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

A. Kayis-Topaksu, G. Onengüt, M. de Jong, O. Melzer, R. G.C. Oldeman, E. Pesen, F. R. Spada, R. van Dantzig, J. L. Visschers, M. Güler, M. Serin-Zeyrek, R. Sever, P. Tolun, M. T. Zeyrek, N. Armenise, M. G. Catanesi, M. De Serio, M. Ieva, M. T. Muciaccia, E. RadicioniS. Simone, A. Bülte, K. Winter, R. El-Aidi, B. Van de Vyver, P. Vilain, G. Wilquet, B. Saitta, E. Di Capua, S. Ogawa, H. Shibuya, A. Artamonov, M. Chizhov, M. Doucet, I. R. Hristova, T. Kawamura, D. Kolev, H. Meinhard, J. Panman, I. M. Papadopoulos, S. Ricciardi, A. Rozanov, R. 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, M. Nakamura, T. Nakano, K. Narita, K. Niu, K. Niwa, N. Nonaka, O. Sato, T. Toshito, S. Buontempo, A. G. Cocco, N. D'Ambrosio, G. De Lellis, F. Di Capua, G. De Rosa, A. Ereditato, G. Fiorillo, M. Messina, P. Migliozzi, C. Pistillo, L. Scotto 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, I. Tezuka

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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 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\.

Original languageEnglish
Pages (from-to)48-57
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume549
Issue number1-2
DOIs
Publication statusPublished - 2002 Nov 28

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    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., ... Tezuka, I. (2002). Determination of the semi-leptonic branching fraction of charm hadrons produced in neutrino charged-current interactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 549(1-2), 48-57. https://doi.org/10.1016/S0370-2693(02)02865-4