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1. Final results on oscillation from the CHORUS experiment

Author

O. Melzer, K. Niu, T. Wolff, N. Nonaka, Antonio Ereditato, V. Shamanov, C. Sirignano, M. van Beuzekom, Yoshihiro Sato, T. Okusawa, P. Strolin, R. Santacesaria, Alexandre Rozanov, H. Shibuya, E. Pesen, G. Brooijmans, B. Van de Vyver, D. Bonekämper, Piero Zucchelli, S. Di Liberto, M. Kazuno, J. Hérin, Ramazan Sever, Mitsuhiro Nakamura, P. Gorbunov, K. Nakamura, Pierre Vilain, T. Hara, A. Mailov, Mathieu Doucet, G. Piredda, Y. Ishii, M. Messina, M. A. Mazzoni, J. Panman, M. De Serio, J. Kawada, A. Maslennikov, G. Romano, M. Serin-Zeyrek, A. Bülte, M. de Jong, E. Di Capua, Gulsen Onengut, Y. Kotaka, G. Fiorillo, D. Rondeshagen, Toshiyuki Nakano, N. Ushida, Mehmet Zeyrek, Shigeki Aoki, I. Tezuka, S. Buontempo, E. Arik, G. De Lellis, P. Migliozzi, K. Narita, S. Simone, E. Barbuto, N. Armenise, Michiyuki Chikawa, F. Di Capua, J. Konijn, S. Kalinin, U. Dore, V. Palladino, M. Vander Donckt, T. Kozaki, Ivana Hristova, C.A.F.J. van der Poel, L. Ludovici, Nicola D'Ambrosio, Mihail Chizhov, E. Eskut, C. Luppi, Masahiro Komatsu, T. Toshito, A. Artamonov, R. Tsenov, H. Meinhard, D. Frekers, David Saltzberg, Antonio Capone, D. Kolev, N. Bruski, I.M. Papadopoulos, G. Grégoire, P. F. Loverre, Koichi Kodama, S. Sorrentino, L. Scotto Lavina, S. Ogawa, Jean-Paul Fabre, J. Goldberg, A. Satta, C. S. Yoon, Henry T. Wong, Denis Favart, M. Litmaath, M. T. Muciaccia, T. Kawamura, Ch. Weinheimer, Rudolf Oldeman, R. van Dantzig, Ilya Tsukerman, J. W. E. Uiterwijk, M. G. Catanesi, G. De Rosa, V. Khovansky, A. Kayis-Topaksu, D. De Pedis, K. Winter, Murat Guler, G. Grella, Y. Obayashi, K. Niwa, Th. Delbar, H. Øverȧs, David Cussans, Motoaki Miyanishi, W. Flegel, K. Hoshino, F. R. Spada, U. Kose, E. Niu, F. Cassol, G. Rosa, Gaston Wilquet, P. Tolun, S. Ricciardi, I. Makhlioueva, J. S. Song, Cristiano Bozza, E. Radicioni, Jürgen Brunner, Osamu Sato, L. Vivolo, A. G. Cocco, Jan Visschers, P. Righini, Biagio Saitta, V. Tioukov, A. Marotta, Çukurova Üniversitesi, Eskut, E., Kayis Topaksu, A., Önengüt, G., van Beuzekom, M. 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., Sever, R., Tolun, P., Zeyrek, M. T., Armenise, N., Cassol, F., Catanesi, M. G., De Serio, M., Muciaccia, M. T., Radicioni, E., Righini, P., Simone, S., Vivolo, L., Bülte, A., Winter, K., Vander Donckt, M., Van de Vyver, B., Vilain, P., Wilquet, G., Saitta, B., Di Capua, E., Luppi, C., Ishii, Y., Kazuno, M., Ogawa, S., Shibuya, H., Brunner, J., Chizhov, M., Cussans, D., Doucet, M., Fabre, J. P., Flegel, W., Hristova, I. R., Kawamura, T., Kolev, D., Litmaath, M., Meinhard, H., Niu, E., Øverȧs, H., Panman, J., Papadopoulos, I. M., Ricciardi, S., Rozanov, A., Saltzberg, D., Tsenov, R., Uiterwijk, J. W. E., Weinheimer, C., Wong, H., Zucchelli, P., Goldberg, J., Chikawa, M., Arik, E., Mailov, A. A., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Brooijmans, G., Delbar, T., Favart, D., Grégoire, G., Hérin, J., Kalinin, S., Makhlioueva, I., Artamonov, A., Gorbunov, P., Khovansky, V., Shamanov, V., Tsukerman, I., Bonekämper, D., Bruski, N., Frekers, D., Rondeshagen, D., Wolff, T., Hoshino, K., Kawada, J., Komatsu, M., Kotaka, Y., Kozaki, T., Miyanishi, M., Nakamura, M., Nakano, T., Narita, K., Niu, K., Niwa, K., Nonaka, N., Obayashi, Y., 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., Palladino, V., Scotto Lavina, L., Strolin, P., Tioukov, V., Nakamura, K., Okusawa, T., Capone, A., De Pedis, D., Di Liberto, S., Dore, U., Loverre, P. F., Ludovici, L., Maslennikov, A., Mazzoni, M. A., Piredda, G., Rosa, G., Santacesaria, R., Satta, A., Spada, F. R., Barbuto, E., Bozza, C., Grella, G., Romano, G., Sirignano, C., Sorrentino, S., Sato, Y., and Tezuka, I.

Subjects
Physics, Nuclear and High Energy Physics, Muon, biology, Oscillation, Chorus, Weinberg angle, biology.organism_classification, Tau lepton appearance, Nuclear physics, Neutrino, Neutrino oscillation, Lepton, Event reconstruction
Abstract

The final oscillation analysis of the complete set of data collected by CHORUS in the years 1994-1997 is presented. Reconstruction algorithms of data extracted by electronic detectors were improved and the data recorded in the emulsion target were analysed by new automated scanning systems, allowing the use of a new method for event reconstruction in emulsion. CHORUS has applied these new techniques to the sample of 1996-1997 events for which no muons were observed in the electronic detectors. Combining the new sample with the data analysed in previous papers, the overall sensitivity of the experiment to the ?? appearance is thus improved. In a two-neutrino mixing scheme, a 90% C.L. upper limit of sin2 2 ?µ ? < 4.4 × 10-4 is set for large ? m2, improving by a factor 1.5 the previously published CHORUS result. © 2007 Elsevier B.V. All rights reserved. Bundesministerium für Bildung und Forschung: 05 7MS12P, 05 6BU11P Grant Foundation: KRF-2003-005-C00014 Promotion and Mutual Aid Corporation for Private Schools of Japan CERN Israel Science Foundation: 328/94 Brussels Instituut voor Milieubeheer Istituto Nazionale di Fisica Nucleare Foundation for Fundamental Research on Matter Korean Foundation for Cancer Research Walter Burke Institute for Theoretical Physics 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 (contract numbers 05 6BU11P and 05 7MS12P) (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-2003-005-C00014) (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
2008
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2. Measurements of D0 production and of decay branching fractions in neutrino–nucleon scattering

Author

Motoaki Miyanishi, Yoshihiro Sato, Nicola D'Ambrosio, V. Khovansky, M. T. Muciaccia, T. Kawamura, Alfredo G. Cocco, G. Rosa, A. Kayis-Topaksu, F. Di Capua, F. R. Spada, I. Tezuka, Ghislain Grégoire, Salvatore Buontempo, K. Hoshino, Toshiyuki Nakano, Th. Delbar, E. Barbuto, Denis Favart, G. De Lellis, P. Migliozzi, M. Messina, P. F. Loverre, G. Romano, Pierre Vilain, S. Sorrentino, L. Ludovici, E. Di Capua, L. Scotto Lavina, R. Santacesaria, M. Nakamura, P. Gorbunov, G. Fiorillo, Chiara Sirignano, A. Artamonov, M. de Jong, Gaston Wilquet, H. Shibuya, C. S. Yoon, P. Tolun, I. Makhlioueva, H. Meinhard, M. Sorrentino, Ilya Tsukerman, Murat Guler, R. van Dantzig, Alexandre Rozanov, S. Kalinin, Kimio Niwa, G. Grella, Masahiro Komatsu, Shigeki Aoki, Utku Kose, A. Satta, B. Van de Vyver, U. Dore, T. Toshito, N. Ushida, K. Winter, K. Narita, Piero Zucchelli, D. Frekers, K. Kodama, J. W. E. Uiterwijk, Rudolf Oldeman, J. Goldberg, Osamu Sato, Cristiano Bozza, N. Nonaka, V. Shamanov, D. Kolev, Biagio Saitta, Jiro Kawada, V. Tioukov, G. De Rosa, Gulsen Onengut, A. Marotta, Michiyuki Chikawa, K. Niu, T. Okusawa, P. Strolin, S. Ogawa, R. Tsenov, T. Hara, J. S. Song, N. Bruski, M. G. Catanesi, J. Panman, and Ivana Hristova

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Scattering, Branching fraction, Nuclear emulsion, Neutrino, Nucleon, Charged current, Charged particle
Abstract

During the years 1994–1997, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy. In total about 100 000 charged-current neutrino interactions were located in the nuclear emulsion target and fully reconstructed. From this sample of events which was based on the data acquired by new automatic scanning systems, 1048 charged-current interactions with a D 0 in the final state were selected by a pattern recognition program and confirmed as neutral-particle decays through visual inspection. The ratio of decay branching fractions of the D 0 into four charged particles to two charged particles was measured to be B ( D 0 → V 4 ) / B ( D 0 → V 2 ) = 0.207 ± 0.016 ± 0.004 . The inclusive measurement of the observed production rate of the D 0 with a decay into four charged prongs in combination with external measurements of this topological branching ratio was used to determine the total D 0 production rate by neutrinos without additional assumption on the branching fractions. The value of this rate relative to the charged-current cross-section was found to be σ ( D 0 ) / σ ( CC ) = 0.0269 ± 0.0018 ± 0.0013 . In addition, the same normalization method was used to deduce the inclusive topological decay rate into final states with neutral particles only. A value of 0.218 ± 0.049 ± 0.036 was found for this branching fraction. From an observed number of three charged six-prong events the branching ratio into six charged particles was determined to be ( 1.2 −0.9 +1.3 ± 0.2 ) × 10 −3 . A measurement of the energy dependence of the D 0 production by neutrinos relative to the total charged-current cross-section is also reported. This measurement was used to deduce for m c , the effective charm-quark mass, a value of ( 1.42 ± 0.08 ) GeV / c 2 .

Published
2005
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3. Measurement of D*+ production in charged-current neutrino interactions

Author

I. Tezuka, Osamu Sato, Mitsuhiro Nakamura, Yoshihiro Sato, H. Meinhard, N. Nonaka, S. Buontempo, Gulsen Onengut, F. Di Capua, Koichi Kodama, Piero Zucchelli, V. Shamanov, G. Grella, K. Niu, T. Okusawa, P. Strolin, D. Kolev, Cristiano Bozza, S. Sorrentino, Biagio Saitta, G. De Rosa, Ilya Tsukerman, J. W. E. Uiterwijk, L. Scotto Lavina, S. Ogawa, Pierre Vilain, H. Shibuya, Nicola D'Ambrosio, Jiro Kawada, V. Tioukov, C. S. Yoon, Alexandre Rozanov, G. Grégoire, A. Kayis-Topaksu, P. F. Loverre, A. Satta, M. T. Muciaccia, B. Van de Vyver, M. Messina, L. Ludovici, K. Winter, T. Kawamura, Alfredo G. Cocco, A. Marotta, P. Gorbunov, J. Panman, Rudolf Oldeman, G. Romano, G. Fiorillo, N. Ushida, A. Artamonov, G. Rosa, J. S. Song, Gaston Wilquet, P. Tolun, K. Hoshino, M. de Jong, Masahiro Komatsu, T. Toshito, J. Goldberg, F. R. Spada, U. Kose, Murat Guler, I. Makhlioueva, Toshiyuki Nakano, R. van Dantzig, K. Narita, E. Barbuto, G. De Lellis, E. Di Capua, Chiara Sirignano, V. Khovansky, Shigeki Aoki, K. Niwa, N. Bruski, Th. Delbar, R. Tsenov, M. G. Catanesi, Ivana Hristova, Michiyuki Chikawa, P. Migliozzi, T. Hara, Motoaki Miyanishi, S. Kalinin, U. Dore, D. Frekers, Denis Favart, and R. Santacesaria

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Hadron, Neutrino beam, Nuclear physics, High Energy Physics::Experiment, Nuclear emulsion, Production (computer science), Neutrino, Nuclear Experiment, Neutrino oscillation, Charged current
Abstract

During the years 1994–1997, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy. In total about 100 000 charged-current neutrino interactions were located in the nuclear emulsion target and fully reconstructed. A high-statistics sample of neutrino interactions with a D 0 in the final state was collected. Using the decay mode D * + → D 0 π + a production cross-section measurement of the D * + in neutrino–nucleon charged-current interactions was performed. The low Q-value of the decay was used to isolate a sample of candidate events containing a positive hadron with a small p T with respect to the D 0 direction. A signal of 22.1 ± 5.5 D * + events was obtained. The D * + production cross-section relative to the D 0 production cross-section, σ ( D * + ) / σ ( D 0 ) , was estimated to be 0.38 ± 0.09 ( stat ) ± 0.05 ( syst ) . From this result, the fraction of D 0 's produced via the decay of a D * was deduced to be 0.63 ± 0.17 . The D * + production cross-section relative to the ν μ charged-current interaction, σ ( D * + ) / σ ( CC ) , was estimated to be [ 1.02 ± 0.25 ( stat ) ± 0.15 ( syst ) ] % .

Published
2005
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4. Leading order analysis of neutrino induced dimuon events in the CHORUS experiment

Author

M. Serin-Zeyrek, S. Kalinin, U. Dore, B. Saitta, Shigeki Aoki, Motoaki Miyanishi, K. Hoshino, I. Tezuka, S. Sorrentino, S. Kama, D. Frekers, I. Makhlioueva, Masahiro Komatsu, Toshiyuki Nakano, Ghislain Grégoire, D. Kolev, J. S. Song, E. Barbuto, H. Meinhard, T. Okusawa, T. Toshito, D. Rondeshagen, S. Ogawa, P. F. Loverre, R. Santorelli, P. Migliozzi, G. Rosa, Gaston Wilquet, P. Tolun, G. Romano, P. Zucchelli, Ilya Tsukerman, L. Scotto Lavina, A. Rozanov, N. Bruski, A. Satta, A. G. Cocco, C. S. Yoon, J. Panman, T. Hara, A. Kayis-Topaksu, Pierre Vilain, Osamu Sato, M. Litmaath, T. Kawamura, E. Di Capua, A. Artamonov, Rudolf Oldeman, N. Nonaka, Denis Favart, L. Ludovici, V. Shamanov, C. Sirignano, Koichi Kodama, Michiyuki Chikawa, K. Winter, P. Strolin, A. Bülte, V. Tioukov, Cristiano Bozza, J. W. E. Uiterwijk, R. Tsenov, Nicola D'Ambrosio, A. Marotta, J. Goldberg, Ivana Hristova, M. Messina, G. De Rosa, K. Narita, R. van Dantzig, S. Buontempo, G. De Lellis, Y. Sato, G. Fiorillo, F. R. Spada, U. Kose, R. Santacesaria, V. Khovansky, F. Di Capua, J. Kawada, Murat Guler, G. Grella, Gulsen Onengut, K. Niwa, B. Van de Vyver, N. Ushida, Th. Delbar, H. Shibuya, M. T. Muciaccia, T. Wolff, Mitsuhiro Nakamura, P. Gorbunov, M. de Jong, K. Niu, M. G. Catanesi, UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, M. d., Jong, R. G., C., A., Guler, S., Kama, U., Kose, M., Serin Zeyrek, P., Tolun, M. G., Catanesi, M. T., Muciaccia, A., Bulte, K., Winter, B. V., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, I. R., Hristova, T., Kawamura, D., Kolev, M., Litmaath, H., Meinhard, J., Panman, A., Rozanov, R., Tsenov, J. W., E., P., Zucchelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Makhlioueva, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, J., Kawada, M., Komatsu, A., Miyanishi, M., Nakamura, 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, DI CAPUA, Francesco, Fiorillo, Giuliana, A., Marotta, M., Messina, P., Migliozzi, R., Santorelli, L. S., Lavina, Strolin, PAOLO EMILIO, V., Tioukov, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, 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
Quark, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, FOS: Physical sciences, Charm quark, High Energy Physics - Experiment, PHYSICS, Nuclear physics, charm production, High Energy Physics - Experiment (hep-ex), neutrino, CHARGED-CURRENT INTERACTIONS, LEPTOPRODUCTION, OPPOSITE-SIGN DIMUONS, Neutrino, SCATTERING, QCD ANALYSIS, NUCLEON, Neutrino oscillation, Nuclear Experiment, OSCILLATION, Physics, Muon, dimuon, High Energy Physics::Phenomenology, Dimuon, Baryon, Charm production, PARTON DISTRIBUTIONS, Physique des particules élémentaires, High Energy Physics::Experiment, HEAVY QUARKS, Nucleon, Particle Physics - Experiment, Lepton
Abstract

We present a leading order QCD analysis of a sample of neutrino induced charged-current events with two muons in the final state originating in the lead-scintillating fibre calorimeter of the CHORUS detector. The results are based on a sample of 8910 neutrino and 430 antineutrino induced opposite-sign dimuon events collected during the exposure of the detector to the CERN Wide Band Neutrino Beam between 1995 and 1998. The analysis yields a value of the charm quark mass of mc = (1.26 ± 0.16 ± 0.09) GeV / c2 and a value of the ratio of the strange to non-strange sea in the nucleon of κ = 0.33 ± 0.05 ± 0.05, improving the results obtained in similar analyses by previous experiments. © 2008 Elsevier B.V. All rights reserved., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2008

5. Final results on nu(mu) ---> nu(tau) oscillation from the CHORUS experiment

Author

E. Eskut, A. Kayis Topaksu, A. Satta, F. R. Spada, E. Barbuto, C. Bozza, G. Grella, G. Romano, C. Sirignano, S. Sorrentino, Y. Sato, I. Tezuka, PALLADINO, VITTORIO, STROLIN, PAOLO EMILIO, DE LELLIS, GIOVANNI, DE ROSA, GIANFRANCA, FIORILLO, GIULIANA, E., Eskut, A., Kayis Topaksu, Palladino, Vittorio, Strolin, PAOLO EMILIO, DE LELLIS, Giovanni, DE ROSA, Gianfranca, Fiorillo, Giuliana, A., Satta, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, and I., Tezuka

Abstract

The final oscillation analysis of the complete set of data collected by CHORUS in the years 1994–1997 is presented. Reconstruction algorithms of data extracted by electronic detectors were improved and the data recorded in the emulsion target were analysed by new automated scanning systems, allowing the use of a new method for event reconstruction in emulsion. CHORUS has applied these new techniques to the sample of 1996–1997 events for which no muons were observed in the electronic detectors. Combining the new sample with the data analysed in previous papers, the overall sensitivity of the experiment to the ντ appearance is thus improved. In a two-neutrino mixing scheme, a 90% C.L. upper limit of sin22θμτ

Published
2008

6. Charged-particle multiplicities in charged-current neutrino and anti-neutrino-nucleus interactions

Author

S. Kalinin, E. Di Capua, U. Dore, E. Barbuto, Toshiyuki Nakano, A. Rozanov, K. Winter, G. De Lellis, A. Kayis-Topaksu, Ghislain Grégoire, Cristiano Bozza, Shigeki Aoki, K. Niu, I. Tezuka, M. T. Muciaccia, A. Satta, S. Sorrentino, C. S. Yoon, N. Nonaka, D. Frekers, V. Shamanov, C. Sirignano, G. De Rosa, G. Romano, Nicola D'Ambrosio, J. Panman, P. Strolin, S. Ogawa, Osamu Sato, Y. Sato, G. Fiorillo, Pierre Vilain, H. Meinhard, Mitsuhiro Nakamura, J. Kawada, Masahiro Komatsu, T. Okusawa, T. Toshito, Gulsen Onengut, F. R. Spada, U. Kose, Rudolf Oldeman, A. G. Cocco, Denis Favart, T. Hara, D. Kolev, Michiyuki Chikawa, H. Shibuya, N. Ushida, G. Grella, L. Ludovici, L. Scotto Lavina, K. Narita, Ivana Hristova, P. Gorbunov, Koichi Kodama, R. Santacesaria, G. Rosa, M. de Jong, P. Migliozzi, Gaston Wilquet, P. Tolun, J. W. E. Uiterwijk, Murat Guler, N. Bruski, P. Zucchelli, T. Kawamura, Ilya Tsukerman, K. Niwa, Th. Delbar, B. Van de Vyver, A. Artamonov, R. Tsenov, J. Goldberg, B. Saitta, R. van Dantzig, S. Buontempo, F. Di Capua, I. Makhlioueva, V. Khovansky, P. F. Loverre, J. S. Song, M. G. Catanesi, Motoaki Miyanishi, K. Hoshino, V. Tioukov, A. Marotta, Çukurova Üniversitesi, 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, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, M. d., Jong, R. G., C., M., Guler, U., Kose, P., Tolun, M. G., Catanesi, M. T., Muciaccia, K., Winter, B. v., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, I. R., Hristovalo, T., Kawamura, D., Kolev, H., Meinhard, J., Panman, A., Rozanov, R., Tsenov, J. W., E., P., Zucchelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Makhlioueva, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, T., Nakano, K., Narita, K., Niu, K., Niwa, N., Nonaka, O., Sato, T., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosi, DE LELLIS, Giovanni, DE ROSA, Gianfranca, F. D., Capua, Fiorillo, Giuliana, A., Marotta, P., Migliozzi, L. S., Lavina, P., Strolin, V., Tioukov, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, 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
HIGH-ENERGY, COLLISIONS, Particle physics, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, Monte Carlo method, FOS: Physical sciences, PROTON INTERACTIONS, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), neutrino interactions, multiplicity, SEARCH, Ionization, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], DISTRIBUTIONS, Nuclear emulsion, 010306 general physics, Engineering (miscellaneous), Scaling, Charged current, Physics, CHORUS EXPERIMENT, 010308 nuclear & particles physics, NU-P, HADRONS, Multiplicity (mathematics), Charged particle, 3. Good health, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment, EMULSION, SYSTEM
Abstract

The CHORUS experiment, designed to search for $\nu_{\mu}\to\nu_{\tau}$ oscillations, consists of a nuclear emulsion target and electronic detectors. In this paper, results on the production of charged particles in a small sample of charged-current neutrino-- and anti-neutrino--nucleus interactions at high energy are presented. For each event, the emission angle and the ionization features of the charged particles produced in the interaction are recorded, while the standard kinematic variables are reconstructed using the electronic detectors. The average multiplicities for charged tracks, the pseudo-rapidity distributions, the dispersion in the multiplicity of charged particles and the KNO scaling are studied in different kinematical regions. A study of quasi-elastic topologies performed for the first time in nuclear emulsions is also reported. The results are presented in a form suitable for use in the validation of Monte Carlo generators of neutrino--nucleus interactions., Comment: 17 pages, 5 figures

Published
2007
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7. Associated charm production in neutrino-nucleus interactions

Author

A. G. Cocco, N. Nonaka, H. Meinhard, Denis Favart, V. Shamanov, C. Sirignano, P. Strolin, L. Ludovici, A. Kayis-Topaksu, M. T. Muciaccia, B. Van de Vyver, Motoaki Miyanishi, K. Hoshino, S. Sorrentino, Y. Sato, S. Ogawa, J. Panman, J. Kawada, Ghislain Grégoire, S. Buontempo, P. Zucchelli, Ilya Tsukerman, F. Di Capua, T. Hara, P. Gorbunov, D. Kolev, Osamu Sato, A. Rozanov, G. Romano, M. de Jong, Gulsen Onengut, N. Ushida, Mitsuhiro Nakamura, E. Di Capua, M. G. Catanesi, A. Artamonov, K. Niu, Koichi Kodama, Emiliano Barbuto, V. Tioukov, Murat Guler, G. Rosa, R. Tsenov, Gaston Wilquet, J. Goldberg, A. Marotta, P. Tolun, Nicola D'Ambrosio, K. Narita, R. van Dantzig, P. Migliozzi, A. Satta, C. S. Yoon, Cristiano Bozza, Michiyuki Chikawa, J. W. E. Uiterwijk, J. S. Song, F. R. Spada, B. Saitta, U. Kose, I. Makhlioueva, G. Fiorillo, Ivana Hristova, R. Santacesaria, G. De Rosa, S. Kalinin, U. Dore, I. Tezuka, N. Bruski, D. Frekers, T. Kawamura, K. Winter, H. Shibuya, G. Grella, Toshiyuki Nakano, G. De Lellis, K. Niwa, Th. Delbar, Masahiro Komatsu, T. Okusawa, T. Toshito, L. Scotto Lavina, Rudolf Oldeman, Shigeki Aoki, P. F. Loverre, V. Khovansky, Pierre Vilain, Çukurova Üniversitesi, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, M. d., Jong, R. G., C., M., Guler, U., Kose, P., Tolun, M. G., Catanesi, M. T., Muciaccia, K., Winter, B. v., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, I. R., Hristova, T., Kawamura, D., Kolev, H., Meinhard, J., Panman, A., Rozanov, R., Tsenov, J. W., E., P., Zucchelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Makhlioueva, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, 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, Fiorillo, Giuliana, A., Marotta, P., Migliozzi, L. S., Lavina, P., Strolin, V., Tioukov, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, 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, Kayis Topaksu, A., Önengüt, G., van Dantzig, R., de Jong, M., Oldeman, R. G. C., Güler, M., Köse, U., Tolun, P., Catanesi, M. G., Muciaccia, M. T., Winter, K., Van de Vyver, B., Vilain, P., Wilquet, G., Saitta, B., Di Capua, E., Ogawa, S., Shibuya, H., Hristova, I. R., Kawamura, T., Kolev, D., Meinhard, H., Panman, J., Rozanov, A., Tsenov, R., Uiterwijk, J. W. E., Zucchelli, P., Goldberg, J., Chikawa, M., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Delbar, T., Favart, D., Grégoire, G., Kalinin, S., Makhlioueva, I., Artamonov, A., 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, Marotta, A., Migliozzi, P., Scotto Lavina, L., Strolin, P., Tioukov, V., Okusawa, T., Dore, U., Loverre, P. F., Ludovici, L., Rosa, G., Santacesaria, R., Satta, A., Spada, F. R., Barbuto, E., Bozza, C., Grella, G., Romano, G., Sirignano, C., Sorrentino, S., Sato, Y., and Tezuka, I.

Subjects
Quark, Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, EVENTS, High Energy Physics - Experiment (hep-ex), SEARCH, SCATTERING, PARTICLES, Nuclear emulsion, TRIMUON PRODUCTION, Charm (quantum number), TEVATRON, Engineering (miscellaneous), OSCILLATION, Physics, Muon, Neutral current, ELECTROWEAK PARAMETERS, CHORUS, Pair production, Neutrino, Particle Physics - Experiment, Lepton
Abstract

In this paper a search for associated charm production both in neutral and charged current $\nu$-nucleus interactions is presented. The improvement of automatic scanning systems in the {CHORUS} experiment allows an efficient search to be performed in emulsion for short-lived particles. Hence a search for rare processes, like the associated charm production, becomes possible through the observation of the double charm-decay topology with a very low background. About 130,000 $\nu$ interactions located in the emulsion target have been analysed. Three events with two charm decays have been observed in the neutral-current sample with an estimated background of 0.18$\pm$0.05. The relative rate of the associated charm cross-section in deep inelastic $\nu$ interactions, $\sigma(c\bar{c}\nu)/\sigma_\mathrm{NC}^\mathrm{DIS}= (3.62^{+2.95}_{-2.42}({stat})\pm 0.54({syst}))\times 10^{-3}$ has been measured. One event with two charm decays has been observed in charged-current $\nu_\mu$ interactions with an estimated background of 0.18$\pm$0.06 and the upper limit on associated charm production in charged-current interactions at 90% C.L. has been found to be $\sigma (c\bar{c} \mu^-)/\sigma_\mathrm{CC} < 9.69 \times 10^{-4}$., Comment: 10 pages, 4 figures

Published
2007

8. Measurement of nucleon structure functions in neutrino scattering

Author

M. Messina, Koichi Kodama, J. W. E. Uiterwijk, G. Fiorillo, E. Barbuto, Motoaki Miyanishi, D. Kolev, F. Di Capua, S. Kalinin, R. Santacesaria, Cristiano Bozza, U. Dore, E. Di Capua, H. Shibuya, K. Niwa, Yoshihiro Sato, M. T. Muciaccia, Th. Delbar, Salvatore Buontempo, T. Wolff, J. Goldberg, Osamu Sato, L. Ludovici, K. Winter, Alexandre Rozanov, G. Rosa, D. Rondeshagen, P. Migliozzi, B. Van de Vyver, D. Frekers, Toshiyuki Nakano, G. De Lellis, C. S. Yoon, Masahiro Komatsu, T. Hara, M. Nakamura, P. Gorbunov, G. Grella, Rudolf Oldeman, P. F. Loverre, A. G. Cocco, Denis Favart, Piero Zucchelli, T. Toshito, Nicola D'Ambrosio, N. Nonaka, M. de Jong, Murat Guler, V. Shamanov, C. Sirignano, V. Khovansky, A. Artamonov, A. Bülte, I. Makhlioueva, J. S. Song, R. Tsenov, I. Tezuka, R. van Dantzig, A. Satta, Pierre Vilain, N. Ushida, L. Scotto Lavina, H. Meinhard, Biagio Saitta, V. Tioukov, Gaston Wilquet, R. Santorelli, F. R. Spada, U. Kose, A. Marotta, P. Tolun, M. Serin-Zeyrek, Shigeki Aoki, K. Narita, S. Sorrentino, S. Kama, S. Ogawa, J. Kawada, Gulsen Onengut, K. Niu, T. Okusawa, P. Strolin, G. De Rosa, Michiyuki Chikawa, Ivana Hristova, A. Kayis-Topaksu, Ghislain Grégoire, K. Hoshino, N. Bruski, G. Romano, M. Litmaath, T. Kawamura, M. G. Catanesi, Ilya Tsukerman, J. Panman, Önengüt, G., van Dantzig, R., de Jong, M., Oldeman, R. G. C., Güler, M., Kama, S., Köse, U., Serin Zeyrek, M., Tolun, P., Catanesi, M. G., Muciaccia, M. T., Bülte, A., Winter, K., Van de Vyver, B., Vilain, P., Wilquet, G., Saitta, B., Di Capua, E., Ogawa, S., Shibuya, H., Hristova, I. R., Kayis Topaksu, A., Kawamura, T., Kolev, D., Litmaath, M., Meinhard, H., Panman, J., Rozanov, A., Tsenov, R., Uiterwijk, J. W. E., Zucchelli, P., Goldberg, J., Chikawa, M., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Delbar, T., Favart, D., Grégoire, G., Kalinin, S., Makhlioueva, I., Artamonov, A., 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, Fiorillo, Giuliana, Marotta, A., Messina, M., Migliozzi, P., Santorelli, R., Scotto Lavina, L., Strolin, P., Tioukov, V., Okusawa, T., Dore, U., Loverre, P. F., Ludovici, L., 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., UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, G., Onengut, R. v., Dantzig, M. d., Jong, R. G., C., M., Guler, S., Kama, U., Kose, M., Serin Zeyrek, P., Tolun, M. G., Catanesi, M. T., Muciaccia, A., Bulte, K., Winter, B. V., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, I. R., Hristova, A., Kayis Topaksu, T., Kawamura, D., Kolev, M., Litmaath, H., Meinhard, J., Panman, A., Rozanov, R., Tsenov, J. W., E., P., Zuechelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Makhlioueva, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, D., Rondeshagen, T., Wolff, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, 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., Marotta, M., Messina, P., Mighozzi, R., Santorelli, L. S., Lavina, Strolin, PAOLO EMILIO, V., Tioukov, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, 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
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Nuclear Theory, CROSS-SECTIONS, Nuclear physics, Pion, Alte energie, fisica del neutrino, DEPENDENCE, SEARCH, Nuclear Experiment, Charged current, OSCILLATION, Physics, CHORUS EXPERIMENT, Large Hadron Collider, Muon, Oscillation, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Neutrino, Nucleon, Particle Physics - Experiment, SYSTEM, Beam (structure)
Abstract

After completion of the data taking for the ?µ›?? oscillation search, the CHORUS lead-scintillator calorimeter was used in the 1998 run as an active target. High-statistics samples of charged-current interactions were collected in the CERN SPS west area neutrino beam. This beam contained predominantly muon (anti-)neutrinos from sign-selected pions and kaons. We measure the flux and energy spectrum of the incident neutrinos and compare them with beam simulations. The neutrino-nucleon and anti-neutrino-nucleon differential cross-sections are measured in the range 0.01

Published
2006

9. Measurements of D-0 production and of decay branching fractions in neutrino-nucleon scattering

Author

T. Toshito, S. Buontempo, A. G. Cocco, N. D'Ambrosio, DE LELLIS, GIOVANNI, DE ROSA, GIANFRANCA, F. D. Capua, FIORILLO, GIULIANA, A. Marotta, M. Messina, P. Migliozzi, L. S. Lavina, M. Sorrentino, P. Strolin, V. Tioukov, T. Okusawa, U. Dore, R. Loverre, L. Ludovici, 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, T., Toshito, S., Buontempo, A. G., Cocco, N., D'Ambrosio, DE LELLIS, Giovanni, DE ROSA, Gianfranca, F. D., Capua, Fiorillo, Giuliana, A., Marotta, M., Messina, P., Migliozzi, L. S., Lavina, M., Sorrentino, P., Strolin, V., Tioukov, T., Okusawa, U., Dore, R., Loverre, L., Ludovici, 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
CHARGED-CURRENT INTERACTIONS, LEPTOPRODUCTION, OPPOSITE-SIGN DIMUONS, NOMAD EXPERIMENT, LAMBDA-C+, PARTICLE-PRODUCTION, HEAVY QUARKS, CHARMED-BARYON PRODUCTION, NU(MU), EMULSION
Abstract

During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy. In total about 100 000 charged-current neutrino interactions were located in the nuclear emulsion target and fully reconstructed. From this sample of events which was based on the data acquired by new automatic scanning systems, 1048 charged-current interactions with a Do in the final state were selected by a pattern recognition program and confirmed as neutral-particle decays through visual inspection. The ratio of decay branching fractions of the Do into four charged particles to two charged particles was measured to be B(D-0 &RARR; V4)/B(D-0 &RARR; V2) = 0.207 &PLUSMN; 0.016 &PLUSMN; 0.004. The inclusive measurement of the observed production rate of the Do with a decay into four charged prongs in combination with external measurements of this topological branching ratio was used to determine the total Do production rate by neutrinos without additional assumption on the branching fractions. The value of this rate relative to the charged-current cross-section was found to be σ (D-0) / σ (CC) = 0.0269 &PLUSMN; 0.0018 &PLUSMN; 0.0013. In addition, the same normalization method was used to deduce the inclusive topological decay rate into final states with neutral particles only. A value of 0.218 &PLUSMN; 0.049 &PLUSMN; 0.036 was found for this branching fraction. From an observed number of three charged six-prong events the branching ratio into six charged particles was determined to be (1.2(-0.9)(+1.3) &PLUSMN; 0.2) x 10(-3). A measurement of the energy dependence of the D-0 production by neutrinos relative to the total charged-current cross-section is also reported. This measurement was used to deduce for m(c), the effective charm-quark mass, a value of (1.42 &PLUSMN; 0.08) GeV/c(2). © 2005 Elsevier B.V. All rights reserved.

Published
2005

10. 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

11. Measurement of Lambda(+)(c) production in neutrino charged-current interactions

Author

E. Barbuto, S. Simone, A. Satta, B. Van de Vyver, E. Radicioni, Jiro Kawada, P. Zucchelli, Ilya Tsukerman, S. Kalinin, U. Dore, Nicola D'Ambrosio, J. Panman, C. S. Yoon, V. Tioukov, Mitsuhiro Nakamura, K. Nakamura, Osamu Sato, P. F. Loverre, Ghislain Grégoire, S. Sorrentino, K. Niu, A. Marotta, T. Kawamura, A. Kayis-Topaksu, M. Miyanishi, I. Tezuka, J. S. Song, F. R. Spada, G. Romano, D. Frekers, A. Artamonov, S. Ogawa, M. De Serio, A. Bülte, Jan Visschers, K. Niwa, B. Saitta, Th. Delbar, T. Hara, R. Tsenov, D. Kolev, M. Messina, Cristiano Bozza, N. Bruski, V. Khovansky, C. Pistillo, Utku Kose, M. G. Catanesi, J. Goldberg, I. Papadopoulos, M. T. Muciaccia, G. Fiorillo, N. Nonaka, K. Narita, R. van Dantzig, S. Buontempo, A. G. Cocco, Michiyuki Chikawa, F. Di Capua, Antonio Ereditato, E. Di Capua, Denis Favart, V. Shamanov, Murat Guler, H. Shibuya, Chiara Sirignano, G. De Rosa, K. Hoshino, R. El-Aidi, Ramazan Sever, S. Ricciardi, Mathieu Doucet, M. Ieva, K. Winter, Koichi Kodama, G. Grella, P. Gorbunov, Toshiyuki Nakano, I Maklioueva, Ivana Hristova, R. Santacesaria, L. Scotto Lavina, G. De Lellis, M. de Jong, E. Arik, J. W. E. Uiterwijk, L. Ludovici, G. Rosa, Masahiro Komatsu, Gaston Wilquet, P. Tolun, T. Okusawa, T. Toshito, Y. Sato, A. Rozanov, Gulsen Onengut, N. Ushida, H. Meinhard, P. Migliozzi, Mehmet Zeyrek, Mihail Chizhov, O. Melzer, P. Strolin, E. Pesen, M. Serin-Zeyrek, Shigeki Aoki, Rudolf Oldeman, Pierre Vilain, P. Righini, N. Armenise, Çukurova Üniversitesi, A., Kayis Topaksu, G., Onengut, R. v., Dantzig, A. d., Jong, O., Melzer, R. G., C., E., Pesen, F. R., Spada, J. L., Visscher, M., Guler, U., Kose, A., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, N., Armenise, M. G., Catanesi, M. D., Serio, M., Leva, M. T., Muciaccia, A., Bulte, K., Winter, R., El Aidi, B. V., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, A., Artamonov, M., Chizhov, M., Doucet, I. R., Hristova, T., Kawamura, D., Kolev, H., Meinhard, J., Panman, I. M., Papadopoulo, S., Ricciardi, A., Rozanov, R., Tsenov, J. W., E., P., Zucchelli, J., Goldberg, M., Chikawa, E., Arik, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Maklioueva, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, 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, DI CAPUA, Francesco, A., Ereditato, Fiorillo, Giuliana, A., Marotta, M., Messina, P., Migliozzi, C., Pistillo, L. S., Lavina, Strolin, PAOLO EMILIO, 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, I., Tezuka, 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, 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, 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, Ereditato, A, 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, and Tezuka, I.

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Lambda, Lambda baryon, CROSS-SECTIONS, Nuclear physics, EVENTS, OPPOSITE-SIGN DIMUONS, Production (computer science), High Energy Physics::Experiment, Charm (quantum number), Neutrino, Nucleon, Nuclear Experiment, Charged current
Abstract

A measurement of ?c+ production in neutrino nucleon charged-current interactions is presented. In a subsample of about 50 000 interactions located in the emulsion target of the CHORUS detector, exposed to the wide band neutrino beam of the CERN SPS, candidates for decays of short-lived particles were identified using new automatic scanning systems and later confirmed through visual inspection. Criteria based on the flight length allowed a statistical separation among the different charm species thus enabling a sample particularly rich in A+ to be defined. At an average neutrino energy of 27 GeV, the product ?(?c+)/?(CC) × BR(?c+ › 3p) was measured to be (0.37 ± 0.10(stat) ± 0.02(syst)) × 10-2, while the values of (1.54 ± 0.35(stat) ± 0.18(syst)) × 10-2 and of 0.24 ± 0.07(stat) ± 0.04(syst) were obtained for ?(?c+)/?(CC) and BR(?c+ › 3p), respectively. © 2003 Elsevier Science B.V. All rights reserved. KRF-2001-005-D00006 Israel Science Foundation: 328/94 Japan Society for the Promotion of Science CERN Bundesministerium für Bildung und Forschung 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 Nucl e ´ aires 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 f u ¨ r 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
2003

12. 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

13. 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

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

Author

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

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

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

Published
2001

17. 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

18. 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

19. 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).

20. Measurement of charm production in antineutrino charged-current interactions

Author

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, Klaus, Van de Vyver, B, Vilain, P, Wilquet, G, Saitta, B, Di Capua, E, Ogawa, S, Shibuya, H, Artamonov, A V, Brunner, J, Chizhov, M, Cussans, D G, Doucet, M, Fabre, Jean-Paul, Hristova, I R, Kawamura, T, Kolev, D, Litmaath, M, Meinhard, H, Panman, J, Papadopoulos, I M, Ricciardi, S, Rozanov, A, Saltzberg, D, Tsenov, R V, 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 V, Gorbunov, P, Khovanskii, V D, Shamanov, V 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, F, Ereditato, A, Fiorillo, G, Marotta, A, Messina, M, Migliozzi, P, Pistillo, C, Santorelli, R, Scotto-Lavina, L, Strolin, P, Tioukov, V, Nakamura, K, Okusawa, T, Dore, U, FLoverre, P, Ludovici, L, Maslennikov, A L, 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, Other Research IHEF (IoP, FNWI), UCL - SC/PHYS - Département de physique, Çukurova Üniversitesi, Önengüt, G., van Dantzig, R., de Jong, M., Melzer, O., Oldeman, R. G. C., Pesen, E., 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., Saitta, B., Di Capua, E., Ogawa, S., Shibuya, H., Artamonov, A., Chizhov, M., Doucet, M., Hristova, I. R., Kayis Topaksu, A., 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., Makhlioueva, 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., Spada, F. R., Barbuto, E., Bozza, C., Grella, G., Romano, G., Sirignano, C., Sorrentino, S., Sato, Y., Tezuka, I., G., Onengut, R. v., Dantzig, M. d., Jong, O., Melzer, R. G., C., E., Pesen, J. L., Visscher, M., Guler, U., Kose, M., Serin Zeyrek, R., Sever, P., Tolun, M. T., Zeyrek, M. G., Catanesi, M. D., Serio, M., Ieva, M. T., Muciaccia, E., Radicioni, S., Simone, A., Bulte, K., Winter, B. V., De, P., Vilain, G., Wilquet, B., Saitta, E. D., Capua, S., Ogawa, H., Shibuya, A., Artamonov, M., Chizhov, M., Doucet, I. R., Hristova, A., Kayis Topaksu, T., Kawamura, D., Kolev, H., Meinhard, J., Panman, I. M., Papadopoulo, S., Ricciardi, A., Rozanov, R., Tsenov, J. W., E., P., Zucchelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Gregoire, S., Kalinin, I., Makhlioueva, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, 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, 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, F. R., Spada, E., Barbuto, C., Bozza, G., Grella, G., Romano, C., Sirignano, S., Sorrentino, Y., Sato, and I., Tezuka

Subjects
Physics, NEUTRINO INTERACTIONS, CHORUS EXPERIMENT, Nuclear and High Energy Physics, Particle physics, Muon, Large Hadron Collider, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Charge (physics), BEAMS, EVENTS, Nuclear physics, OPPOSITE-SIGN DIMUONS, High Energy Physics::Experiment, Production (computer science), Charm (quantum number), Neutrino, Nuclear Experiment, Particle Physics - Experiment, Charged current, Beam (structure)
Abstract

During the years 1994-1997, the emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS collecting about 10 6 neutrino interactions. A measurement of ?¯µ-induced charm production is performed by using the presence of a 5% ?¯µ component in the ?µ beam. The measurement takes advantage of the capability to observe the decay topology in the emulsion. The analysis is based on a sample of charged-current interactions with at least one identified muon. About 100000 were located in the emulsion target and fully reconstructed. By requiring a positive muon charge as determined by the CHORUS muon spectrometer, 32?¯µ-induced charm events were observed with an estimated background of 3.2 events. At an average antineutrino energy in the neutrino beam of 18 GeV, the charm production rate induced by antineutrinos is measured to be ?(?¯µN›µ+c¯X)/?(?¯µN›µ+X) =(5.0-0.9+1.4(stat)±0.7(syst))%. The ratio between neutral and charged charm production rates in this process is (2.6-1.0+1.7(stat)±0.8(syst)). The charm production rate as a function of the antineutrino energy is found to be in good agreement with previous results derived from di-lepton data. © 2004 Elsevier B.V. All rights reserved. Bundesministerium für Bildung und Forschung Promotion and Mutual Aid Corporation for Private Schools of Japan Grant Foundation: KRF-2003-005-C00014 Israel Science Foundation: 328/94 CERN Brussels Instituut voor Milieubeheer 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 was 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); Korea Research Foundation Grant (KRF-2003-005-C00014) (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
2004
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21. Measurement of charm production in neutrino charged-current interactions

Author

Kayis Topaksu, A., Onengut, G., Dantzig, R. V., Jong, M. D., Van Dantzig, R., De Jong, M., Oldeman, P. G. C., Oldeman, R. G. C., Guler, M., Kose, U., Tolun, P., Catanesi, M. G., Muciaccia, M. T., Winter, K., B. V., De, Van De Vyver, B., Vilain, P., Wilquet, G., Saitta, B., Capua, E. D., Di Capua, E., Ogawa, S., Shibuya, H., Hristova, I. R., Kawamura, T., Kolev, D., Meinhard, H., Panman, J., Rozanov, A., Tsenov, R., Uiterwijk, J. W. E., Zucchelli, P., Goldbergll, Goldberg, J., Chikawa, M., Song, J. S., Yoon, C. S., Kodama, K., Ushida, N., Aoki, S., Hara, T., Delbar, T., Favart, D., Gregoire, G., Kalinin, S., Makhlioueva, I., Artamonov, A., 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., Lellis, G. D., De Lellis, G., De Rosa, G., Di Capua, F., Fiorillo, G., Marotta, A., Messina, M., Migliozzi, P., Lavina, L. S., Scotto Lavina, L., Strolin, P., Tioukov, V., Okusawa, T., Dore, U., Loverre, Pier Ferruccio, Ludovici, L., Rosa, Giovanni, Capua, F. D., Dore, Ubaldo, Loverre, P. F., 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., Çukurova Üniversitesi, A., Kayis Topaksu, G., Önengüt, R., van Dantzig, M., de Jong, R. G. C., Oldeman, M., Güler, U., Köse, P., Tolun, M. G., Catanesi, M. T., Muciaccia, K., Winter, B., Van de Vyver, P., Vilain, G., Wilquet, B., Saitta, E., Di Capua, S., Ogawa, H., Shibuya, I. R., Hristova, T., Kawamura, D., Kolev, H., Meinhard, J., Panman, A., Rozanov, R., Tsenov, J. W. E., Uiterwijk, P., Zucchelli, J., Goldberg, M., Chikawa, J. S., Song, C. S., Yoon, K., Kodama, N., Ushida, S., Aoki, T., Hara, T., Delbar, D., Favart, G., Grégoire, S., Kalinin, I., Makhlioueva, A., Artamonov, P., Gorbunov, V., Khovansky, V., Shamanov, I., Tsukerman, N., Bruski, D., Freker, K., Hoshino, J., Kawada, M., Komatsu, M., Miyanishi, M., Nakamura, 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, DI CAPUA, Francesco, Fiorillo, Giuliana, A., Marotta, M., Messina, P., Migliozzi, L., Scotto Lavina, Strolin, PAOLO EMILIO, V., Tioukov, T., Okusawa, U., Dore, P. F., Loverre, L., Ludovici, 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, Particle physics, Muon, Large Hadron Collider, Physics::Instrumentation and Detectors, Hadron, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Hadronization, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Nuclear emulsion, High Energy Physics::Experiment, Charm (quantum number), Neutrino, Nuclear Experiment, Charged current, Particle Physics - Experiment
Abstract

The nuclear emulsion target of the CHORUS detector was exposed to the wide-band neutrino beam of the CERN SPS of 27 GeV average neutrino energy from 1994 to 1997. In total about 100000 charged-current neutrino interactions with at least one identified muon were located in the emulsion target and fully reconstructed, using newly developed automated scanning systems. Charmed particles were searched for by a program recognizing particle decays. The observation of the decay in nuclear emulsion makes it possible to select a sample with very low background and minimal kinematical bias. 2013 charged-current interactions with a charmed hadron candidate in the final state were selected and confirmed through visual inspection. The charm production rate induced by neutrinos relative to the charged-current cross-section is measured to be sigma(nu_mu N -> mu- C X)/sigma(CC) = (5.75 +-0.32 stat +-0.30 syst)%. The charm production cross-section as a function of the neutrino energy is also obtained. The results are in good agreement with previous measurements. The charm-quark hadronization produces the following charmed hadrons with relative fractions (in %): f_Dzero = 43.7+-4.5, f_Lambda_c^plus = 19.2+-4.2, f_Dplus = 25.3+-4.2, and f_D_splus = 11.8+-4.7., 16 pages, 5 figures

Published
2011

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