Search for light long-lived neutral particles that decay to collimated pairs of leptons or light hadrons in pp collisions at √s=13 TeV with the ATLAS detector

被引：0

作者：

Aad, G. ^{[156
]}

Abbott, B. ^{[177
]}

Abbott, D. C. ^{[157
]}

Abud, A. Abed ^{[61
]}

Abeling, K. ^{[82
]}

Abhayasinghe, D. K. ^{[148
]}

Abidi, S. H. ^{[46
]}

Aboulhorma, A. ^{[60
]}

Abramowicz, H. ^{[222
]}

Abreu, H. ^{[221
]}

Abulaiti, Y. ^{[174
]}

Hoffman, A. C. Abusleme ^{[200
]}

Acharya, B. S. ^{[105
,106
,258
]}

Achkar, B. ^{[82
]}

Adam, L. ^{[154
]}

Bourdarios, C. Adam ^{[5
]}

Adamczyk, L. ^{[134
]}

Adamek, L. ^{[227
]}

Addepalli, S. V. ^{[37
]}

Adelman, J. ^{[171
]}

Adiguzel, A. ^{[28
]}

Adorni, S. ^{[83
]}

Adye, T. ^{[197
]}

Affolder, A. A. ^{[199
]}

Afik, Y. ^{[61
]}

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

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

Aggarwal, A. ^{[154
]}

Agheorghiesei, C. ^{[40
]}

Aguilar-Saavedra, J. A. ^{[192
]}

Ahmad, A. ^{[61
]}

Ahmadov, F. ^{[61
,264
]}

Ahmed, W. S. ^{[158
]}

Ai, X. ^{[73
,74
]}

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

Aizenberg, I. ^{[242
]}

Akbiyik, M. ^{[154
]}

Akesson, T. P. A. ^{[151
]}

Akimov, A. V. ^{[61
]}

Al Khoury, K. ^{[64
]}

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

Albert, J. ^{[238
]}

Albicocco, P. ^{[79
,80
]}

Verzini, M. J. Alconada ^{[141
,142
]}

Alderweireldt, S. ^{[78
]}

Aleksa, M. ^{[61
]}

Aleksandrov, I. N. ^{[61
]}

Alexa, C. ^{[39
]}

Alexopoulos, T. ^{[11
]}

Alfonsi, A. ^{[169
,170
]}

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, 9700 S Cass Ave, Argonne, IL 60439 USA

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

[9] Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 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 78712 USA

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

[14] Barcelona Inst Sci & Technol, 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] Nanjing Univ, Dept Phys, Nanjing, Peoples R China

[18] UCAS, Beijing, Peoples R China

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

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

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

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

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

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

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

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

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

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

[29] Istinye Univ, Istanbul, Turkiye

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

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

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

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

[34] INFN 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, Dept Phys, Cluj Napoca, Romania

[42] Univ Politehn Bucuresti, Bucharest, Romania

[43] West Univ Timisoara, Timisoara, Romania

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

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

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

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

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

[49] Calif State Univ Los Angeles, Los Angeles, CA 90032 USA

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 06期

基金：

欧盟地平线“2020”; 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;

关键词：

Exotics; Hadron-Hadron Scattering; VECTOR GAUGE BOSON; PHI-MESON DECAYS; EXCLUSION LIMITS; FORCES;

D O I：

10.1007/JHEP06(2023)153

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 light long-lived neutral particles with masses in the O(MeV-GeV) range is presented. The analysis targets the production of long-lived dark photons in the decay of a Higgs boson produced via gluon-gluon fusion or in association with a W boson. Events that contain displaced collimated Standard Model fermions reconstructed in the calorimeter or muon spectrometer are selected in 139 fb(-1) of p s = 13TeV pp collision data collected by the ATLAS detector at the LHC. Background estimates for contributions from Standard Model processes and instrumental effects are extracted from data. The observed event yields are consistent with the expected background. Exclusion limits are reported on the production cross-section times branching fraction as a function of the mean proper decay length c tau of the dark photon, or as a function of the dark-photon mass and kinetic mixing parameter that quantifies the coupling between the Standard Model and potential hidden (dark) sectors. A Higgs boson branching fraction above 1% is excluded at 95% CL for a Higgs boson decaying into two dark photons for dark-photon mean proper decay lengths between 10 mm and 250 mm and dark photons with masses between 0.4 GeV and 2 GeV.

引用

页数：55

共 50 条

[41] Search for light long-lived neutral particles produced in pp collisions at s=13TeV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sqrt{s} = 13~\mathrm {TeV}$$\end{document} and decaying into collimated leptons or light hadrons with the ATLAS detector
G. Aad
B. Abbott
D. C. Abbott
A. Abed Abud
K. Abeling
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Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Hussain, P. S.
Jeitler, M.
Krammer, N.
Li, A.
Liko, D.
Mikulec, I.
Schieck, J.
Schoefbeck, R.
Schwarz, D.
Sonawane, M.
Templ, S.
Waltenberger, W.
Wulz, C. -E.
Darwish, M. R.
Janssen, T.
Van Mechelen, P.
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D'Hondt, J.
Dansana, S.
De Moor, A.
Delcourt, M.
El Faham, H.
Lowette, S.
Makarenko, I.
Muller, D.
Sahasransu, A. R.
Tavernier, S.
Tytgat, M.
Van Putte, S.
Vannerom, D.
Clerbaux, B.
De Lentdecker, G.
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Aboulhorma, A.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Abusleme Hoffman, A. C.
Acharya, B. S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Addepalli, S. V.
Adelman, J.
Adiguzel, A.
Adorni, S.
Adye, T.
Affolder, A. A.
Afik, Y.
Agaras, M. N.
Agarwala, J.
Aggarwal, A.
Agheorghiesei, C.
Aguilar-Saavedra, J. A.
Ahmad, A.
Ahmadov, F.
Ahmed, W. S.
Ai, X.
Aielli, G.
Aizenberg, I.
Akbiyik, M.
Akesson, T. P. A.
Akimov, A. V.
Al Khoury, K.
Alberghi, G. L.
Albert, J.
Albicocco, P.
Alconada Verzini, M. J.
Alderweireldt, S.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexopoulos, T.
Alfonsi, A.
Alfonsi, F.
Alhroob, M.
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[50] Search for direct stau production in events with two hadronic τ-leptons in √s=13 TeV pp collisions with the ATLAS detector
Aad, G.
Abbott, B.
Abbott, D. C.
Abud, A. Abed
Abeling, K.
Abhayasinghe, D. K.
Abidi, S. H.
AbouZeid, O. S.
Abraham, N. L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B. S.
Achkar, B.
Adachi, S.
Adam, L.
Bourdarios, C. Adam
Adamczyk, L.
Adamek, L.
Adelman, J.
Adersberger, M.
Adiguzel, A.
Adorni, S.
Adye, T.
Affolder, A. A.
Afik, Y.
Agapopoulou, C.
Agaras, M. N.
Aggarwal, A.
Agheorghiesei, C.
Aguilar-Saavedra, J. A.
Ahmadov, F.
Ahmed, W. S.
Ai, X.
Aielli, G.
Akatsuka, S.
Akesson, T. P. A.
Akilli, E.
Akimov, A., V
Al Khoury, K.
Alberghi, G. L.
Albert, J.
Verzini, M. J. Alconada
Alderweireldt, S.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexandre, D.
Alexopoulos, T.
Alfonsi, A.
PHYSICAL REVIEW D, 2020, 101 (03)

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