Discovery of τ Neutrino Appearance in the CNGS Neutrino Beam with the OPERA Experiment

被引：116

作者：

Agafonova, N. ^{[1
]}

Aleksandrov, A. ^{[2
]}

Anokhina, A. ^{[3
]}

Aoki, S. ^{[4
]}

Ariga, A. ^{[5
]}

Ariga, T. ^{[5
]}

Bender, D. ^{[6
]}

Bertolin, A. ^{[7
]}

Bodnarchuk, I. ^{[8
]}

Bozza, C. ^{[9
,10
]}

Brugnera, R. ^{[7
,11
]}

Buonaura, A. ^{[2
,12
]}

Buontempo, S. ^{[2
]}

Buettner, B. ^{[13
]}

Chernyavsky, M. ^{[14
]}

Chukanov, A. ^{[8
]}

Consiglio, L. ^{[2
]}

D'Ambrosio, N. ^{[15
]}

De Lellis, G. ^{[2
,12
]}

De Serio, M. ^{[16
,17
]}

Sanchez, P. Del Amo ^{[18
]}

Di Crescenzo, A. ^{[2
]}

Di Ferdinando, D. ^{[19
]}

Di Marco, N. ^{[15
]}

Dmitrievski, S. ^{[8
]}

Dracos, M. ^{[20
]}

Duchesneau, D. ^{[18
]}

Dusini, S. ^{[7
]}

Dzhatdoev, T. ^{[3
]}

Ebert, J. ^{[13
]}

Ereditato, A. ^{[5
]}

Fini, R. A. ^{[17
]}

Fornari, F. ^{[19
,21
]}

Fukuda, T. ^{[22
]}

Galati, G. ^{[2
,12
]}

Garfagnini, A. ^{[7
,11
]}

Goldberg, J. ^{[23
]}

Gornushkin, Y. ^{[8
]}

Grella, G. ^{[9
,10
]}

Guler, A. M. ^{[6
]}

Gustavino, C. ^{[24
]}

Hagner, C. ^{[13
]}

Hara, T. ^{[4
]}

Hayakawa, H. ^{[25
]}

Hollnagel, A. ^{[13
]}

Hosseini, B. ^{[2
,12
]}

Ishiguro, K. ^{[25
]}

Jakovcic, K. ^{[26
]}

Jollet, C. ^{[20
]}

Kamiscioglu, C. ^{[6
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, RUS-117312 Moscow, Russia

[2] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[3] Moscow MV Lomonosov State Univ, SINP MSU Skobeltsyn Inst Nucl Phys, RUS-119991 Moscow, Russia

[4] Kobe Univ, J-6578501 Kobe, Hyogo, Japan

[5] Univ Bern, High Energy Phys Lab, Albert Einstein Ctr Fundamental Phys, CH-3012 Bern, Switzerland

[6] Middle E Tech Univ, TR-06531 Ankara, Turkey

[7] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[8] Joint Inst Nucl Res, RUS-141980 Dubna, Russia

[9] Univ Salerno, Dipartimento Fis, I-84084 Salerno, Italy

[10] Ist Nazl Fis Nucl, Grp Collegato, I-84084 Salerno, Italy

[11] Univ Padua, Dipartimento Fis & Astron, I-35131 Padua, Italy

[12] Univ Naples Federico II, Dipartimento Fis, I-80125 Naples, Italy

[13] Univ Hamburg, D-22761 Hamburg, Germany

[14] Russian Acad Sci, PN Lebedev Phys Inst, RUS-119991 Moscow, Russia

[15] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy

[16] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[17] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[18] Univ Savoie Mt Blanc, CNRS, LAPP, IN2P3, F-74941 Annecy Le Vieux, France

[19] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy

[20] Univ Strasbourg, CNRS, IN2P3, IPHC, F-67037 Strasbourg, France

[21] Univ Bologna, Dipartmento Fis & Astron, I-40127 Bologna, Italy

[22] Toho Univ, J-2748510 Funabashi, Chiba, Japan

[23] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[24] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[25] Nagoya Univ, J-4648602 Nagoya, Aichi, Japan

[26] Rudjer Boskovic Inst, HR-10002 Zagreb, Croatia

[27] Gyeongsang Natl Univ, Jinju 660701, South Korea

[28] Aichi Univ Educ, J-4488542 Kariya, Aichi, Japan

[29] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy

[30] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[31] Nihon Univ, J-2758576 Narashino, Chiba, Japan

[32] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy

[33] Univ Libre Bruxelles, IIHE, B-1050 Brussels, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 12期

基金：

新加坡国家研究基金会; 俄罗斯基础研究基金会;

关键词：

SCATTERING; GENERATOR; TARGET; EVENT; MUONS;

D O I：

10.1103/PhysRevLett.115.121802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The OPERA experiment was designed to search for nu(mu) -> nu(tau) oscillations in appearance mode, i.e., by detecting the tau leptons produced in charged current nu(tau) interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso beam. The observation of the nu(mu) -> nu(tau) appearance, achieved with four candidate events in a subsample of the data, was previously reported. In this Letter, a fifth nu(tau) candidate event, found in an enlarged data sample, is described. Together with a further reduction of the expected background, the candidate events detected so far allow us to assess the discovery of nu(mu) -> nu(tau) oscillations in appearance mode with a significance larger than 5 sigma.

引用

页数：7

共 40 条

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