Neutrino production of opposite sign dimuons in the NOMAD experiment

Authors
Astier, P Autiero, D Baldisseri, A Baldo-Ceolin, M Ballocchi, G Banner, M Bassompierre, G Benslama, K Besson, N Bird, I Blumenfeld, B Bobisut, F Bouchez, J Boyd, S Bueno, A Bunyatov, S Camilleri, L Cardini, A Cattaneo, PW Cavasinni, V Cervera-Villanueva, A Collazuol, GM Conforto, G Conta, C Contalbrigo, M Cousins, R Daniels, D Degaudenzi, H De Santo, A Del Prete, T Dignan, T Di Lella, L Silva, ED Dumarchez, J Ellis, M Fazio, T Feldman, GJ Ferrari, R Ferrere, D Flaminio, V Fraternali, M Gaillard, JM Gangler, E Geiser, A Geppert, D Gibin, D Gninenko, S Godley, A Gomez-Ccdeenas, JJ Gosset, J Gossling, C Gouanere, M Grant, A Graziani, G Cuglielmi, A Hagner, C Hernando, J Hubbard, D Hurst, P Hyett, N Iacopini, E Joseph, C Juget, F Kirsanov, M Klimov, O Kokkonen, J Kovzelev, A Krasnoperov, A Kuznetsov, V Lacaprara, S Lakic, B Lanza, A La Rotonda, L Laveder, M Letessier-Selvon, A Levy, JM Linssen, L Ljubicic, A Long, J Lupi, A Manola-Poggioli, E Marchionni, A Martelli, F Mechain, X Mendiburu, JP Meyer, JP Mezzetto, M Mishra, SR Moorhead, GF Mossuz, L Nedelec, P Nefedov, Y Nguyen-Mau, C Orestano, D Pastore, F Peak, LS Pennacchio, E Pessard, H Petti, R Placci, A Pluquet, A Polesello, G Pollmann, D Polyarush, A Popov, B Poulsen, C Rathouit, P Roda, C Rubbia, A Salvatore, F Schahmaneche, K Schmidt, B Schmidt, T Sevior, ME Sillou, D Soler, FJP Sozzi, G Steele, D Steininger, M Stiegler, U Stipcevic, M Stolarczyk, T Tareb-Reyes, M Taylor, GN Tereshchenko, S Toropin, A Touchard, AM Tovey, SN Tran, MT Tsesmelis, E Ulrichs, J Vacavant, L Valdata-Nappi, M Valuev, V Vannucci, F Varvell, KE Veltri, M Vercesi, V Verkindt, D Vieira, JM Vinogradova, T Vo, MK Weber, F Weisse, T Wilson, F Winton, LJ Yabsley, BD Zaccone, H Zuber, K Zuccon, P
Citation
P. Astier et al., Neutrino production of opposite sign dimuons in the NOMAD experiment, PHYS LETT B, 486(1-2), 2000, pp. 35-48
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
486
Issue
1-2
Year of publication
2000
Pages
35 - 48
Database
ISI
SICI code
0370-2693(20000727)486:1-2<35:NPOOSD>2.0.ZU;2-6
Abstract
The NOMAD Collaboration presents a study of opposite sign dimuon events in the framework of Leading Order QCD. A total of 2714 neutrino- and 115 antin eutrino-induced opposite sign dimuon events with E-mu 1, E-mu 2 > 4.5 GeV, 15 < E-nu < 300 GeV and Q(2) > 1 (GeV/c)(2) are observed in the Front-Calor imeter of NOMAD during the 1995 and 1996 runs. The analysis yields a value for the charm quark mass of m(c) = 1.3(-0.3-0.3)(+0.3+0.3) GeV/c(2) and fur the average semileptonic branching ratio of B-c = 0.095(-0.007-0.013)(+0.0 07+0.014). The ratio of the strange to non-strange sea in the nucleon is me asured to be kappa = 0.48(-0.07-0.12)(+0.09+0.17). The measured rate of cha rm-induced dimuon relative to single muon, as a function of neutrino energy , is consistent with the slow rescaling hypothesis of heavy quark productio n. (C) 2000 Published by Elsevier Science B.V.