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

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ID: 272900
2002
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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 56172νμ 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|.
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Authors A Kayis-Topaksu, G Onengüt, M De Jong, O Melzer, Rudolf Oldeman, E Pesen, F.R Spada, R Van Dantzig, J.L Visschers, M Güler, M Serin-Zeyrek, R Sever, P Tolun, N Armenise, M.G Catanesi, Marilisa De Serio, Michela Ieva, M.T Muciaccia, E Radicioni, Saverio Simone, A Bülte, K Winter, R El-Aidi, B Van De Vyver, P Vilain, G Wilquet, B Saitta, F. D. Capua, S Ogawa, H Shibuya, A Artamonov, M Chizhov, Mathieu Doucet, I.R Hristova, T Kawamura, D Kolev, H Meinhard, J Panman, I.M Papadopoulos, S Ricciardi, A Rozanov, Roumen Tsenov, J.w.e Uiterwijk, 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 Grégoire, S Kalinin, I Maklioueva, P Gorbunov, V Khovansky, V Shamanov, I Tsukerman, N Bruski, D Frekers, K Hoshino, M Komatsu, M Miyanishi, K. Nakamura, T Nakano, K Narita, K Niu, K Niwa, N Nonaka, O Sato, T Toshito, S. Buontempo, Alfredo Giuseppe Cocco, Nicola D'Ambrosio, Giovanni De Lellis, Gianfranca De Rosa, A. Ereditato, Giuliana Fiorillo, Marcello Messina, Pasquale Migliozzi, Ciro Pistillo, L Scotto Lavina, P. Strolin, Valeri Tioukov, T. Okusawa, U. Dore, P. F. Loverre, Lucio Ludovici, P. Righini, R. Santacesaria, A. Satta, E. Barbuto, C Bozza, Giuseppe Grella, G. Romano, C. Sirignano
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Journal physics letters b
Year 2002
DOI
10.1016/s0370-2693(02)02865-4
URL
https://sciprofiles.com/publication/view/391c4038dfa1d81523be1c7abc88c22a
Keywords
physics events search chorus cross-sections opposite-sign dimuons

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