Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at √s=13 TeV

被引：0

作者：

Tumasyan, A. ^{[1
]}

Adam, W. ^{[2
]}

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

Bergauer, T. ^{[2
]}

Chatterjee, S. ^{[2
]}

Dragicevic, M. ^{[2
]}

Del Valle, A. Escalante ^{[2
]}

Fruhwirth, R. ^{[2
,217
]}

Jeitler, M. ^{[2
,217
]}

Krammer, N. ^{[2
]}

Lechner, L. ^{[2
]}

Liko, D. ^{[2
]}

Mikulec, I ^{[2
]}

Paulitsch, P. ^{[2
]}

Pitters, F. M. ^{[2
]}

Schieck, J. ^{[2
,217
]}

Schofbeck, R. ^{[2
]}

Spanring, M. ^{[2
]}

Templ, S. ^{[2
]}

Waltenberger, W. ^{[2
]}

Wulz, C-E ^{[2
,217
]}

Chekhovsky, V ^{[3
]}

Litomin, A. ^{[3
]}

Makarenko, V ^{[3
]}

Darwish, M. R. ^{[4
,218
]}

De Wolf, E. A. ^{[4
]}

Janssen, T. ^{[4
]}

Kello, T. ^{[4
,6
]}

Lelek, A. ^{[4
]}

Sfar, H. Rejeb ^{[4
]}

Van Mechelen, P. ^{[4
]}

Van Putte, S. ^{[4
]}

Van Remortel, N. ^{[4
]}

Blekman, F. ^{[5
]}

Bols, E. S. ^{[5
]}

D'Hondt, J. ^{[5
]}

De Clercq, J. ^{[5
]}

Delcourt, M. ^{[5
]}

El Faham, H. ^{[5
]}

Lowette, S. ^{[5
]}

Moortgat, S. ^{[5
]}

Morton, A. ^{[5
]}

Muller, D. ^{[5
]}

Sahasransu, A. R. ^{[5
]}

Tavernier, S. ^{[5
]}

Van Doninck, W. ^{[5
]}

Van Mulders, P. ^{[5
]}

Stylianou, N. ^{[5
,166
]}

Beghin, D. ^{[6
]}

Bilin, B. ^{[6
]}

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] Unive 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, Peoples R China

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

[21] Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai, Peoples R China

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

[23] Univ Los Andes, Bogota, Colombia

[24] Univ Antioquia, Medellin, Colombia

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

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

[27] Inst Rudjer Boskovic, Zagreb, Croatia

[28] Univ Cyprus, Nicosia, Cyprus

[29] Charles Univ Prague, Prague, Czech Republic

[30] Escuela Politec Nacl, Quito, Ecuador

[31] Univ San Francisco Quito, Quito, Ecuador

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

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

[34] NICPB, Tallinn, Estonia

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

[36] Helsinki Inst Phys, Helsinki, Finland

[37] Lappeenranta Univ Technol, Lappeenranta, Finland

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

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

[40] Univ Strasbourg, CNRS, IPHC UMR 717, Strasbourg, France

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

[42] Georgian Tech Univ, Tbilisi, Georgia

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

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

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

[46] DESY, Hamburg, Germany

[47] Univ Hamburg, Hamburg, Germany

[48] Karlsruher Inst Technol, Karlsruhe, Germany

[49] NCSR Demokritos, Inst Nucl & Particle Phys INPP, Aghia Paraskevi, Greece

[50] Natl & Kapodistrian Univ Athens, Athens, Greece

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2022年 / 05期

基金：

芬兰科学院; 巴西圣保罗研究基金会; 欧盟地平线“2020”; 俄罗斯基础研究基金会; 欧洲研究理事会;

关键词：

Beyond Standard Model; Hadron-Hadron Scattering; Vector-Like Quarks;

D O I：

10.1007/JHEP05(2022)093

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 single production of a vector-like T quark with charge 2/3 e, in the decay channel featuring a top quark and a Z boson, with the top quark decaying hadronically and the Z boson decaying to neutrinos. The search uses data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb(-1) recorded at the CERN LHC in 2016-2018. The search is sensitive to a T quark mass between 0.6 and 1.8 TeV with decay widths ranging from negligibly small up to 30% of the T quark mass. Reconstruction strategies for the top quark are based on the degree of Lorentz boosting of its final state. At 95% confidence level, the upper limit on the product of the cross section and branching fraction for a T quark of small decay width varies between 15 and 602 fb, depending on its mass. For a T quark with decay widths between 10 and 30% of its mass, this upper limit ranges between 16 and 836 fb. For most of the studied range, the results provide the best limits to date. This is the first search for single T quark production based on the full Run 2 data set of the LHC.

引用

页数：49

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