Latest results of the OPERA experiment on nu-tau appearance in the CNGS neutrino beam

被引：0

作者：

Agafonova N. ^{[1
]}

Alexandrov A. ^{[2
]}

Anokhina A. ^{[3
]}

Aoki S. ^{[4
]}

Ariga A. ^{[5
]}

Ariga T. ^{[5
,6
]}

Bertolin A. ^{[7
]}

Bozza C. ^{[8
]}

Brugnera R. ^{[7
,9
]}

Buonaura A. ^{[2
,10
]}

Buontempo S. ^{[2
]}

Chernyavskiy M. ^{[11
]}

Chukanov A. ^{[12
]}

Consiglio L. ^{[2
]}

D'Ambrosio N. ^{[13
]}

De Lellis G. ^{[2
,10
]}

De Serio M. ^{[14
,15
]}

del Amo Sanchez P. ^{[16
]}

Di Crescenzo A. ^{[2
,10
]}

Di Ferdinando D. ^{[17
]}

Di Marco N. ^{[13
]}

Dmitrievsky S. ^{[12
]}

Dracos M. ^{[18
]}

Duchesneau D. ^{[16
]}

Dusini S. ^{[7
]}

Dzhatdoev T. ^{[3
]}

Ebert J. ^{[19
]}

Ereditato A. ^{[5
]}

Favier J. ^{[16
]}

Fini R.A. ^{[15
]}

Fornari F. ^{[17
,20
]}

Fukuda T. ^{[21
]}

Galati G. ^{[2
,10
]}

Garfagnini A. ^{[7
,9
]}

Gentile V. ^{[22
]}

Goldberg J. ^{[23
]}

Gorbunov S. ^{[11
]}

Gornushkin Y. ^{[12
]}

Grella G. ^{[8
]}

Guler A.M. ^{[24
]}

Gustavino C. ^{[25
]}

Hagner C. ^{[19
]}

Hara T. ^{[4
]}

Hayakawa T. ^{[21
]}

Hollnagel A. ^{[19
]}

Ishiguro K. ^{[21
]}

Iuliano A. ^{[2
,10
]}

Jakovcic K. ^{[26
]}

Jollet C. ^{[18
]}

Kamiscioglu C. ^{[24
,27
]}

机构：

[1] INR - Institute for Nuclear Research, Russian Academy of Sciences, Moscow

[2] INFN Sezione di Napoli, Napoli

[3] SINP MSU - Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow

[4] Kobe University, Kobe

[5] Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), University of Bern, Bern

[6] Faculty of Arts and Science, Kyushu University, Fukuoka

[7] INFN Sezione di Padova, Padova

[8] Dipartimento di Fisica dell'Università di Salerno, "Gruppo Collegato" INFN, Fisciano (Salerno)

[9] Dipartimento di Fisica e Astronomia, dell'Università di Padova, Padova

[10] Dipartimento di Fisica, dell'Università Federico II di Napoli, Napoli

[11] LPI - Lebedev Physical Institute of the Russian Academy of Sciences, Moscow

[12] JINR - Joint Institute for Nuclear Research, Dubna

[13] INFN - Laboratori Nazionali del Gran Sasso, Assergi (L'Aquila)

[14] Dipartimento di Fisica, dell'Università di Bari, Bari

[15] INFN Sezione di Bari, Bari

[16] LAPP, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy-le-Vieux

[17] INFN Sezione di Bologna, Bologna

[18] IPHC, Université de Strasbourg, CNRS/IN2P3, Strasbourg

[19] Hamburg University, Hamburg

[20] Dipartimento di Fisica e Astronomia, dell'Università di Bologna, Bologna

[21] Nagoya University, Nagoya

[22] GSSI - Gran Sasso Science Institute, L'Aquila

[23] Department of Physics, Technion, Haifa

[24] METU - Middle East Technical University, Ankara

[25] INFN Sezione di Roma, Roma

[26] Ruder Boskovic Institute, Zagreb

[27] Ankara University, Ankara

[28] Gyeongsang National University, 900 Gazwa-dong, Jinju

[29] Center of Excellence for Advanced Materials and Sensing Devices, Ruder Boskovic Institute, Zagreb

[30] Aichi University of Education, Kariya (Aichi-Ken)

[31] Toho University, Funabashi

[32] Nihon University, Narashino, Chiba

[33] INFN - Laboratori Nazionali di Frascati dell'INFN, Frascati (Roma)

[34] MEPhI - Moscow Engineering Physics Institute, Moscow

[35] Dipartimento di Fisica, dell'Università di Milano-Bicocca, Milano

[36] HSE - National Research University, Higher School of Economics, Moscow

[37] IIHE, Université Libre de Bruxelles, Brussels

来源：

Physical Review Letters | 2019年 / 01期

关键词：

Long-baseline experiments - Multivariate approach - Neutrino beams - Oscillation parameters - Statistical uncertainty;

D O I：

10.21468/SciPostPhysProc.1.028

中图分类号：

学科分类号：

摘要：

OPERA is a long-baseline experiment designed to search for νμ → ντ oscillations in appearance mode. It was based at the INFN Gran Sasso laboratory (LNGS) and took data from 2008 to 2012 with the CNGS neutrino beam from CERN. After the discovery of ντ appearance in 2015, with 5.1σ significance, the criteria to select ντ candidates have been extended and a multivariate approach has been used for events identification. In this way the statistical uncertainty in the measurement of the oscillation parameters and of ντ properties has been improved. Results are reported. © 2019 American Physical Society. All rights reserved.

引用

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