Search for single production of vector-like quarks decaying into Wb in pp collisions at √s=13 TeV with the ATLAS detector

被引：0

作者：

Aaboud, M. ^{[54
,55
]}

Aad, G. ^{[153
]}

Abbott, B. ^{[181
]}

Abdinov, O. ^{[18
]}

Abeloos, B. ^{[185
]}

Abhayasinghe, D. K. ^{[144
]}

Abidi, S. H. ^{[229
]}

AbouZeid, O. S. ^{[61
]}

Abraham, N. L. ^{[216
]}

Abramowicz, H. ^{[222
]}

Abreu, H. ^{[221
]}

Abulaiti, Y. ^{[8
]}

Acharya, B. S. ^{[99
,100
,258
]}

Adachi, S. ^{[224
,225
]}

Adam, L. ^{[151
]}

Adamczyk, L. ^{[130
]}

Adelman, J. ^{[175
]}

Adersberger, M. ^{[166
]}

Adiguzel, A. ^{[16
,268
]}

Adye, T. ^{[203
]}

Affolder, A. A. ^{[205
]}

Afik, Y. ^{[221
]}

Agheorghiesei, C. ^{[40
]}

Aguilar-Saavedra, J. A. ^{[193
,198
]}

Ahmadov, F. ^{[18
,123
]}

Aielli, G. ^{[114
,115
]}

Akatsuka, S. ^{[133
]}

Akesson, T. P. A. ^{[147
]}

Akilli, E. ^{[78
]}

Akimov, A., V ^{[162
]}

Alberghi, G. L. ^{[33
,34
]}

Albert, J. ^{[240
]}

Albicocco, P. ^{[74
,75
]}

Alconada Verzini, M. J. ^{[137
,138
]}

Alderweireldt, S. ^{[172
]}

Aleksa, M. ^{[57
]}

Aleksandrov, I. N. ^{[123
]}

Alexa, C. ^{[39
]}

Alexopoulos, T. ^{[12
]}

Alhroob, M. ^{[181
]}

Ali, B. ^{[200
]}

Alimonti, G. ^{[104
]}

Alison, J. ^{[58
]}

Alkire, S. P. ^{[208
]}

Allaire, C. ^{[185
]}

Allbrooke, B. M. M. ^{[216
]}

Allen, B. W. ^{[184
]}

Allport, P. P. ^{[31
]}

Aloisio, A. ^{[106
,107
]}

Alonso, A. ^{[61
]}

机构：

[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia

[2] SUNY Albany, Dept Phys, Albany, NY 12222 USA

[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[4] Ankara Univ, Dept Phys, Ankara, Turkey

[5] Istanbul Aydin Univ, Istanbul, Turkey

[6] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey

[7] Univ Grenoble Alpes, Univ Savoie Mt Blanc, IN2P3, CNRS,LAPP, Annecy, France

[8] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA

[9] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[10] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA

[11] Natl & Kapodistrian Univ Athens, Phys Dept, Athens, Greece

[12] Natl Tech Univ Athens, Phys Dept, Zografos, Greece

[13] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[14] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[15] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey

[16] Bogazici Univ, Dept Phys, Istanbul, Turkey

[17] Gaziantep Univ, Dept Phys Engn, Gaziantep, Turkey

[18] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan

[19] Barcelona Inst Sci & Technol, Inst Fis Altes Energies, Barcelona, Spain

[20] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

[21] Tsinghua Univ, Phys Dept, Beijing, Peoples R China

[22] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China

[23] Univ Chinese Acad Sci, Beijing, Peoples R China

[24] Univ Belgrade, Inst Phys, Belgrade, Serbia

[25] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[26] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA USA

[27] Univ Calif Berkeley, Berkeley, CA 94720 USA

[28] Humboldt Univ, Inst Phys, Berlin, Germany

[29] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

[30] Univ Bern, Lab High Energy Phys, Bern, Switzerland

[31] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[32] Univ Antonio Narino, Ctr Invest, Bogota, Colombia

[33] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[34] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[35] Univ Bonn, Phys Inst, Bonn, Germany

[36] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA

[37] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA

[38] Transilvania Univ Brasov, Brasov, Romania

[39] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[40] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania

[41] Natl Inst Res & Dev Isotop & Mol Technol, Phys Dept, Cluj Napoca, Romania

[42] West Univ Timisoara, Timisoara, Romania

[43] Comenius Univ, Fac Math, Phys & Informat, Bratislava, Slovakia

[44] Slovak Acad Sci, Inst Expt Phys, Dept Subnucl Phys, Kosice, Slovakia

[45] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[46] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[47] Univ Cambridge, Cavendish Lab, Cambridge, England

[48] Univ Cape Town, Dept Phys, Cape Town, South Africa

[49] Univ Johannesburg, Dept Mech Engn Sci, Johannesburg, South Africa

[50] Univ Witwatersrand, Sch Phys, Johannesburg, South Africa

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 05期

基金：

巴西圣保罗研究基金会; 加拿大自然科学与工程研究理事会; 欧盟地平线“2020”;

关键词：

Exotics; Hadron-Hadron scattering (experiments); PROTON-PROTON COLLISIONS; PAIR PRODUCTION; PLUS PLUS; T QUARK; BOSON;

D O I：

10.1007/JHEP05(2019)164

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 singly produced vector-like quarks Q, where Q can be either a T quark with charge +2/3 or a Y quark with charge -4/3, is performed in proton-proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 36.1 fb(-1), recorded with the ATLAS detector at the LHC in 2015 and 2016. The analysis targets Q -> Wb decays where the W boson decays leptonically. No significant deviation from the expected Standard Model background is observed. Upper limits are set on the QWb coupling strength and the mixing between the Standard Model sector and a singlet T quark or a Y quark from a (B, Y) doublet or a (T, B, Y) triplet, taking into account the interference effects with the Standard Model background. The upper limits set on the mixing angle are as small as vertical bar sin theta(L)vertical bar = 0.18 for a singlet T quark of mass 800 GeV, vertical bar sin theta(R)vertical bar = 0.17 for a Y quark of mass 800 GeV in a (B, Y) doublet model and vertical bar sin theta(L)vertical bar = 0: 16 for a Y quark of mass 800 GeV in a (T, B, Y) triplet model. Within a (B, Y) doublet model, the limits set on the mixing parameter vertical bar sin theta(R)vertical bar are comparable with the exclusion limits from electroweak precision observables in the mass range between about 900 GeV and 1250 GeV.

引用

页数：56

共 102 条

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