Search for dark matter produced in association with a Standard Model Higgs boson decaying into b-quarks using the full Run 2 dataset from the ATLAS detector

被引:28
作者
Aad, G. [158 ]
Abbott, B. [188 ]
Abbott, D. C. [159 ]
Abud, A. Abed [61 ]
Abeling, K. [82 ]
Abhayasinghe, D. K. [149 ]
Abidi, S. H. [47 ]
AbouZeid, O. S. [65 ]
Abramowicz, H. [231 ]
Abreu, H. [230 ]
Abulaiti, Y. [7 ]
Abusleme Hoffman, A. C. [212 ]
Acharya, B. S. [105 ,106 ,268 ]
Achkar, B. [82 ]
Adam, L. [156 ]
Bourdarios, C. Adam [6 ]
Adamczyk, L. [135 ]
Adamek, L. [237 ]
Adelman, J. [179 ]
Adiguzel, A. [15 ,281 ]
Adorni, S. [83 ]
Adye, T. [209 ]
Affolder, A. A. [211 ]
Afik, Y. [230 ]
Agapopoulou, C. [103 ]
Agaras, M. N. [18 ]
Agarwala, J. [114 ,115 ]
Aggarwal, A. [176 ]
Agheorghiesei, C. [41 ]
Aguilar-Saavedra, J. A. [199 ,204 ,280 ]
Ahmad, A. [61 ]
Ahmadov, F. [129 ]
Ahmed, W. S. [160 ]
Ai, X. [73 ,74 ]
Aielli, G. [120 ,121 ]
Akatsuka, S. [138 ]
Akbiyik, M. [156 ]
Akesson, T. P. A. [152 ]
Akimov, A., V [167 ]
Al Khoury, K. [64 ]
Alberghi, G. L. [34 ,35 ]
Albert, J. [248 ]
Alconada Verzini, M. J. [142 ,143 ]
Alderweireldt, S. [61 ]
Aleksa, M. [61 ]
Aleksandrov, I. N. [129 ]
Alexa, C. [40 ]
Alexopoulos, T. [11 ]
Alfonsi, A. [177 ,178 ]
Alfonsi, F. [34 ,35 ]
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] Istanbul Aydin Univ, Applicat & Res Ctr Adv Studies, Istanbul, Turkey
[5] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[6] Univ Savoie Mt Blanc, LAPP, CNRS IN2P3, Annecy, France
[7] Argonne Natl Lab, High Energy Phys Div, 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, Phys Dept, Athens, Greece
[11] Natl Tech Univ Athens, Phys Dept, Zografos, Greece
[12] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[13] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[14] Istanbul Bilgi Univ, Fac Engn & Nat Sci, Istanbul, Turkey
[15] Bogazici Univ, Dept Phys, Istanbul, Turkey
[16] Gaziantep Univ, Dept Phys Engn, Gaziantep, Turkey
[17] Istanbul Univ, Dept Phys, Istanbul, Turkey
[18] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Barcelona, Spain
[19] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[20] Tsinghua Univ, Phys Dept, Beijing, Peoples R China
[21] Nanjing Univ, Dept Phys, Nanjing, Peoples R China
[22] Univ Chinese Acad Sci UCAS, Beijing, Peoples R China
[23] Univ Belgrade, Inst Phys, Belgrade, Serbia
[24] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[25] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA USA
[26] Univ Calif Berkeley, Berkeley, CA 94720 USA
[27] Humboldt Univ, Inst Phys, Berlin, Germany
[28] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[29] Univ Bern, Lab High Energy Phys, Bern, Switzerland
[30] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[31] Univ Antonio Narino, Fac Ciencias, Bogota, Colombia
[32] Univ Antonio Narino, Ctr Invest, Bogota, Colombia
[33] Univ Nacl Colombia, Dept Fis, Bogota, Colombia
[34] Univ Bologna, Dipartimento Fis & Astron A Righi, Bologna, Italy
[35] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy
[36] Univ Bonn, Phys Inst, Bonn, Germany
[37] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA
[38] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[39] Transilvania Univ Brasov, Brasov, Romania
[40] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[41] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania
[42] Natl Inst Res & Dev Isotop & Mol Technol, Phys Dept, Cluj Napoca, Romania
[43] Univ Politehn Bucuresti, Bucharest, Romania
[44] West Univ Timisoara, Timisoara, Romania
[45] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[46] Slovak Acad Sci, Dept Subnucl Phys, Inst Expt Phys, Kosice, Slovakia
[47] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[48] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[49] Univ Buenos Aires, IFIBA, Buenos Aires, DF, Argentina
[50] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
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; 英国科学技术设施理事会;
关键词
Dark matter; Hadron-Hadron scattering (experiments); PAIR PRODUCTION; PLUS PLUS;
D O I
10.1007/JHEP11(2021)209
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
The production of dark matter in association with Higgs bosons is predicted in several extensions of the Standard Model. An exploration of such scenarios is presented, considering final states with missing transverse momentum and b-tagged jets consistent with a Higgs boson. The analysis uses proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the ATLAS experiment at the LHC during Run 2, amounting to an integrated luminosity of 139 fb(-1). The analysis, when compared with previous searches, benefits from a larger dataset, but also has further improvements providing sensitivity to a wider spectrum of signal scenarios. These improvements include both an optimised event selection and advances in the object identification, such as the use of the likelihood-based significance of the missing transverse momentum and variable-radius track-jets. No significant deviation from Standard Model expectations is observed. Limits are set, at 95% confidence level, in two benchmark models with two Higgs doublets extended by either a heavy vector boson Z' or a pseudoscalar singlet a and which both provide a dark matter candidate chi. In the case of the two-Higgs-doublet model with an additional vector boson Z ', the observed limits extend up to a Z' mass of 3 TeV for a mass of 100 GeV for the dark matter candidate. The two-Higgs-doublet model with a dark matter particle mass of 10 GeV and an additional pseudoscalar a is excluded for masses of the a up to 520 GeV and 240 GeV for tan beta = 1 and tan beta = 10 respectively. Limits on the visible cross-sections are set and range from to 0.05 fb to 3.26 fb, depending on the missing transverse momentum and b-quark jet multiplicity requirements.
引用
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页数:50
相关论文
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