Search for the lepton flavor violating decay τ → 3μ in proton-proton collisions at √s=13 TeV

被引:0
作者
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Ambrogi, F. [2 ]
Bergauer, T. [2 ]
Dragicevic, M. [2 ]
Ero, J. [2 ]
Del Valle, A. Escalante [2 ]
Flechl, M. [2 ]
Fruhwirth, R. [2 ,217 ]
Jeitler, M. [2 ,217 ]
Kratschmer, I [2 ]
Liko, D. [2 ]
Madlener, T. [2 ]
Mikulec, I [2 ]
Rad, N. [2 ]
Schieck, J. [2 ,217 ]
Schofbeck, R. [2 ]
Spanring, M. [2 ]
Waltenberger, W. [2 ]
Wulz, C-E [2 ,217 ]
Zarucki, M. [2 ]
Drugakov, V [3 ]
Mossolov, V [3 ]
Gonzalez, J. Suarez [3 ]
Darwish, Mr [4 ]
De Wolf, Ea [4 ]
Di Croce, D. [4 ]
Janssen, X. [4 ]
Kello, T. [4 ,218 ]
Lelek, A. [4 ]
Pieters, M. [4 ]
Sfar, H. Rejeb [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Putte, S. [4 ]
Van Remortel, N. [4 ]
Blekman, F. [5 ]
Bols, E. S. [5 ]
Chhibra, S. S. [5 ]
D'Hondt, J. [5 ]
De Clercq, J. [5 ]
Lontkovskyi, D. [5 ]
Lowette, S. [5 ]
Marchesini, I [5 ]
Moortgat, S. [5 ]
Python, Q. [5 ]
Tavernier, S. [5 ]
Van Doninck, W. [5 ]
Van Mulders, P. [5 ]
机构
[1] Yerevan Phys Inst, Yerevan, Armenia
[2] Inst Hochenergiephys, Vienna, Austria
[3] Inst Nucl Problems, Minsk, BELARUS
[4] Univ Antwerp, Antwerp, Belgium
[5] Vrije Univ Brussel, Brussels, Belgium
[6] Univ Libre Bruxelles, Brussels, Belgium
[7] Univ Ghent, Ghent, Belgium
[8] Catholic Univ Louvain, Louvain La Neuve, Belgium
[9] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[10] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[11] Univ Estadual Paulista, Sao Paulo, Brazil
[12] Univ Fed ABC, Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, Sofia, Bulgaria
[15] Beihang Univ, Beijing, Peoples R China
[16] Tsinghua Univ, Dept Phys, Beijing, Peoples R China
[17] Inst High Energy Phys, Beijing, Peoples R China
[18] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[19] Sun Yat Sen Univ, Guangzhou, Guangdong, Peoples R China
[20] Zhejiang Univ, Hangzhou, Peoples R China
[21] Univ Los Andes, Bogota, Colombia
[22] Univ Antioquia, Medellin, Colombia
[23] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[24] Univ Split, Fac Sci, Split, Croatia
[25] Inst Rudjer Boskovic, Zagreb, Croatia
[26] Univ Cyprus, Nicosia, Cyprus
[27] Charles Univ Prague, Prague, Czech Republic
[28] Escuela Politec Nacl, Quito, Ecuador
[29] Univ San Francisco Quito, Quito, Ecuador
[30] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, Cairo, Egypt
[31] Fayoum Univ, Ctr High Energy Phys CHEP FU, Al Fayyum, Egypt
[32] NICPB, Tallinn, Estonia
[33] Univ Helsinki, Dept Phys, Helsinki, Finland
[34] Helsinki Inst Phys, Helsinki, Finland
[35] Lappeenranta Univ Technol, Lappeenranta, Finland
[36] Univ Paris Saclay, CEA, IRFU, Gif Sur Yvette, France
[37] Inst Polytech Paris, Lab Leprince Ringuet, Ecole Polytech, CNRS,IN2P3, Paris, France
[38] Univ Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
[39] Univ Lyon, Inst Phys Nucl Lyon, Univ Claude Bernard Lyon 1, CNRS,IN2P3, Villeurbanne, France
[40] Georgian Tech Univ, Tbilisi, Georgia
[41] Tbilisi State Univ, Tbilisi, Georgia
[42] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[43] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[44] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[45] DESY, Hamburg, Germany
[46] Univ Hamburg, Hamburg, Germany
[47] Karlsruher Inst Technol, Karlsruhe, Germany
[48] NCSR Demokritos, Inst Nucl & Particle Phys INPP, Aghia Paraskevi, Greece
[49] Natl & Kapodistrian Univ Athens, Athens, Greece
[50] Natl Tech Univ Athens, Athens, Greece
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 01期
基金
巴西圣保罗研究基金会; 欧盟地平线“2020”; 芬兰科学院; 欧洲研究理事会;
关键词
Hadron-Hadron scattering (experiments); Lepton production; Tau Physics;
D O I
10.1007/JHEP01(2021)163
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
Results are reported from a search for the lepton flavor violating decay tau -> 3 mu in proton-proton collisions at root s = 13 TeV. The data sample corresponds to an integrated luminosity of 33.2 fb(-1) recorded by the CMS experiment at the LHC in 2016. The search exploits tau leptons produced in both W boson and heavy-flavor hadron decays. No significant excess above the expected background is observed. An upper limit on the branching fraction B(tau -> 3 mu) of 8.0 x 10(-8) at 90% confidence level is obtained, with an expected upper limit of 6.9 x 10(-8).
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