Determination of the muon charge sign with the dipolar spectrometers of the OPERA experiment (CROSBI ID 232242)
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Podaci o odgovornosti
Agafonova, N. ; Aleksandrov, A. ; Anokhina, A. ; Aoki, S. ; Ariga, A. ; Ariga, T. ; Bender, D. ; Bertolin, A. ; Bozza, C. ; Brugnera, R. ; Buonaura, A. ; Buontempo, S. ; Buettner, B. ; Chernyavsky, M. ; Chukanov, A. ; Consiglio, L. ; D'Ambrosio, N. ; De Lellis, G. ; De Serio, M. ; Del Amo Sanchez, P. ; Di Crescenzo, A. ; Di Ferdinando, D. ; Di Marco, N. ; Dmitrievski, S. ; Dracos, M. ; Duchesneau, D. ; Dusini, S. ; Dzhatdoev, T. ; Ebert, J. ; Ereditato, A. ; Fini, R. A. ; Fukuda, T. ; Galati, G. ; Garfagnini, A. ; Giacomelli, G. ; Goellnitz, C. ; Goldberg, J. ; Goloubkov, D. ; Gornushkin, Y. ; Grella, G. ; Guler, M. ; Gustavino, C. ; Hagner, C. ; Hara, T. ; Hollnagel, A. ; Hosseini, B. ; Ishida, H. ; Ishiguro, K. ; Jakovčić, Krešimir ; Jollet, C. ; Kamiscioglu, C. ; Kamiscioglu, M. ; Kawada, J. ; Kim, J. H. ; Kim, S. H. ; Kitagawa, N. ; Kliček, Budimir ; Kodama, K. ; Komatsu, M. ; Kose, U. ; Kreslo, I. ; Lauria, A. ; Lenkeit, J. ; Ljubičić, Ante ; Longhin, A. ; Loverre, P. ; Malgin, A. ; Malenica, Marko ; Mandrioli, G. ; Matsuo, T. ; Matveev, V. ; Mauri, N. ; Medinaceli, E. ; Meregaglia, A. ; Meyer, M. ; Mikado, S. ; Monacelli, P. ; Montesi, M. C. ; Morishima, K. ; Muciaccia, M. T. ; Naganawa, N. ; Naka, T. ; Nakamura, M. ; Nakano, T. ; Nakatsuka, Y. ; Niwa, K. ; Ogawa, S. ; Okateva, N. ; Olchevsky, A. ; Omura, T. ; Ozaki, K. ; Paoloni, A. ; Park, B. D. ; Park, I. G. ; Pasqualini, L. ; Pastore, A. ; Patrizii, L. ; Pessard, H. ; Pistillo, C. ; Podgrudkov, D. ; Polukhina, N. ; Pozzato, M. ; Pupilli, F. ; Roda, M. ; Roganova, T. ; Rokujo, H. ; Rosa, G. ; Rostovtseva, I. ; Ryazhskaya, O. ; Sato, O. ; Sato, Y. ; Schembri, A. ; Shakirianova, I. ; Shchedrina, T. ; Sheshukov, A. ; Shibuya, H. ; Shiraishi, T. ; Shoziyoev, G. ; Simone, S. ; Sioli, M. ; Sirignano, C. ; Sirri, G. ; Spinetti, M. ; Stanco, L. ; Starkov, N. ; Stellacci, S. M. ; Stipčević, Mario ; Strolin, P. ; Takahashi, S. ; Tenti, M. ; Terranova, F. ; Tioukov, V. ; Tufanli, S. ; Vilain, P. ; Vladymyrov, M. ; Votano, L. ; Vuilleumier, J. L. ; Wilquet, G. ; Wonsak, B. ; Yoon, C. S. ; Zaitsev, Y. ; Zemskova, S. ; Zghiche, A.
OPERA Collaboration
engleski
Determination of the muon charge sign with the dipolar spectrometers of the OPERA experiment
The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of ντ in the CNGS νμ beam. Two large muon magnetic spectrometers are used to identify muons produced in the τ leptonic decay and in νμ CC interactions by measuring their charge and momentum. Besides the kinematic analysis of the τ decays, background resulting from the decay of charmed particles produced in νμ CC interactions is reduced by efficiently identifying the muon track. A new method for the charge sign determination has been applied, via a weighted angular matching of the straight track-segments reconstructed in the different parts of the dipole magnets. Results obtained for Monte Carlo and real data are presented. Comparison with a method where no matching is used shows a significant reduction of up to 40% of the fraction of wrongly determined charges.
muon spectrometers ; neutrino detectors ; large detector-systems performance ; particle tracking detectors
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