Search for neutral long-lived particles that decay into displaced jets in the ATLAS calorimeter in association with leptons or jets using pp collisions at √s=13 TeV

被引：0

作者：

Aad, G. ^{[159
]}

Aakvaag, E. ^{[18
]}

Abbott, B. ^{[182
]}

Abdelhameed, S. ^{[177
]}

Abeling, K. ^{[81
]}

Abicht, N. J. ^{[74
]}

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

Aboelela, M. ^{[67
]}

Aboulhorma, A. ^{[58
,112
,188
,190
]}

Abramowicz, H. ^{[227
]}

Abreu, H. ^{[226
]}

Abulaiti, Y. ^{[179
]}

Acharya, B. S. ^{[105
,106
,259
]}

Ackermann, A. ^{[96
,190
]}

Bourdarios, C. Adam ^{[5
]}

Adamczyk, L. ^{[137
]}

Addepalli, S. V. ^{[35
]}

Addison, M. J. ^{[158
]}

Adelman, J. ^{[176
]}

Adiguzel, A. ^{[27
]}

Adye, T. ^{[201
]}

Affolder, A. A. ^{[203
]}

Afik, Y. ^{[61
]}

Agaras, M. N. ^{[14
]}

Agarwala, J. ^{[114
,115
]}

Aggarwal, A. ^{[157
]}

Agheorghiesei, C. ^{[38
]}

Ahmadov, F. ^{[60
,273
]}

Ahmed, W. S. ^{[161
]}

Ahuja, S. ^{[151
]}

Ai, X. ^{[95
]}

Aielli, G. ^{[120
,121
]}

Aikot, A. ^{[241
]}

Tamlihat, M. Ait ^{[58
]}

Aitbenchikh, B. ^{[55
]}

Akbiyik, M. ^{[157
]}

Akesson, T. P. A. ^{[154
]}

Akimov, A. V. ^{[60
]}

Akiyama, D. ^{[246
]}

Akolkar, N. N. ^{[33
]}

Aktas, S. ^{[25
]}

Al Khoury, K. ^{[63
]}

Alberghi, G. L. ^{[32
]}

Albert, J. ^{[243
]}

Albicocco, P. ^{[78
,79
]}

Albouy, G. L. ^{[87
]}

Alderweireldt, S. ^{[77
]}

Alegria, Z. L. ^{[183
]}

Aleksa, M. ^{[60
]}

Aleksandrov, I. N. ^{[60
]}

机构：

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

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

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

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

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

[6] Univ Paris Cite, APC, CNRS, IN2P3, Paris, France

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

[8] Univ Arizona, Dept Phys, Tucson, AZ USA

[9] Univ Texas Arlington, Dept Phys, Arlington, TX USA

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

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

[12] Univ Texas Austin, Dept Phys, Austin, TX USA

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

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

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

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

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

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

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

[20] Univ Calif Berkeley, Berkeley, CA USA

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

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

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

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

[25] Bogazici Univ, Dept Phys, Istanbul, Turkiye

[26] Gaziantep Univ, Dept Engn Phys, Gaziantep, Turkiye

[27] Istanbul Univ, Dept Phys, Istanbul, Turkiye

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

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

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

[31] Univ Bologna, Dipartimento Fis & Astron A Righi, Bologna, Italy

[32] INFN, Sez Bologna, Bologna, Italy

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

[34] Boston Univ, Dept Phys, Boston, MA USA

[35] Brandeis Univ, Dept Phys, Waltham, MA USA

[36] Transilvania Univ Brasov, Brasov, Romania

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

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

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

[40] Natl Univ Sci & Technol Politech, Bucharest, Romania

[41] West Univ Timisoara, Timisoara, Romania

[42] Univ Bucharest, Fac Phys, Bucharest, Romania

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

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

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

[46] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Buenos Aires, DF, Argentina

[47] Consejo Nacl Invest Cient & Tecn, Inst Fis Buenos Aires IFIBA, Buenos Aires, DF, Argentina

[48] Calif State Univ Los Angeles, Los Angeles, CA USA

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 11期

基金：

欧洲研究理事会; 日本学术振兴会; 瑞典研究理事会; 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; 中国国家自然科学基金;

关键词：

Beyond Standard Model; Exotics; Hadron-Hadron Scattering; Proton-Proton Scattering; PAIR PRODUCTION; HIGGS;

D O I：

10.1007/JHEP11(2024)036

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 neutral long-lived particles (LLPs) decaying in the ATLAS hadronic calorimeter using 140 fb(-1) of proton-proton collisions at root s = 13TeV delivered by the LHC is presented. The analysis is composed of three channels. The first targets pair-produced LLPs, where at least one LLP is produced with sufficiently low boost that its decay products can be resolved as separate jets. The second and third channels target LLPs respectively produced in association with a W or Z boson that decays leptonically. In each channel, different search regions target different kinematic regimes, to cover a broad range of LLP mass hypotheses and models. No excesses of events relative to the background predictions are observed. Higgs boson branching fractions to pairs of hadronically decaying neutral LLPs larger than 1% are excluded at 95% confidence level for proper decay lengths in the range of 30 cm to 4.5m depending on the LLP mass, a factor of three improvement on previous searches in the hadronic calorimeter. The production of long-lived dark photons in association with a Z boson with cross-sections above 0.1 pb is excluded for dark photon mean proper decay lengths in the range of 20 cm to 50 m, improving previous ATLAS results by an order of magnitude. Finally, long-lived photo-phobic axion-like particle models are probed for the first time by ATLAS, with production cross-sections above 0.1 pb excluded in the 0.1mm to 10m range.

引用

页数：52

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