Search for heavy neutral leptons in final states with electrons, muons, and hadronically decaying tau leptons in proton-proton collisions at √s=13 TeV

被引：0

作者：

Hayrapetyan, A. ^{[1
]}

Tumasyan, A. ^{[1
,209
]}

Adam, W. ^{[2
]}

Andrejkovic, J. W. ^{[2
]}

Bergauer, T. ^{[2
]}

Chatterjee, S. ^{[2
,62
]}

Damanakis, K. ^{[2
]}

Dragicevic, M. ^{[2
]}

Hussain, P. S. ^{[2
]}

Jeitler, M. ^{[2
,210
]}

Krammer, N. ^{[2
]}

Li, A. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I. ^{[2
]}

Schieck, J. ^{[2
,210
]}

Schoefbeck, R. ^{[2
]}

Schwarz, D. ^{[2
]}

Sonawane, M. ^{[2
]}

Templ, S. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C. -E. ^{[2
,210
]}

Darwish, M. R. ^{[3
,211
]}

Janssen, T. ^{[3
]}

Van Mechelen, P. ^{[3
]}

Bols, E. S. ^{[4
]}

Breugelmans, N. ^{[4
]}

D'Hondt, J. ^{[4
]}

Dansana, S. ^{[4
]}

De Moor, A. ^{[4
]}

Delcourt, M. ^{[4
]}

Heyen, F. ^{[4
]}

Lowette, S. ^{[4
]}

Makarenko, I. ^{[4
]}

Mueller, D. ^{[4
]}

Tavernier, S. ^{[4
]}

Tytgat, M. ^{[4
,6
]}

Van Onsem, G. P. ^{[4
]}

Van Putte, S. ^{[4
]}

Vannerom, D. ^{[4
]}

Clerbaux, B. ^{[5
]}

Das, A. K. ^{[5
]}

De Lentdecker, G. ^{[5
]}

Evard, H. ^{[5
]}

Favart, L. ^{[5
]}

Gianneios, P. ^{[5
]}

Hohov, D. ^{[5
]}

Jaramillo, J. ^{[5
]}

Khalilzadeh, A. ^{[5
]}

Khan, F. A. ^{[5
]}

Lee, K. ^{[5
,108
]}

机构：

[1] Yerevan Phys Inst, Yerevan, Armenia

[2] Inst Hochenergiephys, Vienna, Austria

[3] Univ Antwerp, Antwerp, Belgium

[4] Vrije Univ Brussel, Brussels, Belgium

[5] Univ Libre Bruxelles, Brussels, Belgium

[6] Univ Ghent, Ghent, Belgium

[7] Catholic Univ Louvain, Louvain La Neuve, Belgium

[8] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[9] Univ Estado Rio De Janeiro, Rio De Janeiro, Brazil

[10] Univ Estadual Paulista, Univ Fed ABC, Sao Paulo, Brazil

[11] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[12] Univ Sofia, Sofia, Bulgaria

[13] Univ Tarapaca, Inst Alta Invest, Casilla 7 D, Arica, Chile

[14] Beihang Univ, Beijing, Peoples R China

[15] Tsinghua Univ, Dept Phys, 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] Sun Yat Sen Univ, Guangzhou, Peoples R China

[19] Univ Sci & Technol China, Hefei, Peoples R China

[20] Nanjing Normal Univ, Nanjing, Peoples R China

[21] Fudan Univ, Inst Modern Phys, Shanghai, Peoples R China

[22] Fudan Univ, Key Lab Nucl Phys & Ionbeam Applicat MOE, Shanghai, Peoples R China

[23] Zhejiang Univ, Hangzhou, Zhejiang, Peoples R China

[24] Univ Los Andes, Bogota, Colombia

[25] Univ Antioquia, Medellin, Colombia

[26] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[27] Univ Split, Fac Sci, Split, Croatia

[28] Inst Rudjer Boskov, Zagreb, Croatia

[29] Univ Cyprus, Nicosia, Cyprus

[30] Charles Univ Prague, Prague, Czech Republic

[31] Escuela Politec Nacl, Quito, Ecuador

[32] Univ San Francisco Quito, Quito, Ecuador

[33] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt

[34] Fayoum Univ, Ctr High Energy Phys CHEP FU, Al Fayyum, Egypt

[35] NICPB, Tallinn, Estonia

[36] Univ Helsinki, Dept Phys, Helsinki, Finland

[37] Helsinki Inst Phys, Helsinki, Finland

[38] Lappeenranta Lahti Univ Technol, Lappeenranta, Finland

[39] Univ Paris Saclay, CEA, IRFU, Gif Sur Yvette, France

[40] Inst Polytech Paris, Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, Palaiseau, France

[41] Univ Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France

[42] Inst Phys 2 Infinis Lyon IP2I, Villeurbanne, France

[43] Georgian Tech Univ, Tbilisi, Georgia

[44] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[45] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[46] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[47] DESY, Hamburg, Germany

[48] Univ Hamburg, Hamburg, Germany

[49] Karlsruher Inst Technol, Karlsruhe, Germany

[50] NCSR Demokritos, INPP, Aghia Paraskevi, Greece

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 06期

基金：

欧洲研究理事会; 欧盟地平线“2020”; 美国国家科学基金会; 芬兰科学院; 巴西圣保罗研究基金会; 英国科学技术设施理事会;

关键词：

Beyond Standard Model; Hadron-Hadron Scattering; MAJORANA NEUTRINOS; PHYSICS; MASSES; BOUNDS;

D O I：

10.1007/JHEP06(2024)123

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 for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at root s = 13TeV= 13 TeV is presented. The data were collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 138 fb(-1). Events with three charged leptons (electrons, muons, and hadronically decaying tau leptons) are selected, corresponding to HNL production in association with a charged lepton and decay of the HNL to two charged leptons and a standard model (SM) neutrino. The search is performed for HNL masses between 10 GeV and 1.5 TeV. No evidence for an HNL signal is observed in data. Upper limits at 95% confidence level are found for the squared coupling strength of the HNL to SM neutrinos, considering exclusive coupling of the HNL to a single SM neutrino generation, for both Majorana and Dirac HNLs. The limits exceed previously achieved experimental constraints for a wide range of HNL masses, and the limits on tau neutrino coupling scenarios with HNL masses above the W boson mass are presented for the first time.

引用

页数：61

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