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

Agafonova, N.; Brugnera, R.; Marco, N. Di; Подгрудков, Д.; Patrizii, L.; Rokujo, H.; Naganawa, N.; Shibuya, H.; Shchedrina, T.; Buonaura, A.; Giacomelli, G.; Sanchez, P. del Amo; Bertolin, A.; Güler, M.; Schembri, Adam; Aoki, Shigeki; Omura, T.; Okateva, N.; Polukhina, N.; Dzhatdoev, T.; Ariga, T.; Kreslo, I.; Pozzato, M.; Yoon, C. S.; Matsuo, T.; Muciaccia, M. T.; Nakatsuka, Y.; Hollnagel, A.; Grella, G.; Dusini, S.; Stipčević, M.; Jollet, C.; Rosa, G. De; Kliček, B.; Mandrioli, G.; Göllnitz, C.; Paoloni, A.; Consiglio, L.; Ogawa, S.; Pupilli, F.; Duchesneau, D.; Morishima, Keisuke; Garfagnini, A.; Ishida, Hirokazu; Zemskova, S.; Pasqualini, L.; Ereditato, A.; Meregaglia, A.; Sato, Osamu; Nakamura, Mitsuhiro; Aleksandrov, A.; Ozaki, K.; Stellacci, Simona Maria; Kawada, J.; Vilain, P.; Tufanli, S.; Crescenzo, A. Di; Köse, U.; Kodama, K.; Zghiche, A.; Meyer, M.; Ebert, J.; Park, I.G.; Strolin, P.; Roda, M.; Kamiscioglu, M.; Park, B.D.; Hagner, C.; Sirignano, C.; Kim, S.H.; Tenti, M.; Lellis, G. De; Kamiscioglu, C.; Takahashi, Satoru; Mauri, N.; Monacelli, P.; Shakiryanova, I. R.; Sioli, M.; Naka, Takashi; Buontempo, S.; Старков, Н. И.; Оlshevsky, А.G.; D’Ambrosio, N.; Büttner, B.; Spinetti, M.; Galati, G.; Terranova, F.; Pastore, Alessandro; Ljubičić, A.; Роганова, Т. М.; Fini, R. A.; Rostovtseva, I.; Wonsak, B.; Lauria, A.; Nakano, T.; Jakovčić, K.; Shoziyoev, G.; Gustavino, C.; Hosseini, B.; Kim, J.H.; Pessard, H.; Sato, Yoshihiro; Fukuda, Tsutomu; Malenica, Maša; Goloubkov, D.; Ryazhskaya, O. G.; Bozza, C.; Chernyavsky, M.; Sheshukov, A.; Ishiguro, K.; Mikado, S.; Zaitsev, Yu.; Chukanov, A.; Vladimirov, M. S.; Pistillo, C.; Longhin, A.; Ferdinando, D. Di; Montesi, M.C.; Tioukov, V.; Simone, S.; Medinaceli, E.; Gornushkin, Y.; Goldberg, J.; Vuilleumier, J. L.; Votano, L.; Dracos, M.; Lenkeit, J.; Matveev, V.; Niwa, K.; Kitagawa, N.; Komatsu, M.; Sirri, G.; Stančo, L.; Loverre, P.; Hara, T.; Serio, M. De; Bender, D.; Wilquet, G.; Dmitrievski, S.; Anokhina, A.; Shiraishi, Takeshi; Malgin, A. S.; Ariga, A.

doi:10.1088/1748-0221/11/07/p07022

Cited by 6 publications

(7 citation statements)

References 23 publications

(35 reference statements)

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“…from the combination between the MINOS and Bugey 34 experiment; during the combination the systematics between both experiments are taken to be uncorrelated. The combined limit is compared to LSND 16 looking at electron anti-neutrino appearance ν µ → ν e , and several limits for electron neutrino appearance ν µ → ν e : MiniBoonE 17 , OPERA 35 , ICARUS 36 , and NOMAD 37 .…”

Section: A Model Independent Approachmentioning

confidence: 99%

Search for Sterile Neutrinos with the MINOS Long-Baseline Experiment

Timmons

2016

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This document presents the latest results for a 3+1 sterile neutrino search using the 10.56×10 20 protons-on-target data set taken from 2005 -2012. By searching for oscillations driven by a large mass splitting, MINOS is sensitive to the existence of sterile neutrinos through any energy dependent deviations using a charged current sample, as well as looking at any relative deficit between neutral current events between the far and near detectors. This document will discuss the novel analysis that enabled a search for sterile neutrinos setting a limit in the previously unexplored regions in the parameter space {∆m 2 41 , sin 2 θ24}. The results presented can be compared to the parameter space suggested by LSND and MiniBooNE and complements other previous experimental searches for sterile neutrinos in the electron neutrino appearance channel.

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Section: A Model Independent Approachmentioning

confidence: 99%

Search for Sterile Neutrinos with the MINOS Long-Baseline Experiment

Timmons

2016

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“…Data compared with the expectation from the 3 neutrino flavour oscillation model allow setting an upper limit on the ν e appearance probability. Moreover, the hypothesis of a sterile neutrino, as hinted by LSND [7], MiniBooNE [8], reactor [9], and radio-chemical [10,11] [13]. The CNGS beam was an almost pure muon neutrino beam having a mean energy of 17 GeV.…”

Section: Introductionmentioning

confidence: 99%

Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam

Agafonova

Aleksandrov

Anokhina

et al. 2018

J. High Energ. Phys.

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Abstract:The OPERA experiment has discovered the tau neutrino appearance in the CNGS muon neutrino beam, in agreement with the 3 neutrino flavour oscillation hypothesis. The OPERA neutrino interaction target, made of Emulsion Cloud Chambers, was particularly efficient in the reconstruction of electromagnetic showers. Moreover, thanks to the very high granularity of the emulsion films, showers induced by electrons can be distinguished from those induced by π 0 s, thus allowing the detection of charged current interactions of electron neutrinos. In this paper the results of the search for electron neutrino events using the full dataset are reported. An improved method for the electron neutrino energy estimation is exploited. Data are compatible with the 3 neutrino flavour mixing model expectations and are used to set limits on the oscillation parameters of the 3+1 neutrino mixing model, in which an additional mass eigenstate m 4 is introduced. At high ∆m 2 41 ( 0.1 eV 2 ), an upper limit on sin 2 2θ µe is set to 0.021 at 90% C.L. and ∆m 2 41 4 × 10 −3 eV 2 is excluded for maximal mixing in appearance mode.

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“…Each of the two super-modules was followed by a magnetic spectrometer used to identify muons and measure their charge and momentum 20 , 34 . Each spectrometer consisted of a dipolar iron magnet, whose magnetic field was orthogonal to the neutrino beam, and hence to the average muon direction.…”

Section: Methodsmentioning

confidence: 99%

OPERA tau neutrino charged current interactions

et al. 2021

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The OPERA experiment was designed to discover the vτ appearance in a vμ beam, due to neutrino oscillations. The detector, located in the underground Gran Sasso Laboratory, consisted of a nuclear photographic emulsion/lead target with a mass of about 1.25 kt, complemented by electronic detectors. It was exposed from 2008 to 2012 to the CNGS beam: an almost pure vμ beam with a baseline of 730 km, collecting a total of 1.8·1020 protons on target. The OPERA Collaboration eventually assessed the discovery of vμ→vτ oscillations with a statistical significance of 6.1 σ by observing ten vτ CC interaction candidates. These events have been published on the Open Data Portal at CERN. This paper provides a detailed description of the vτ data sample to make it usable by the whole community.

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

Cited by 6 publications

References 23 publications

Search for Sterile Neutrinos with the MINOS Long-Baseline Experiment

Search for Sterile Neutrinos with the MINOS Long-Baseline Experiment

Final results of the search for νμ → νe oscillations with the OPERA detector in the CNGS beam

OPERA tau neutrino charged current interactions

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