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Determination of the muon charge sign with the dipolar spectrometers of the OPERA experiment

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Title
Determination of the muon charge sign with the dipolar spectrometers of the OPERA experiment
Author(s)
N. Agafonova; A. Aleksandrov; Anokhina A.; S. Aoki; A. Ariga; T. Ariga; D. Bender; A. Bertolin; C. Bozza; R. Brugnera; A. Buonaura; S. Buontempo; B. Büttner; M. Chernyavsky; A. Chukanov; L. Consiglio; N. D’Ambrosio; G. De Lellis; M. De Serio; P. Del Amo Sanchez; A. Di Crescenzo; D. Di Ferdinando; N. Di Marco; S. Dmitrievski; M. Dracos; D. Duchesneau; S. Dusini; T. Dzhatdoev; J. Ebert; A. Ereditato; R.A. Fini; T. Fukuda; G. Galati; A. Garfagnini; G. Giacomelli; C. Göllnitz; J. Goldberg; D. Goloubkov; Y. Gornushkin; G. Grella; M. Guler; C. Gustavino; C. Hagner; T. Hara; A. Hollnagel; B. Hosseini; H. Ishida; K. Ishiguro; K. Jakovcic; C. Jollet; C. Kamiscioglu; M. Kamiscioglu; J. Kawada; J.H. Kim; S.H. Kim; N. Kitagawa; B. Klicek; K. Kodama; M. Komatsu; U. Kose; I. Kreslo; A. Lauria; J. Lenkeit; A. Ljubicic; A. Longhin; P. Loverre; A. Malgin; M. Malenica; G. Mandrioli; T. Matsuo; V. Matveev; N. Mauri; E. Medinaceli; A. Meregaglia; M. Meyer; S. Mikado; P. Monacelli; M.C. Montesi; K. Morishima; M.T. Muciaccia; N. Naganawa; T. Naka; M. Nakamura; T. Nakano; Y. Nakatsuka; K. Niwa; S. Ogawa; N. Okateva; A. Olshevsky; T. Omura; K. Ozaki; A. Paoloni; B.D. Park; I.G. Park; L. Pasqualini; A. Pastore; L. Patrizii; H. Pessard; C. Pistillo; D. Podgrudkov; N. Polukhina; M. Pozzato; F. Pupilli; M. Roda; H. Rokujo; T. Roganova; G. Rosa; I. Rostovtseva; O. Ryazhskaya; O. Sato; Y. Sato; A. Schembri; I. Shakiryanova; T. Shchedrina; A. Sheshukov; H. Shibuya; T. Shiraishi; G. Shoziyoev; S. Simone; M. Sioli; C. Sirignano; G. Sirri; M. Spinetti; L. Stanco; N. Starkov; S. M. Stellacci; M. Stipcevic; P. Strolin; S. Takahashi; M. Tenti; F. Terranova; V. Tioukov; S. Tufanli; P. Vilain; M. Vladimirov; L. Votano; J.L. Vuilleumier; G. Wilquet; B. Wonsak; C.S. Yoon; Y. Zaitsev; S. Zemskova; A. Zghiche
Publication Date
2016-07
Journal
Journal of Instrumentation, v.11, no.7, pp.P07022 -
Publisher
IOP PUBLISHING LTD
Abstract
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. (c) 2016 IOP Publishing Ltd and Sissa Medialab srl
URI
https://pr.ibs.re.kr/handle/8788114/4216
ISSN
1748-0221
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > Journal Papers (저널논문)
Files in This Item:
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