Cross-section measurement for quasi-elastic production of charmed baryons in $\nu N$ interactions

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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 46000 interactions located in the emulsion, candidates for decays of short-lived particles were identified by using new au...

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Detalles Bibliográficos
Autores principales: 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, Klaus, Van de Vyver, B, Vilain, P, Wilquet, G, Pittoni, G L, Saitta, B, Di Capua, E, Ogawa, S, Shibuya, H, Artamonov, A V, Chizhov, M, Doucet, M, Hristova, I R, Kawamura, T, Kolev, D, Meinhard, H, Panman, J, Papadopoulos, I M, Ricciardi, S, Rozanov, A, 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, 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, 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
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/647115
Descripción
Sumario: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 46000 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 topologival 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 27GeV the cross section for total quasi-elastic production of charmed baryons relative to the nuN charged-current cross-section was measured to be sigma(QE)/sigma(CC)=(0.23^+0.12_-0.06(stat)^+0.02_-0.03(syst))x10^-2. Through an analysis of the topology at the production and decay vertices the relative cross-sections were measured separately for singly (Lambda^+_c, Sigma^+_c, Sigma^+*_c) and doubly (Sigma^++_c, Sigma^++*_c) charged baryons.

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