Search for direct pair production of supersymmetric partners to the τ lepton in proton-proton collisions at √s=13TeV

被引:0
|
作者
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Ambrogi, F. [2 ]
Bergauer, T. [2 ]
Brandstetter, J. [2 ]
Dragicevic, M. [2 ]
Eroe, J. [2 ]
Del Valle, A. Escalante [2 ]
Flechl, M. [2 ]
Fruehwirth, R. [2 ,213 ]
Jeitler, M. [2 ,213 ]
Krammer, N. [2 ]
Kraetschmer, I [2 ]
Liko, D. [2 ]
Madlener, T. [2 ]
Mikulec, I [2 ]
Rad, N. [2 ]
Schieck, J. [2 ,213 ]
Schoefbeck, R. [2 ]
Spanring, M. [2 ]
Spitzbart, D. [2 ]
Waltenberger, W. [2 ]
Wulz, C-E [2 ,213 ]
Zarucki, M. [2 ]
Drugakov, V [3 ]
Mossolov, V [3 ]
Gonzalez, J. Suarez [3 ]
Darwish, M. R. [4 ]
De Wolf, E. A. [4 ]
Di Croce, D. [4 ]
Janssen, X. [4 ]
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 ]
Moreels, L. [5 ]
Python, Q. [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] Inst High Energy Phys, Beijing, Peoples R China
[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[18] Tsinghua Univ, Beijing, Peoples R China
[19] Univ Los Andes, Bogota, Colombia
[20] Univ Antioquia, Medellin, Colombia
[21] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[22] Univ Split, Fac Sci, Split, Croatia
[23] Inst Rudjer Boskovic, Zagreb, Croatia
[24] Univ Cyprus, Nicosia, Cyprus
[25] Charles Univ Prague, Prague, Czech Republic
[26] Escuela Politec Nacl, Quito, Ecuador
[27] Univ San Francisco Quito, Quito, Ecuador
[28] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
[29] NICPB, Tallinn, Estonia
[30] Univ Helsinki, Dept Phys, Helsinki, Finland
[31] Helsinki Inst Phys, Helsinki, Finland
[32] Lappeenranta Univ Technol, Lappeenranta, Finland
[33] Univ Paris Saclay, CEA, IRFU, Gif Sur Yvette, France
[34] Inst Polytech Paris, Lab Leprince Ringuet, Ecole Polytech, CNRS,IN2P3, Paris, France
[35] Univ Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
[36] Inst Natl Phys Nucl & Phys Particules, IN2P3, CNRS, Ctr Calcul, Villeurbanne, France
[37] Univ Lyon, Inst Phys Nucl Lyon, CNRS IN2P3, Univ Claude Bernard Lyon 1, Villeurbanne, France
[38] Georgian Tech Univ, Tbilisi, Georgia
[39] Tbilisi State Univ, Tbilisi, Georgia
[40] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[41] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[42] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[43] DESY, Hamburg, Germany
[44] Univ Hamburg, Hamburg, Germany
[45] Karlsruher Inst Technol, Karlsruhe, Germany
[46] NCSR Demokritos, Inst Nucl & Particle Phys INPP, Aghia Paraskevi, Greece
[47] Natl & Kapodistrian Univ Athens, Athens, Greece
[48] Natl Tech Univ Athens, Athens, Greece
[49] Univ Ioannina, Ioannina, Greece
[50] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary
来源
EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 03期
基金
欧盟地平线“2020”; 欧洲研究理事会; 芬兰科学院; 巴西圣保罗研究基金会;
关键词
E(+)E(-) COLLISIONS; MEASURING MASSES; SCALAR LEPTONS; MODEL; EXTENSION; INVARIANT;
D O I
10.1140/epjc/s10052-020-7739-7
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
A search is presented for t slepton pairs produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The search is carried out in events containing two t leptons in the final state, on the assumption that each t slepton decays primarily to a t lepton and a neutralino. Events are considered in which each t lepton decays to one or more hadrons and a neutrino, or in which one of the t leptons decays instead to an electron or a muon and two neutrinos. The data, collected with the CMS detector in 2016 and 2017, correspond to an integrated luminosity of 77.2 fb-1. The observed data are consistent with the standard model background expectation. The results are used to set 95% confidence level upper limits on the cross section for t slepton pair production in various models for t slepton masses between 90 and 200 GeV and neutralino masses of 1, 10, and 20 GeV. In the case of purely left-handed t slepton production and decay to a t lepton and a neutralino with a mass of 1GeV, the strongest limit is obtained for a t slepton mass of 125 GeV at a factor of 1.14 larger than the theoretical cross section.
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页数:34
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