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

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.

doi:10.1016/S0370-2693(02)02865-4

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\.

Determination of the semi-leptonic branching fraction of charm hadrons produced in neutrino charged-current interactions / 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.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 549:1-2(2002), pp. 48-57. [10.1016/S0370-2693(02)02865-4]