnet, Emulsion, High Energy Physics::Experiment, Nuclear emulsion, Fermilab, Neutrino, Nuclear Experiment
Abstract: A new type of hybrid appaatus, which consisted of an emulsion target and a magnet spectrometer, was successfully used in an experiment to measure lifetimes of charmed particles produced by the wide-band neutrino beam from 350 GeV protons at Fermilab. The emulsion target was essential to find short distance decay vertices andthe counter spectrometer was used both to localize the neutrino events in the emulsion and also to identify the particles from weak decays and those produced in the neutrino interactions. Newly introduced emulsion techniques such as the changeable sheet as a low background interface to couple the emulsion target with the counter spectrometer, and the single track followback method to locate interaction and decay vertices in the emulsion, were proved to be very powerful. Details of the experimental apparatus and of the method of analysis employed are described.
Published: 1984
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77. Lifetimes of the Charmed ParticlesD±,F±, andΛc+Produced by Neutrinos

Author: Jaebeom Park, R. A. Sidwell, K. Chiba, S. Conetti, M. Teranaka, M. Nakamura, Y. Maeda, I. A. Lovatt, Koji Nakazawa, D. Pitman, J. F. Martin, H. Shibuya, O. Kusumoto, G. Fujioka, M. Turcotte, K. Reibel, H. Fuchi, Yasuhiro Homma, Shigeki Tasaka, S. G. Frederiksen, K. Moriyama, N. R. Stanton, Y. Noguchi, C. Yokoyama, J. Trischuk, H. Okabe, J. Yamato, K. Hoshino, Motoaki Miyanishi, T. Hara, M. Gutzwiller, N. Ushida, K. Fujiwara, S. Tatsumi, M. Ohashi, C. O. Kim, S. Errede, J. M. Dunlea, Y. Takahashi, S. Kuramata, T. S. Yoon, J. Yokota, S. Y. Bahk, I. G. Park, H. Fukushima, N. W. Reay, T. Kondo, Y. Tsuzuki, C. J. D. Hébert, B. McLeod, J. S. Song, A. Gauthier, J.D. Prentice, K. Niu, Yasuhiro Tomita, Y. Yanagisawa, Kimio Niwa, H. Sasaki, D. C. Bailey, T. Okusawa, O. Yamakawa, R. Matsui, K. Taruma, P. Mercure, N. Torii, Gordon J. Aubrecht, Shigeki Aoki, K. Kodama, M. Kazuno, B. J. Stacey, J. Hebert, H. Shibata, and G. A. Oleynik
Subjects: Physics, Baryon, Meson, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron, Analytical chemistry, General Physics and Astronomy, Elementary particle, Fermion, Neutrino, Lambda, Boson
Abstract: We report final results for the D/sup + -/, F/sup + -/, and ..lambda../sub c//sup +/ lifetimes measured with a hybrid emulsion spectrometer in the wide-band neutrino beam at Fermilab. In total, 3886 neutrino and antineutrino interactions were located in the fiducial volume of the emulsion. From these interactions we have unambiguously identified 6 F/sup + -/ and 13 ..lambda../sub c//sup +/ decays, for which the fitted lifetimes are tau(F/sup + -/) = (2.6/sub -0.9//sup +1.6/) x 10/sup -13/ s and tau(..lambda../sub c//sup +/) = (2.0/sub -0.5//sup +0./ 7) x 10/sup -13/ s. 28 other decays are consistent with a D/sup +/ or D/sup -/ hypothesis. From these events, we obtain a D/sup + -/ lifetime of (11.1/sub -2.9//sup +4.4/) x 10/sup -13/ s.
Published: 1986
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78. New Result for the Lifetime of theD0Meson

Author: R. A. Sidwell, H. Shibata, J. Fischer, Y. Maeda, H. Kimura, J. Hebert, N. Ushida, P. Sinervo, H. Shibuya, S. Conetti, Y. Takahashi, T. S. Yoon, David Bailey, Saewoong Bahk, K. Moriyama, S. Lokanathan, C. J. D. Hébert, K. Reibel, M. Teranaka, G. Fujioka, Jaebeom Park, S. Kuramata, K. Hoshino, J.D. Prentice, K. Niu, S. Errede, D. Pitman, J. F. Martin, T. Hara, M. Gutzwiller, T. Kondo, H. Okabe, H. Fukushima, J. S. Song, C. Yokoyama, B. McLeod, H. Fuchi, Y. Yanagisawa, P. Davis, O. Kusumoto, N. R. Stanton, Y. Noguchi, Yasuhiro Homma, J. Harnois, N. W. Reay, Shigeki Tasaka, C. O. Kim, J. Trischuk, Kimio Niwa, Motoaki Miyanishi, S. Tatsumi, J. Yokota, Y. Tsuzuki, and Ta Romanowski
Subjects: Semileptonic decay, Nuclear physics, Physics, Particle physics, Particle decay, Pion, Meson, Hadron, General Physics and Astronomy, Elementary particle, Neutrino, Fermi Gamma-ray Space Telescope
Abstract: In an experiment measuring charmed-particle lifetimes with a hybrid emulsion spectrometer, 1248 neutrino and antineutrino interactions produced by the wide-band beam at Fermi National Accelerator Laboratory have been located. Twenty-one candidates for the decay of neutral charmed particles are found. The lifetime for the D/sup 0/ based on the sixteen constrained events of this sample is measured to be 2.3/sup +0.8//sub -0.5/ x 10/sup -13/ sec.
Published: 1982
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79. Measurement ofD+,F+, andΛc+Charmed-Particle Lifetimes

Author: Ta Romanowski, H. Shibata, P. Sinervo, P. Davis, K. Moriyama, Yasuhiro Homma, J. Fischer, Kimio Niwa, H. Fuchi, K. Hoshino, K. Reibel, D. Pitman, J. F. Martin, S. Kuramata, J. Yokota, S. Errede, Y. Tsuzuki, J. Hebert, Jaebeom Park, T. Hara, Y. Maeda, G. Fujioka, Y. Yanagisawa, J. S. Song, M. Teranaka, B. McLeod, C. Yokoyama, N. R. Stanton, S. Lokanathan, Y. Noguchi, H. Shibuya, Motoaki Miyanishi, S. Tatsumi, J. Harnois, M. Gutzwiller, S. Conetti, T. Kondo, N. W. Reay, H. Fukushima, R. A. Sidwell, J.D. Prentice, K. Niu, J. Trischuk, Saewoong Bahk, David Bailey, H. Okabe, H. Kimura, N. Ushida, Y. Takahashi, T. S. Yoon, C. J. D. Hébert, O. Kusumoto, Shigeki Tasaka, and C. O. Kim
Subjects: Semileptonic decay, Nuclear physics, Physics, Particle decay, Meson, Branching fraction, Hadron, General Physics and Astronomy, Elementary particle, Neutrino, Lambda
Abstract: From the analysis of 685 neutrino and antineutrino interactions in an emulsion target, fifteen candidates for the multiprong decay of charged charmed particles are found. This Letter presents liketimes for the D/sup + -/, F/sup + -/, and ..lambda../sub c//sup +/ states based on the fitted events of the sample.
Published: 1980
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80. Cross sections for neutrino production of charmed particles

Author: S. Conetti, Y. Maeda, S. G. Frederiksen, K. Chiba, Kazuhiro Nakazawa, Motoaki Miyanishi, R. Matsui, J. M. Dunlea, D. Pitman, Jaebeom Park, S. Tatsumi, K. Fujiwara, J. Yokota, H. Sasaki, Y. Tsuzuki, S. Y. Bahk, I. G. Park, H. Fuchi, Mitsuhiro Nakamura, A. Gauthier, J.D. Prentice, Y. Takahashi, T. S. Yoon, B. McLeod, Yasuhiro Homma, C. J. D. Hébert, K. Moriyama, S. Errede, K. Reibel, P. Mercure, N. R. Stanton, J. F. Martin, O. Kusumoto, Y. Noguchi, M. Turcotte, T. Okusawa, K. Niu, J. S. Song, S. Kuramata, G. Fujioka, P. Cote, C. Yokoyama, D. C. Bailey, M. Teranaka, A. Thibaudeau, H. Fukushima, Kimio Niwa, Y. Yanagisawa, K. Hoshino, Shigeki Tasaka, Gordon J. Aubrecht, M. Gutzwiller, O. Yamakawa, N. Torii, T. Hara, I. A. Lovatt, Y. Tomita, H. Okabe, M. Ohashi, J. Trischuk, H. Shibuya, N. W. Reay, R. A. Sidwell, N. Ushida, K. Taruma, J. Yamato, T. Kondo, C. O. Kim, B. J. Stacey, M. Kazuno, H. Shibata, G. A. Oleynik, Shigeki Aoki, K. Kodama, and J. Hebert
Subjects: Nuclear physics, Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle decay, Pair production, Muon, Branching fraction, Elementary particle, Neutrino, Lepton
Abstract: We have found 122 charmed-particle decays among 3855 neutrino interactions located in the fiducial volume of a hybrid emulsion spectrometer installed in the Fermilab wide-band neutrino beam. We obtain an average relative charmed-particle production cross section of σ(ν μ → c μ − ) σ(ν μ →μ − ) =4.9 −0.6 +0.7 % , at an average neutrino energy of 22 GeV. We also obtain a production rate of σ(ν μ → c c ν μ ) σ(ν μ →ν μ ) =0.13 −0.11 +0.31 % , if we assume that there was an undetected muon, a limit of σ(ν μ → c c μ − ) σ(ν μ → c μ − ) CL ) can be obtained. Other cross section ratios and limits are also presented.
Published: 1988
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81. Cross sections for charm production by neutrinos

Author: J.D. Prentice, D. Pitman, T. Hara, Shigeki Tasaka, T.A. Romanowski, K. Reibel, N. R. Stanton, Jaebeom Park, M. Miyanishi, H. Kimura, S. Conetti, J. Fukushima, S. Tatsumi, K. Hoshino, Y. Noguchi, C. J. D. Hébert, P. Davis, N. Ushida, S. Kuramata, O. Kusumoto, Yasuhiro Homma, G. Fujioka, K. Niu, K. Niwa, J. Trischuk, C. Yokoyama, N. W. Reay, H. Fuchi, D. C. Bailey, Y. Yanagisawa, T.S. Yoon, J. F. Martin, T. Kondo, R. A. Sidwell, P. Sinervo, H. Okabe, C. O. Kim, K. Moriyama, B. McLeod, S. Errede, Y. Takahashi, J. Song, Y. Maeda, M. Gutzwiller, J. Harnois, H. Shibuya, H. Shibata, J. Fischer, J. Yokota, Y. Tsuzuki, J. Hebert, S. Lokanathan, S. Y. Bahk, and M. Teranaka
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Cross section (physics), Particle physics, Pair production, Spectrometer, Charm (quantum number), Fermilab, Neutrino, Event (particle physics), Charged current
Abstract: The production of charmed particles has been measured using a hybrid emulsion spectrometer in the Fermilab wide-band neutrino beam. The relative cross section for charged current charmed particle production is σ(v → μ−c)/σ(v → μ−) = 6.5 ±1.91.8%, and the energy dependence of the cross section is presented. One event with charm pair production was observed. A limit of σ(v → μcc)/σ(v → μc) < 6% (90% CL) is found for the ratio of charged current pair and single charm production.
Published: 1983
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82. Analysis of 303 GeV/c proton-nucleus interactions tagged by high-energy γ-rays with emulsion chambers

Author: Kimio Niwa, S. Tasaka, Y. Yanagisawa, S. Kuramata, Y. Maeda, N. Ushida, K. Niu, K. Hoshino, and H. Fuchi
Subjects: Physics, High energy, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Nuclear physics, Baryon, medicine.anatomical_structure, Fragmentation (mass spectrometry), Excited state, Transverse momentum, Emulsion, medicine, Atomic physics, Nuclear Experiment, Nucleus, Fermi Gamma-ray Space Telescope
Abstract: Two emulsion chambers are exposed to 303 GeV/c proton beams at the Fermi National Accelerator Laboratory. The event structure of 70 proton-nucleus interactions tagged by high-energy γ-rays is analysed. Strong correlation is observed in the forward fragmentation region between high-energy γ-rays and a charged secondary particle with the highest transverse momentum (PT ≳ 1 GeV/c) in each event. Formation of a forward excited baryon and its decay into a charged baryon and γ-rays is one of the possible explanations of this effect. Correlation between the excited baryon and other produced particles in each interaction is also studied.
Published: 1978
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83. New Results for the Lifetimes of theD±,F±, andΛc+Particles

Author: D. Pitman, J. F. Martin, Y. Maeda, J. Yokota, S. Errede, Y. Tsuzuki, H. Fuchi, B. McLeod, Saewoong Bahk, H. Fukushima, J. S. Song, O. Kusumoto, Shigeki Tasaka, M. Teranaka, Ta Romanowski, Motoaki Miyanishi, S. Tatsumi, H. Okabe, C. O. Kim, Kimio Niwa, P. Sinervo, R. A. Sidwell, K. Reibel, T. Hara, Jaebeom Park, Y. Takahashi, T. S. Yoon, M. Gutzwiller, H. Kimura, N. Ushida, N. R. Stanton, J. Trischuk, Y. Noguchi, S. Lokanathan, J. Harnois, P. Davis, K. Hoshino, C. J. D. Hébert, Yasuhiro Homma, S. Conetti, H. Shibuya, K. Moriyama, G. Fujioka, T. Kondo, C. Yokoyama, J. Hebert, S. Kuramata, J.D. Prentice, Y. Yanagisawa, K. Niu, David Bailey, H. Shibata, N. W. Reay, and J. Fischer
Subjects: Nuclear physics, Physics, Particle decay, Pion, Meson, Hadron, Hyperon, General Physics and Astronomy, Elementary particle, Neutrino, Nucleon
Abstract: In an experiment measuring charmed-particle lifetimes with use of a hybrid-emulsion spectrometer in the wide-band neutrino beam at the Fermi National Accelerator Laboratory, 1248 neutrino and antineutrino interactions have been located. Twenty-three charged charm decay candidates have been reconstructed, from which we determine the lifetime of the D/sup + -/ to be 11.5/sub -3.5//sup +7.5/ x 10/sup -13/ s, that of the F/sup + -/ to be 1.9/sub -0.7//sup +1.3/ x 10/sup -13/ s, and that of the ..lambda../sub c//sup +/ to be 2.3/sub -0.6//sup +1.0/ x 10/sup -13/ s.
Published: 1983
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84. Analysis of proton-nucleus and helium-nucleus collisions at energies greater than 10 TeV

Author: H. Kimura, S. Kuramata, V. D. Hopper, Y. Maeda, Y. K. Lim, H. Shibuya, Kimio Niwa, K. Niu, N. Ushida, K. Hoshino, H. Fuchi, Y. Yanagisawa, Shigeki Tasaka, and Yoshihiro Sato
Subjects: Physics, Nuclear reaction, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Alpha particle, Central region, Electromagnetic radiation, Synthetic materials, Nuclear physics, medicine.anatomical_structure, medicine, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, Nucleon, Nucleus
Abstract: We have studied the characteristics of inclusive ..gamma..-ray and charged-meson production in proton-lucite collisions at 20 TeV, and helium-lucite collisions at 7 TeV per nucleon. Characteristics of multiple-production phenomena in these energy regions were fully analyzed and compared with those observed in lower-energy regions. The main results are as follows. (1) A substantial increase of charged secondaries in proton-lucite collisions is observed in the central region as the primary energy increases from 400 GeV to 19 TeV. (2) The average multiplicity in helium-lucite collisions is nearly twice as large as that in proton-lucite collisions at the same energy per nucleon. (3) While no difference is observed of the average values of P/sub T/ and P/sub T/ /sup 2/ for P/sub T/ 1.0 GeV/c) substantially increases above 10 TeV. (4) The fractional-energy distribution of ..gamma.. rays in the range of 0.10.1.
Published: 1982
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85. Lifetime ofD0Charmed Mesons Produced in Neutrino Interactions

Author: J.D. Prentice, Y. Maeda, S. G. Frederiksen, K. Chiba, J. Yamato, T. Okusawa, H. Shibuya, D. Pitman, Y. Noguchi, K. Fujiwara, H. Fukushima, P. Mercure, K. Niu, Yasuhiro Homma, Shigeki Tasaka, T. Kondo, C. O. Kim, N. Ushida, Kimio Niwa, G. Fujioka, Shigeki Aoki, Mitsuhiro Nakamura, T. Hara, M. Kazuno, K. Kodama, K. Moriyama, O. Kusumoto, C. Yokoyama, Motoaki Miyanishi, J. S. Song, S. Tatsumi, K. Taruma, R. A. Sidwell, H. Fuchi, K. Hoshino, S. Kuramata, N. Torii, O. Yamakawa, H. Shibata, G. A. Oleynik, A. Gauthier, Y. Takahashi, T. S. Yoon, C. J. D. Hébert, N. W. Reay, S. Errede, Y. Yanagisawa, B. J. Stacey, J. M. Dunlea, D. C. Bailey, Kazuhiro Nakazawa, J. Yokota, Jaebeom Park, M. Gutzwiller, J. F. Martin, J. Hebert, Y. Tsuzuki, B. McLeod, M. Turcotte, K. Reibel, N. R. Stanton, M. Teranaka, S. Y. Bahk, I. G. Park, Y. Tomita, J. Trischuk, I. A. Lovatt, S. Conetti, H. Okabe, M. Ohashi, H. Sasaki, R. Matsui, and Gordon J. Aubrecht
Subjects: Nuclear physics, Physics, Particle physics, Meson, Hadron, General Physics and Astronomy, Elementary particle, Fermilab, Neutrino, Neutrino beam, Boson
Abstract: We report final results for the ${D}^{0}$ lifetime measured with a hybrid emulsion spectrometer in the wide-band neutrino beam at Fermilab. In a total of 3886 neutrino and antineutrino interactions located in the emulsion fiducial volume, we have found 58 ${D}^{0}$ decays, from which we determine the lifetime to be (${4.3}_{\ensuremath{-}0.5\ensuremath{-}0.2}^{+0.7+0.1}$) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}13}$ s.
Published: 1986
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86. Limits toνμ,νe→ντOscillations andνμ,νe→τ−Direct Coupling

Author: K. Moriyama, J. M. Dunlea, Shigeki Aoki, K. Taruma, J. Yokota, D. Pitman, J. F. Martin, Jaebeom Park, I. A. Lovatt, Y. Takahashi, B. J. Stacey, B. McLeod, Y. Tsuzuki, David Bailey, H. Sasaki, T. S. Yoon, N. W. Reay, A. Gauthier, J.D. Prentice, K. Niu, H. Okabe, Y. Maeda, T. Okusawa, Kimio Niwa, M. Ohashi, M. Teranaka, S. Errede, H. Shibuya, R. A. Sidwell, R. Matsui, M. Gutzwiller, J. Trischuk, P. Mercure, M. Kazuno, K. Hoshino, T. Kondo, S. Conetti, K. Chiba, J. Yamato, N. Ushida, Saewoong Bahk, O. Kusumoto, J. Hebert, Motoaki Miyanishi, S. G. Frederiksen, S. Tatsumi, Shigeki Tasaka, M. Nakamura, K. Kodama, Yasuhiro Tomita, Yasuhiro Homma, H. Shibata, G. A. Oleynik, G. Fujioka, Katsuaki Fujiwara, H. Fuchi, C. Yokoyama, I. G. Park, C. O. Kim, O. Yamakawa, N. Torii, C. J. D. Hébert, M. Turcotte, S. Kuramata, Y. Yanagisawa, N. R. Stanton, Y. Noguchi, H. Fukushima, Gordon J. Aubrecht, J. S. Song, Koji Nakazawa, K. Reibel, and T. Hara
Subjects: General Physics and Astronomy
Published: 1986
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87. The production of charmed particles in high-energy 16O-emulsion central interactions

Author: S. Aoki, A.C. Breslin, D.H. Davis, K. Hoshino, R. Ihara, M. Imada, T. Ishigami, M. Kazuno, H. Kitamura, M. Kobayashi, K. Kodama, Y. Maeda, A. Marzari-Chiesa, M. Masera, M.A. Mazzoni, F. Meddi, F. Minakawa, M. Miyanishi, M.T. Muciaccia, K. Nakamura, M. Nakamura, S. Nakanishi, K. Nakazawa, K. Niu, K. Niwa, M. Nomura, H. Okabe, G. Poulard, G. Romano, G. Rosa, Y. Sato, H. Shibuya, S. Simone, H. Tajima, S. Tasaka, M. Teranaka, I. Tezuka, D.N. Tovee, K. Tsukagoshi, N. Ushida, and J. Yokota
Subjects: Physics, Nuclear reaction, Nuclear and High Energy Physics, High energy, Nuclear Theory, Particle physics, Elementary particle, Nuclear emulsions, Engineering physics, charm production, Nuclear physics, heavy ions, nuclear amulsions, Emulsion, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract: The production of charmed particles has been detected in 200 GeV per nucleon 16 O-emulsion central interactions. Their production cross section in elementary nucleon-nucleon processes has been estimated to be charm = [14.1±9.3(stat.) −8.4 +5.6 (syst.)] μ b.
Published: 1989
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88. Erratum to: Observation of a pair decay of short-lived neutral particles produced in 400 GeV/c proton interactions

Author: N. Ushida, H. Fuchi, K. Hoshino, S. Kuramata, K. Niu, K. Niwa, H. Shibuya, S. Tasaka, Y. Yanagisawa, Y. Maeda, and H. Kimura
Subjects: General Physics and Astronomy
Published: 1978
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89. Direct observation of charmed-particle pairs produced in 340 GeV/c negative-pion interactions in an emulsion chamber

Author: Kimio Niwa, Motoaki Miyanishi, Y. Yanagisawa, K. Hoshino, H. Kimura, K. Niu, N. Ushida, H. Shibuya, H. Fuchi, Y. Maeda, and Shigeki Tasaka
Subjects: Physics, Pion, Hadron, Direct observation, General Physics and Astronomy, Mathematical physics
Abstract: (1) E . H . S . ]~URHOP, D. H . DAVIS, D. N. TOVEE, D. PETERSEN, ~k. L. ]:~EAD, G. COREMANS=BERTRA~TI), J. SACTON, P, VILAIN, t. BRESLIN, A. ~IONTWILL, i~. ~. ~OBERTS, D. A. GARBUTT, F. ~:~. STANNARD, G. BLAES, R . KLEIN, F . M. SCt~I~IITT, G. BARONI, F . CERADINI, M. CONVERSI, L. FEDERICI, M. L. FERRER, S. (]ENTILE, S. DI LIBERTO, S. PETRERA, G. ROMANO, I~. SANTONICO, G. BASSOMPIERRE, M. JUNG, N. KURTZ, ~[. PATY a n d M. SCHNEEGANS: Phys. Zett. B, 65, 299 (1976); D. ALLASIA, (J. ANGELINI, P . ]3AGNAIA, G. BARONI, J . H . BARTLEY, G. BERTRAND-CoREMANS, V. BISI, ~k. BRESLIN, E. H . S. BURttOP, F. CARENA, R . CASALI, G. CIAPETTI, ~/n CONVERSI, D. I t . DAVIS, S. DI LIEERTO, t~. FANTECRI, ]~[. b . FERRER, C. FRANZINETTI, D. GAM:BA, L. GODlVRE~ r, D. KEANE, E. LAMANNA, A. MARZARI, F . ]~[ARZANO, t . MONT~VILL, A. NAPPI, C. PALAZZI-CERR1NA, ~ . PAZZI, S. PETRERA, G. 51. PIERAZZINI, G. I~OMANO, A. ROMERO, S. SACTON, R. SANTONICO, R. SEVEE, F. I(. STANNARD, P~ TOLUN, D. N. TOVEE, P . VILAIN, J . H . ~VICKENS a n d G. ~r Phys. JSett. B, 87, 287 (1979); N. USHIDA, T. KONDO, G. FUJIOKA, H . FUKUSHI1VIA, Y. TAKAttASHI, S. TATSITMI, C. YOKOYAMA, Y. HOMMA, Y. TSUZUKI, S. BAHK, C. ElM, J . PARK, J . SONG, D. BAILEY, S. CONETTI, J . FISCHER, J . TRISCHUK, H . FUGHI, K . HOSHINO, M. MI~CANISttI, ] ( . NIU, K . NIWA, H . SHIBUYA, Y. YANAGISA~VA, S. ERREDE, M. GUTZWILLER, S. KURAMATA, N. ~vV. REAY, K . I~EIREL, T. A. ]~O~r l~. SIDWELL, N. T. STANTON, K . MORIYAMA, H . SHIBATA, W. HARA, 0 . KUSUMOTO, Y. NOGUCHI, M. TEEANAKA, ]~. OKABE, J . YOKOTA, J . HARNOIS, N. ]=IERBERT, J . HEBERT, S. LOKANATHAN, B. MOLEOD, S. TASAKA, P. DAVIS, J . MARTIN, D. PITMAN, J . D. PRENTICE, P . SINERVO, T. S. YOON, I t . KIMURA a n d Y. MAEDA : Phys. Rev. Left., 45, 1049, 1053 (1980). The other experiments of charmed particles exposed to hadron
Published: 1981
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90. Measurement of theD0Lifetime

Author: C. J. D. Hébert, S. Errede, S. Kuramata, Motoaki Miyanishi, S. Conetti, K. Hoshino, M. Gutzwiller, D. Pitman, J. F. Martin, Y. Yanagisawa, T. Kondo, Y. Maeda, Jaebeom Park, S. Tatsumi, J. S. Song, Ta Romanowski, O. Kusumoto, Shigeki Tasaka, P. Davis, Y. Takahashi, B. McLeod, R. A. Sidwell, T. S. Yoon, C. O. Kim, N. R. Stanton, K. Reibel, Yasuhiro Homma, T. Hara, K. Moriyama, Y. Noguchi, Saewoong Bahk, H. Kimura, David Bailey, N. Ushida, Kimio Niwa, P. Sinervo, H. Okabe, G. Fujioka, C. Yokoyama, H. Shibuya, H. Fukushima, J. Yokota, Y. Tsuzuki, N. W. Reay, J.D. Prentice, K. Niu, J. Harnois, H. Fuchi, J. Hebert, S. Lokanathan, M. Teranaka, H. Shibata, J. Fischer, and J. Trischuk
Subjects: Nuclear physics, Physics, Particle physics, Particle decay, Spectrometer, Meson, Hadron, General Physics and Astronomy, Elementary particle, Neutrino, Particle identification, Fermi Gamma-ray Space Telescope
Abstract: In an experiment measuring charmed-particle lifetimes with a hybrid emulsion spectrometer, 685 neutrino and antineutrino interactions produced by the wide-band beam at Fermi National Accelerator Laboratory have been located. These events have been carefully searched for visible decays. This letter reports the seven neutral decays which are consistent with a D/sup 0/ hypothesis and determine a lifetime of 1.00/sup +0.52//sub -0.31/ x 10/sup -3/ sec for this charmed state.
Published: 1980
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91. Direct observation of a pair decay of neutral charmed particles produced in proton interaction

Author: S. Tasaka, Y. Maeda, H. Fuchi, H. Shibuya, K. Hoshino, Y. Yanagisawa, H. Kimura, N. Ushida, K. Niu, and S. Kuramata
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Proton, Direct observation, Life time, Mass spectrum, macromolecular substances
Abstract: The second evidence of a pair decay of charmed particles has been obtained in an emulsion chamber exposed to 400 GeV c protons. The life time and production cross section of the charmed particles have been evaluated as several times 10 −13 s and several tens of microbarns.
Published: 1979
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92. X-Particle Production in 205 GeV/c Proton Interactions

Author: Eiko Mikumo, Shigeki Tasaka, S. Kuramata, Y. Maeda, Kiyoshi Niu, Kimio Niwa, K. Hoshino, and N. Ushida
Subjects: Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Proton, Particle
Published: 1975
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93. Upper Limits toνμ−ντOscillation andνμ−τCoupling

Author: J. Yokota, C. J. D. Hébert, M. Gutzwiller, B. McLeod, S. Errede, Y. Tsuzuki, S. Conetti, Y. Maeda, D. Pitman, J. F. Martin, P. Sinervo, K. Reibel, T. Hara, Kimio Niwa, J. S. Song, N. R. Stanton, K. Hoshino, Y. Noguchi, G. Fujioka, H. Shibuya, Y. Takahashi, C. Yokoyama, T. S. Yoon, P. Davis, Motoaki Miyanishi, S. Tatsumi, Yasuhiro Homma, J. Trischuk, Jaebeom Park, T. Kondo, S. Lokanathan, Saewoong Bahk, K. Moriyama, J. Hebert, R. A. Sidwell, Ta Romanowski, H. Okabe, H. Shibata, J. Fischer, H. Fukushima, David Bailey, O. Kusumoto, Shigeki Tasaka, C. O. Kim, J. Harnois, J.D. Prentice, K. Niu, H. Fuchi, H. Kimura, N. Ushida, N. W. Reay, M. Teranaka, S. Kuramata, and Y. Yanagisawa
Subjects: General Physics and Astronomy
Published: 1981
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94. Charmed hadron production by neutrinos

Author: H. Okabe, S. Y. Bahk, J. Hebert, C. J. D. Hébert, D. C. Bailey, P. Sinervo, K. Moriyama, F. Fujioka, H. Fuchi, O. Kusumoto, Shigeki Tasaka, C. O. Kim, J.D. Prentice, K. Niu, H. Shibata, C. Yokohama, R. A. Sidwell, T. Hara, J. Fischer, J. Harnois, D. Pitman, J. F. Martin, H. Shibuya, K. Hoshino, M. Teranaka, S. Conetti, K. Reibel, J. Song, Jaebeom Park, Y. Takahashi, T. S. Yoon, S. Lokanathan, T. Kondo, P. Davis, H. Kimura, Y. Maeda, N. Ushida, J. Trischuk, Yasuhiro Homma, J. Yokota, H. Fukushima, Y. Tsuzuki, S. Tatsumi, Kimio Niwa, N. W. Reay, Ta Romanowski, M. Miyanashi, N. R. Stanton, Y. Noguchi, S. Errede, S. Kuramata, Y. Yanagisawa, M. Gutzwiller, and B. McLeod
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Spectrometer, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Hadron, Neutrino beam, Nuclear physics, symbols.namesake, Fragmentation (mass spectrometry), symbols, Feynman diagram, High Energy Physics::Experiment, Fermilab, Neutrino, Nuclear Experiment
Abstract: Charmed hadron production has been studied using a hybrid emulsion spectrometer in the Fermilab wide-band neutrino beam. The relative rates of D0, D+, F+, and Λ+c production have been measured - the fraction of D mesons is 69 ± 8 10 % . Momentum, transverse momentum, Feynman X, and fragmentation (Z) distributions are presented. The mean Z for charmed hadrons is 0.59 ± 0.03 (±0.03). Charmed target fragments have been observed.
Published: 1983
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95. X-particles and their backgrounds in 400 GeV/c proton interactions

Author: Kimio Niwa, H. Kimura, N. Ushida, K. Hoshino, Y. Yanagisawa, Y. Maeda, S. Kuramata, S. Tasaka, K. Niu, and H. Fuchi
Subjects: Nuclear physics, Physics, Proton, Atomic physics, Nuclear Experiment, Beam (structure), Fermi Gamma-ray Space Telescope
Abstract: Seven emulsion chambers were exposed to the 400 GeV/c proton beam at the Fermi National Accelerator Laboratory in order to search for further evidence of the X-particles, massive and short-lived particles. 17488 tracks of charged secondary particles from 1008 interactions were examined. Out of 21.8 m of track length followed, 58 secondary phenomena were observed in the vicinity of the beam interactions. Observed secondary phenomena were analysed statistically to extract the signal of the X-particle from the backgrounds. One statistical candidate was found in addition to one semi-leptonic multibody decay of the X-particle. Production cross-section of the X-particles at 400 GeV/c was estimated to be a few tens of microbarns.
Published: 1979
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96. Direct observations of the decay of beauty particles into charm particles

Author: V. Bisi, I. Tesuka, K. Chiba, Motoaki Miyanishi, S. Natali, G. Romano, S. Dell'Uomo, V. Alpe, M. Ohashi, F. Piuz, F.F. Heymann, R. Arnold, A. Marzari-Chiesa, Y. Maeda, F. Ruggieri, J. H. Bartley, Franco Meddi, M. Hazama, Shigeki Aoki, C. Sgarbi, Kimio Niwa, A.C. Breslin, B.G. Duff, C. Gerke, G. Baroni, Y. Kodama, P. T. Trent, Y. Yanagisawa, K. Niu, Salvatore Nuzzo, G. Bertrand-Coremans, W. Bonnelly, Gilbert Poulard, Y. Tsuneoka, Yasuhiro Tomita, L. Riccati, M. A. Mazzoni, E. Chesi, M. Kazuno, M. Nakamura, Shigeki Tasaka, Luciano Ramello, Yoshihiro Sato, G. Rosa, M.J. Esten, N. Ushida, Giovanni Carboni, M. T. Muciaccia, Kazuma Nakazawa, A. Montwill, M. Barth, O. Yamakawa, G.J. Lush, Y. Isokane, D.H. Davis, Dn Tovee, G. Crosetti, M. Coupland, J. P. Albanese, G.S. Cook, R. Roosen, P. Musset, D.C. Imrie, K. Hoshino, H. Shibuya, S. Di Liberto, D. Gamba, H. Sasaki, S. Simone, D. Bertrand, H. Sletten, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, media_common.quotation_subject, Direct observation, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Nuclear physics, Particle decay, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], nuclear emulsion, Muon spectrometer, Beauty, Physique des particules élémentaires, caer sps, beauty particle decay, High Energy Physics::Experiment, Nuclear emulsion, Charm (quantum number), Nuclear Experiment, Event (particle physics), Particle Physics - Experiment, media_common
Abstract: The associated production of a pair of beauty particles B- and B0 by a 350 GeV π- interaction has been observed in an emulsion target inserted in an array of silicon microstrip detectors. Both beauty particles decay into charm particles, both of which are also observed to decay in the emulsion. Two negative muons were identified and their momenta measured in a large muon spectrometer. One muon has a pT of 1.9 GeV/c and is associated with a beauty particle decay. The other, with a pT of 0.45 GeV/c is associated with a charm particle decay. The flight times of the two beauty particles are respectively (0.8 ± 0.1) × 10-13 s and (5+2 -1) × 10-13 s. Alternative interpretations of this event have negligible probability, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1985
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97. 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).

98. Measurement of the Lifetimes of the Charmed D+, Do and F+ Mesons and Λc+ Charmed Baryon

Author: N. Ushida, T. Kondo, G. Fujioka, H. Fukushima, Y. Takahashi, S. Tatsumi, C. Yokoyama, Y. Homma, Y. Tsuzuki, S. Bahk, C. Kim, J. Park, J. Song, D. Bailey, S. Conetti, J. Fischer, J. Trischuk, H. Fuchi, K. Hoshino, M. Miyanishi, K. Niu, K. Niwa, H. Shibuya, Y. Yanagisawa, S. Errede, M. Gutzwiller, S. Kuramata, N. W. Reay, K. Reibel, T. A. Romanowski, R. Sidwell, N. R. Stanton, K. Moriyama, H. Shibata, T. Hara, O. Kusumoto, Y. Noguchi, M. Teranaka, H. Okabe, J. Yokota, J. Harnois, C. Hebert, J. Hebert, S. Lokanathan, B. McLeod, S. Tasaka, P. Davis, J. Martin, D. Pitman, J. D. Prentice, P. Sinervo, T. S. Yoon, H. Kimura, Y. Maeda, Hugh C. Wolfe, R. S. Panvini, M. S. Alam, and S. E. Csorna
Subjects: Physics, Nuclear physics, Baryon, Particle physics, Meson, Physics::Instrumentation and Detectors, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Fermilab, Neutrino beam, Nuclear Experiment
Abstract: Recent results from a hybrid emulsion experiment in the Fermilab wide‐band neutrino beam of the measurement of the lifetimes of the charmed D+, Do and F+ mesons and Λc+ charmed baryon are presented.
Published: 1982
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99. Technical aspects – design, scanning and energy measurement in small emulsion chambers

Author: S. Tasaka, Y. Maeda, K. Hoshino, H. Shibuya, H. Fuchi, N. Ushida, Y. Yanagisawa, K. Niwa, S. Kuramata, and K. Niu
Subjects: Physics, Physics::Instrumentation and Detectors, business.industry, Scattering, Detector, Particle detector, Quantitative Biology::Cell Behavior, Condensed Matter::Soft Condensed Matter, Nuclear physics, Optics, Stack (abstract data type), Emulsion, Measuring instrument, Particle, Nuclear emulsion, Nuclear Experiment, business
Abstract: Technical aspects of small emulsion chamber are discussed. Emulsion chamber is a detector which consists of nuclear emulsion plates and other light or heavy material plates. While a pure emulsion stack is likened to a micro bubble chamber, it could be compared to a complex counter detector assembly with super high spatial resolving power. It is possible to measure particle momenta by relative scattering method and trace back γ ray cascades to vertices a few centimeters away. Charged secondary tracks could be examined for sudden changes in direction several centimeters from production vertices. ’’Invention’’ of the emulsion chamber enabled one to extend the power of pure emulsions to study very high energy interactions to tens of TeV, and it opend a new windnow for search of short‐lived particles.
Published: 1979
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100. An attempt to observe directly beauty particles in nuclear emulsions

Author: O. Yamakawa, D.C. Imrie, R. Arnold, Y. Maeda, M. Barth, D.H. Davis, F. Ruggieri, G. Schorochoff, N. Ushida, I. Tezuka, F.F. Heymann, D.G. Davis, O. Erriquez, K. Niu, J. K. Downes, A. Montwill, A.C. Breslin, Shigeki Tasaka, R. Roosen, A. O'Connor, Salvatore Nuzzo, Motoaki Miyanishi, S. Natali, I. G. Roberts, G. Rosa, P. Musset, Y. Tsuneoka, Francesco Romano, M. Calicchio, H. Shibuya, I. Gjerpe, D. Bertrand, Jean Sacton, Alessandra Romero, A. Manfredini, P. Lavopa, L. Di Ciaccio, Gilbert Poulard, Mitsuhiro Nakamura, G. Romano, S. Di Liberto, M. Ohashi, M. J. Esten, P. T. Trent, D. Gamba, K. Niwa, J. P. Albanese, L. Riccati, N. Armenise, H. Sletten, G.J. Lush, Y. Isokane, N. Yanagisawa, D.N. Tovee, M. Hazama, D. Allasia, V. Bisi, M. J. Price, G. Baroni, B.G. Duff, L. Ramello, A. Marzari-Chiesa, G. Bertrand-Coremans, F. Sebastiani, C. Matteuzzi, F.R. Stannard, Giorgio Maggi, J. H. Wickens, S. Petrera, M. Coupland, Franco Meddi, K. Hoshino, R. Santonico, F. Piuz, Yoshihiro Sato, M. T. Muciaccia, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), NA19, and Heyd, Yvette
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Instrumentation and Detectors, media_common.quotation_subject, Direct observation, Engineering physics, nuclear emulsions, Nuclear physics, beauty particles, cern sps, Cascade, Beauty, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Particle Physics - Experiment, media_common
Abstract: An attempt at the direct observation of the cascade decay of beauty particles, produced by π- of 350 GeV/c leading to 3 muons or 4 muons in the final state, has been made in an emulsion/counter hybrid experiment at CERN. Under the assumption that the lifetime of beauty particles is of the order of 10-13s the non-observation of any candidates provides an upper limit for beauty production of ∼90 nb at the 90% confidence level., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1983

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