Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at √s=13 TeV

被引：8

作者：

Aad, G. ^{[155
]}

Abbott, B. ^{[184
]}

Abbott, D. C. ^{[156
]}

Abud, A. Abed ^{[60
]}

Abeling, K. ^{[80
]}

Abhayasinghe, D. K. ^{[147
]}

Abidi, S. H. ^{[45
]}

Aboulhorma, A. ^{[59
]}

Abramowicz, H. ^{[227
]}

Abreu, H. ^{[226
]}

Abulaiti, Y. ^{[6
]}

Abusleme Hoffman, A. C. ^{[208
]}

Acharya, B. S. ^{[103
,104
,252
]}

Achkar, B. ^{[80
]}

Adam, L. ^{[153
]}

Bourdarios, C. Adam ^{[5
]}

Adamczyk, L. ^{[133
]}

Adamek, L. ^{[233
]}

Addepalli, S., V ^{[36
]}

Adelman, J. ^{[175
]}

Adiguzel, A. ^{[14
,253
]}

Adorni, S. ^{[81
]}

Adye, T. ^{[205
]}

Affolder, A. A. ^{[207
]}

Afik, Y. ^{[60
]}

Agapopoulou, C. ^{[101
]}

Agaras, M. N. ^{[16
]}

Agarwala, J. ^{[112
,113
]}

Aggarwal, A. ^{[172
]}

Agheorghiesei, C. ^{[39
]}

Aguilar-Saavedra, J. A. ^{[195
,200
,254
]}

Ahmad, A. ^{[60
]}

Ahmadov, F. ^{[127
,255
]}

Ahmed, W. S. ^{[157
]}

Ai, X. ^{[72
,73
]}

Aielli, G. ^{[118
,119
]}

Aizenberg, I ^{[248
]}

Akatsuka, S. ^{[136
]}

Akbiyik, M. ^{[153
]}

Akesson, T. P. A. ^{[150
]}

Akimov, A., V ^{[164
]}

Al Khoury, K. ^{[63
]}

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

Albert, J. ^{[244
]}

Albicocco, P. ^{[78
]}

Alconada Verzini, M. J. ^{[140
,141
]}

Alderweireldt, S. ^{[77
]}

Aleksa, M. ^{[60
]}

Aleksandrov, I. N. ^{[127
]}

Alexa, C. ^{[38
]}

机构：

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

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

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

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

[5] Univ Savoie Mt Blanc, LAPP, CNRS IN2P3, Annecy, France

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

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

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

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

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

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

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

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

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

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

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

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

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

[19] Nanjing Univ, Dept Phys, Nanjing, Peoples R China

[20] Univ Chinese Acad Sci UCAS, Beijing, Peoples R China

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

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

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

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

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

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

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

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

[29] Univ Antonio Narino, Fac Ciencias, Bogota, Colombia

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

[31] Univ Nacl Colombia, Dept Fis, Bogota, Colombia

[32] Univ Bologna, Dipartimento Fis & Astron Righi, Bologna, Italy

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

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

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

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

[37] Transilvania Univ Brasov, Brasov, Romania

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

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

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

[41] Univ Politehn Bucuresti, Bucharest, Romania

[42] West Univ Timisoara, Timisoara, Romania

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

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

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

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

[47] Univ Buenos Aires, IFIBA, Buenos Aires, DF, Argentina

[48] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina

[49] Calif State Univ Long Beach, Long Beach, CA 90840 USA

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

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 03期

基金：

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

关键词：

D O I：

10.1103/PhysRevD.106.032005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for events with two displaced vertices from long-lived particle (LLP) pairs using data collected by the ATLAS detector at the LHC is presented. This analysis uses 139 fb(-1) of proton-proton collision data at root s=13 TeV recorded in 2015-2018. The search employs techniques for reconstructing vertices of LLPs decaying to jets in the muon spectrometer displaced between 3 and 14 m with respect to the primary interaction vertex. The observed numbers of events are consistent with the expected background and limits for several benchmark signals are determined. For the Higgs boson with a mass of 125 GeV, the paper reports the first exclusion limits for branching fractions into neutral long-lived particles below 0.1%, while branching fractions above 10% are excluded at 95% confidence level for LLP proper lifetimes ranging from 4 cm to 72.4 m. In addition, the paper present the first results for the decay of LLPs into (tt) over bar in the ATLAS muon spectrometer.

引用

页数：28

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