First observation of a tau neutrino charged current interaction with charm production in the OPERA experiment OPERA Collaboration

被引：4

作者：

Agafonova, N. ^{[1
,2
]}

Aleksandrov, A. ^{[3
]}

Anokhina, A. ^{[2
]}

Aoki, S. ^{[4
]}

Ariga, A. ^{[5
]}

Ariga, T. ^{[5
,6
]}

Bertolin, A. ^{[7
]}

Bozza, C. ^{[8
,9
]}

Brugnera, R. ^{[7
,10
]}

Buonaura, A. ^{[3
,11
,40
]}

Buontempo, S. ^{[3
]}

Chernyavskiy, M. ^{[12
]}

Chukanov, A. ^{[13
]}

Consiglio, L. ^{[3
]}

D'Ambrosio, N. ^{[14
]}

De Lellis, G. ^{[3
,11
,15
]}

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

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

Di Crescenzo, A. ^{[3
,11
]}

Di Ferdinando, D. ^{[19
]}

Di Marco, N. ^{[14
]}

Dmitrievski, S. ^{[13
]}

Dracos, M. ^{[20
]}

Duchesneau, D. ^{[18
]}

Dusini, S. ^{[7
]}

Dzhatdoev, T. ^{[2
]}

Ebert, J. ^{[21
]}

Ereditato, A. ^{[5
]}

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

Fornari, F. ^{[19
,22
]}

Fukuda, T. ^{[23
]}

Galati, G. ^{[3
,11
]}

Garfagnini, A. ^{[7
,10
]}

Gentile, V ^{[3
,24
]}

Goldberg, J. ^{[25
]}

Gorbunov, S. ^{[12
]}

Gornushkin, Y. ^{[13
]}

Grella, G. ^{[9
,26
]}

Guler, A. M. ^{[27
]}

Gustavino, C. ^{[28
]}

Hagner, C. ^{[21
]}

Hara, T. ^{[4
]}

Hayakawa, T. ^{[23
]}

Hollnagel, A. ^{[21
]}

Ishiguro, K. ^{[23
]}

Iuliano, A. ^{[3
,11
]}

Jakovcic, K. ^{[29
]}

Jollet, C. ^{[20
]}

Kamiscioglu, C. ^{[27
,30
]}

Kamiscioglu, M. ^{[27
]}

机构：

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

[2] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, SINP MSU, Moscow 119991, Russia

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

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

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

[6] Kyushu Univ, Fac Arts & Sci, Fukuoka, Japan

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

[8] Univ Salerno, Dipartimento Matemat, I-84084 Salerno, Italy

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

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

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

[12] Russian Acad Sci, LPI, Lebedev Phys Inst, Moscow 119991, Russia

[13] Joint Inst Nucl Res, JINR, Dubna 141980, Russia

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

[15] CERN, Geneva, Switzerland

[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, LAPP, IN2P3, CNRS, F-74941 Annecy Le Vieux, France

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

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

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

[22] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy

[23] Nagoya Univ, Nagoya, Aichi 4648602, Japan

[24] Natl Univ Sci & Technol, MISiS, Moscow, Russia

[25] Technion, Dept Phys, IL-32000 Haifa, Israel

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

[27] Middle East Tech Univ, METU, TR-06800 Ankara, Turkey

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

[29] Rudjer Boskovic Inst, Zagreb 10002, Croatia

[30] Ankara Univ, TR-06560 Ankara, Turkey

[31] Gyeongsang Natl Univ, 900 Gazwa Dong, Jinju 660701, South Korea

[32] Rudjer Boskovic Inst, Ctr Excellence Adv Mat & Sensing Devices, Zagreb 10002, Croatia

[33] Aichi Univ Educ, Kariya, Aichi 4488542, Japan

[34] Toho Univ, Funabashi, Chiba 2748510, Japan

[35] Nihon Univ, Narashino, Chiba 2758576, Japan

[36] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Rome, Italy

[37] Moscow Engn Phys Inst Moscow, Moscow, Russia

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

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

[40] Univ Zurich, Phys Inst, Zurich, Switzerland

[41] INAF Osservatorio Astrofis & Sci Spazio, Bologna, Italy

[42] Univ Liverpool, Liverpool, Merseyside, England

来源：

EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 08期

基金：

俄罗斯基础研究基金会; 新加坡国家研究基金会;

关键词：

PARTICLES; EMULSION; SYSTEM; EVENT; DECAY;

D O I：

10.1140/epjc/s10052-020-8160-y

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

An event topology with two secondary vertices compatible with the decay of short-lived particles was found in the analysis of neutrino interactions in the OPERA target. The observed topology is compatible with tau neutrino charged current (CC) interactions with charm production and neutrino neutral current (NC) interactions with cc pair production. However, other processes can mimic this topology. A dedicated analysis was implemented to identify the underlying process. A Monte Carlo simulation was developed and complementary procedures were introduced in the kinematic reconstruction. A multivariate analysis technique was used to achieve an optimal separation of signal from background. Most likely, this event is a nu(tau) CC interaction with charm production, the tau and charm particle decaying into 1 prong and 2 prongs, respectively. The significance of this observation is evaluated.

引用

页数：10

共 2 条

[1] Opera neutrino oscillation experiment: on the way to vτ observation
Kreslo, Igor E.
DISCRETE 08: SYMPOSIUM ON PROSPECTS IN THE PHYSICS OF DISCRETE SYMMETRIES, 2009, 171
[2] Study of charged hadron multiplicities in charged-current neutrino-lead interactions in the OPERA detector
Agafonova, N.
Aleksandrov, A.
Anokhina, A.
Aoki, S.
Ariga, A.
Ariga, T.
Bertolin, A.
Bodnarchuk, I.
Bozza, C.
Brugnera, R.
Buonaura, A.
Buontempo, S.
Chernyavskiy, M.
Chukanov, A.
Consiglio, L.
D'Ambrosio, N.
De Lellis, G.
De Serio, M.
Sanchez, P. del Amo
Di Crescenzo, A.
Di Ferdinando, D.
Di Marco, N.
Dmitrievski, S.
Dracos, M.
Duchesneau, D.
Dusini, S.
Dzhatdoev, T.
Ebert, J.
Ereditato, A.
Fini, R. A.
Fornari, F.
Fukuda, T.
Galati, G.
Garfagnini, A.
Gentile, V.
Goldberg, J.
Gornushkin, Y.
Gorbunov, S.
Grella, G.
Guler, A. M.
Gustavino, C.
Hagner, C.
Hara, T.
Hayakawa, T.
Hollnagel, A.
Hosseini, B.
Ishiguro, K.
Jakovcic, K.
Jollet, C.
Kamiscioglu, C.
EUROPEAN PHYSICAL JOURNAL C, 2018, 78 (01):

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