Neutrino production of opposite sign dimuons in the NOMAD experiment

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 antineutrino-induced opposite sign dimuon events with $E_{\mu 1}, E_{\mu 2} > 4.5$ GeV, $15 < E_{\nu} < 300$ GeV and $Q^{2} > 1\;(\mbox{GeV}/\m...

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Detalles Bibliográficos
Autores principales: Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, Bassompierre, Gabriel, Benslama, K, Besson, N, Bird, I, Blumenfeld, B, Bobisut, F, Bouchez, J, Boyd, S, Bueno, A G, Bunyatov, S A, Camilleri, L L, Cardini, A, Cattaneo, Paolo Walter, Cavasinni, V, Cervera-Villanueva, A, Collazuol, G, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R D, Daniels, D C, Degaudenzi, H M, De Santo, A, Del Prete, T, Dignan, T, Di Lella, L, do Couto e Silva, E, Dumarchez, J, Ellis, M, Fazio, T, Feldman, G J, Ferrari, R, Ferrère, D, Flaminio, Vincenzo, Fraternali, M, Gaillard, Jean-Marc, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Gninenko, S N, Godley, A, Gómez-Cadenas, J J, Gosset, J, Gössling, C, Gouanère, M, Grant, A, Graziani, G, Guglielmi, A M, Hagner, C, Hernando, J, Hubbard, D B, Hurst, P, Hyett, N, Iacopini, E, Joseph, C L, Juget, F R, Kirsanov, M M, Klimov, O L, Kokkonen, J, Kovzelev, A, Krasnoperov, A V, Kuznetsov, V, Lacaprara, S, Lakic, B, Lanza, A, La Rotonda, L, Laveder, M, Letessier-Selvon, A A, Lévy, J M, Linssen, Lucie, Ljubicic, A, Long, J, Lupi, A, Manola-Poggioli, E, Marchionni, A, Martelli, F, Méchain, X, Mendiburu, J P, Meyer, J P, Mezzetto, Mauro, Mishra, S R, Moorhead, G F, Mossuz, L, Nédélec, P, Nefedov, Yu A, Nguyen-Mau, C, Orestano, D, Pastore, F, Peak, L S, Pennacchio, E, Pessard, H, Petti, R, Placci, Alfredo, Pluquet, A, Polesello, G, Pollmann, D, Polyarush, A Yu, Popov, B, Poulsen, C, Rathouit, P, Roda, C, Rubbia, André, Salvatore, F, Schahmaneche, K, Schmidt, B, Schmidt, T, Sevior, M E, Sillou, D, Soler, F J P, Sozzi, G, Steele, D, Steininger, M, Stiegler, U, Stipcevic, M, Stolarczyk, T, Tareb-Reyes, M, Taylor, G N, Tereshchenko, S, Toropin, A N, Touchard, A M, Tovey, Stuart N, Tran, M T, Tsesmelis, E, Ulrichs, J, Vacavant, L, Valdata-Nappi, M, Valuev, V Yu, Vannucci, François, Varvell, K E, Veltri, M, Vercesi, V, Verkindt, D, Vieira, J M, Vinogradova, T G, Vo, M K, Weber, F, Weisse, T, Wilson, F F, Winton, L J, Yabsley, B D, Zaccone, Henri, Zuber, K, Zuccon, P
Lenguaje:eng
Publicado: 2000
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(00)00612-2
http://cds.cern.ch/record/452940
Descripción
Sumario: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 antineutrino-induced opposite sign dimuon events with $E_{\mu 1}, E_{\mu 2} > 4.5$ GeV, $15 < E_{\nu} < 300$ GeV and $Q^{2} > 1\;(\mbox{GeV}/\mbox{c})^{2}$ are observed %in the data from the 1995 and 1996 runs. in the Front-Calorimeter of NOMAD during the 1995 and 1996 runs. The analysis yields a value for the charm quark mass of $m_{c} = 1.3^{+0.3\;+0.3}_{-0.3\;-0.3}\;\mbox{GeV}/\m box{c}^{2}$ and for the average semileptonic branching ratio of $B_{c} = 0.095^{+0.007\;+0.014}_{-0.007\;-0.013}$. The ratio of the strange to non-strange sea in the nucleon is measured to be $\kappa = 0.48^{+0.09 +0.17}_{-0.07 -0.12}$. The measured rate of charm-induced dimuon relative to single muon, as a function of neutrino energy, is consistent with the slow rescaling hypothesis of heavy quark production.

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