Study of neutrino interactions with the electronic detectors of the OPERA experiment

Agafonova, N.; Aleksandrov, A.; Altinok, O.; Anokhina, A.; Aoki, Shigeki; Ariga, A.; Ariga, T.; Autiero, D.; Badertscher, A.; Bagulya, A.; Bendhahbi, A; Bertolin, A.; Bozza, C.; Brugière, T.; Brugnera, R.; Brunet, F.; Brunetti, G.; Buontempo, S.; Cazes, A.; Chaussard, L.; Chernyavskiy, M.; Chiarella, V.; Chukanov, A.; D’Ambrosio, N.; Corso, F. Dal; Lellis, G. De; Sanchez, P. del Amo; Déclais, Y.; Serio, M. De; Capua, F. Di; Crescenzo, A. Di; Ferdinando, D. Di; Marco, N. Di; Dmitrievski, S.; Dracos, M.; Duchesneau, D.; Dusini, S.; Dzhatdoev, T.; Ebert, J.; Egorov, O. K.; Enikeev, R. I.; Ereditato, A.; Esposito, L. S.; Favier, Jean; Ferber, T.; Fini, R. A.; Frekers, D.; Fukuda, Tsutomu; Garfagnini, A.; Giacomelli, G.; Giorgini, M.; Göllnitz, C.; Goldberg, J.; Golubkov, D.; Гончарова, Л. А.; Gornushkin, Y.; Grella, G.; Grianti, F.; Guler, A. M.; Gustavino, C.; Hagner, C.; Hamada, K.; Hara, T.; Hierholzer, M.; Hollnagel, A.; Hoshino, K.; Ieva, M.; Ishida, Hirokazu; Jakovčić, K.; Jollet, C.; Juget, F.; Kamiscioglu, M.; Kazuyama, K; Kim, S H; Kimura, Mitsuhiro; Kitagawa, N.; Kliček, B.; Knuesel, J.; Kodama, K.; Komatsu, M.; Köse, U.; Kreslo, I.; Kubota, H.; Lazzaro, C.; Lenkeit, J.; Lippi, I.; Ljubičić, A.; Longhin, A.; Loverre, P.; Lutter, G.; Malgin, A. S.; Mandrioli, G.; Mannai, K.; Marteau, J.; Matsuo, T.; Matveev, V.; Mauri, N.; Medinaceli, E.; Meisel, Frank; Meregaglia, A.; Migliozzi, P.; Mikado, S.; Miyamoto, Seigo; Monacelli, P.; Morishima, Keisuke; Moser, U.; Muciaccia, M. T.; Naganawa, N.; Naka, Takashi; Nakamura, Mitsuhiro; Nakano, T.; Naumov, D.; Nikitina, V.; Niwa, K.; Nonoyama, Y.; Ogawa, S.; Okateva, N.; Olchevskiy, A; Paniccia, M.; Paoloni, A.; Park, B D; Park, I G; Pastore, A.; Patrizii, L.; Pennacchio, E.; Pessard, H.; Pretzl, K.; Pilipenko, V. V.; Pistillo, C.; Polukhina, N.; Pozzato, M.; Pupilli, F.; Rescigno, R.; Роганова, Т. М.; Rokujo, H.; Romano, G.; Rosa, G.; Rostovtseva, I.; Rubbia, A.; Russo, A.; Ryasny, V. G.; Ryazhskaya, O. G.; Sato, Osamu; Sato, Yoshihiro; Schembri, Adam; Schmidt‐Parzefall, W.; Schroeder, H.; Lavina, L. Scotto; Sheshukov, A.; Shibuya, H.; Shoziyeov, G; Simone, S.; Sioli, M.; Sirignano, C.; Sirri, G.; Song, J.; Spinetti, M.; Stančo, L.; Starkov, N.; Stipčević, M.; Strauss, T.; Strolin, P.; Takahashi, Satoru; Tenti, M.; Terranova, F.; Tezuka, I.; Tioukov, V.; Tolun, P.; Trabelsi, A.; Tran, T. H.; Tufanli, S.; Vilain, P.; Vladimirov, M. S.; Votano, L.; Vuilleumier, J. L.; Wilquet, G.; Wonsak, B.; Yakushev, V. F.; Yoon, C. S.; Yoshioka, T.; Yoshida, J.; Zaitsev, Yu.; Zemskova, S.; Zghiche, A.; Zimmermann, R.

doi:10.1088/1367-2630/13/5/053051

Cited by 59 publications

(64 citation statements)

References 14 publications

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“…The energy of the ν e candidates is estimated from the reconstructed energy deposition in the TT making use of a calibration obtained through the MC simulation in a similar way as for the ν µ CC and neutral-current (NC) events as described in [16]. The estimated energy resolution for an energy range up to 100 GeV can be parametrized as:…”

Section: Jhep07(2013)004mentioning

confidence: 99%

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Search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam

Agafonova¹,

Aleksandrov²,

Anokhina³

et al. 2013

J. High Energ. Phys.

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A first result of the search for ν µ → ν e oscillations in the OPERA experiment, located at the Gran Sasso Underground Laboratory, is presented. The experiment looked for the appearance of ν e in the CNGS neutrino beam using the data collected in 2008 and 2009. Data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. A further analysis of the same data constrains the non-standard oscillation parameters θ new and ∆m 2 new suggested by the LSND and MiniBooNE experiments. For large ∆m 2 new values (>0.1 eV 2 ), the OPERA 90% C.L. upper limit on sin 2 (2θ new ) based on a Bayesian statistical method reaches the value 7.2 × 10 −3 .

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Section: Jhep07(2013)004mentioning

confidence: 99%

“…The integrated contamination of ν e and ν e CC interactions at Gran Sasso, relative to the integrated number of ν µ CC interactions, is 0.88% and 0.05%, respectively. [6,16].…”

mentioning

confidence: 99%

Search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam

Agafonova¹,

Aleksandrov²,

Anokhina³

et al. 2013

J. High Energ. Phys.

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show abstract

“…Profiting from the information given by the muon spectrometers, results are provided separately for muon neutrinos and anti-neutrinos present in the CNGS beam. Indeed, ∼4% of the Charged Current (CC) interactions in the surrounding rock and inside the detector result fromν µ interactions [4]. …”

Section: Introductionmentioning

confidence: 99%

Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data

Adam¹,

Agafonova²,

Aleksandrov³

et al. 2013

J. High Energ. Phys.

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In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laboratory used an upgraded setup compared to the 2011 measurements, improving the measurement time accuracy. An independent timing system based on the Resistive Plate Chambers was exploited providing a time accuracy of ∼1 ns. Neutrino and anti-neutrino contributions were separated using the information provided by the OPERA magnetic spectrometers. The new analysis profited from the precision geodesy measurements of the neutrino baseline and of the CNGS/LNGS clock synchronization. The neutrino arrival time with respect to the one computed assuming the speed of light in vacuum is found to be δt ν ≡ T OF c − T OF ν = (0.6±0.4 (stat.)±3.0 (syst.)) ns and δtν ≡ T OF c −T OFν = (1.7±1.4 (stat.)±3.1 (syst.)) ns for ν µ andν µ , respectively. This corresponds to a limit on the muon neutrino velocity with respect to the speed of light of −1.8 × 10 −6 < (v ν − c)/c < 2.3 × 10 −6 at 90% C.L. This new measurement confirms with higher accuracy the revised OPERA result.

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“…For both types of simulation muon trajectories have been reconstructed and their momenta evaluated using the full OPERA analysis chain [22].…”

Section: Monte Carlo Simulationsmentioning

confidence: 99%

“…A sample of CNGS beam CC neutrino interactions has been generated in the detector target, using the full OPERA simulation chain MC-II described above [22]. Figure 6 shows the distribution of the product of the reconstructed muon momentum p µ and its charge in a range extending from −150 GeV/c to 100 GeV/c that includes essentially all events.…”

Section: Simulation Of Cngs Neutrinos CC Interactionsmentioning

confidence: 99%

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

Agafonova

Brugnera

Marco³

et al. 2016

J. Inst.

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The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of ν τ in the CNGS ν µ beam. Two large muon magnetic spectrometers are used to identify muons produced in the τ leptonic decay and in ν µ 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 ν µ 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.

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Study of neutrino interactions with the electronic detectors of the OPERA experiment

Cited by 59 publications

References 14 publications

Search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam

Search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam

Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data

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

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