Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb-1 of proton-proton collision data at √s=13 Te V

被引：73

作者：

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

Aad, G. ^{[154
]}

Abbott, B. ^{[184
]}

Abbott, D. C. ^{[155
]}

Abdinov, O. ^{[18
]}

Abeloos, B. ^{[188
]}

Abhayasinghe, D. K. ^{[145
]}

Abidi, S. H. ^{[232
]}

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

Abraham, N. L. ^{[219
]}

Abramowicz, H. ^{[225
]}

Abreu, H. ^{[224
]}

Abulaiti, Y. ^{[8
]}

Acharya, B. S. ^{[100
,101
,252
]}

Adachi, S. ^{[227
,228
]}

Adam, L. ^{[152
]}

Adamczyk, L. ^{[131
]}

Adamek, L. ^{[232
]}

Adelman, J. ^{[176
]}

Adersberger, M. ^{[167
]}

Adiguzel, A. ^{[16
,192
,253
]}

Adye, T. ^{[205
]}

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

Afik, Y. ^{[224
]}

Agheorghiesei, C. ^{[40
]}

Aguilar-Saavedra, J. A. ^{[196
,201
,254
]}

Ahmadov, F. ^{[124
,255
]}

Aielli, G. ^{[115
,116
]}

Akatsuka, S. ^{[134
]}

Akesson, T. P. A. ^{[148
]}

Akilli, E. ^{[78
]}

Akimov, A. V. ^{[163
]}

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

Albert, J. ^{[243
]}

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

Alconada Verzini, M. J. ^{[138
,139
]}

Alderweireldt, S. ^{[173
]}

Aleksa, M. ^{[57
]}

Aleksandrov, I. N. ^{[124
]}

Alexa, C. ^{[39
]}

Alexandre, D. ^{[28
]}

Alexopoulos, T. ^{[12
]}

Alhroob, M. ^{[184
]}

Ali, B. ^{[203
]}

Alimonti, G. ^{[105
]}

Alison, J. ^{[58
]}

Alkire, S. P. ^{[210
]}

Allaire, C. ^{[188
]}

Allbrooke, B. M. M. ^{[219
]}

Allen, B. W. ^{[187
]}

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 Savoie Mt Blanc, Univ Grenoble Alpes, LAPP, CNRS,IN2P3, 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, Dept Phys, Athens, Greece

[12] Natl Tech Univ Athens, Dept Phys, 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 Engn Phys, Gaziantep, Turkey

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

[19] Barcelona Inst Sci & Technol, IFAE, Barcelona, Spain

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

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

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

[23] UCAS, Beijing, Peoples R China

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

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

[26] Lawrence Berkeley Natl Lab, Div Phys, 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, High Energy Phys Lab, 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] 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] 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：

PHYSICAL REVIEW D | 2019年 / 99卷 / 09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：

DYNAMICAL SUPERSYMMETRY BREAKING; PARTON DISTRIBUTIONS; GLUINO PRODUCTION; EXTENSION; SQUARK; DECAY;

D O I：

10.1103/PhysRevD.99.092007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb(-1) of protonproton collisions at root s = 13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000, 1250, 1340, 430, and 1090 GeV, respectively.

引用

页数：34

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