Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the llbb final state in pp collisions at √s=13 TeV with the ATLAS detector

被引:72
|
作者
Aaboud, M. [56 ,57 ]
Aad, G. [152 ,153 ]
Abbott, B. [181 ]
Abdinov, O. [18 ]
Abeloos, B. [185 ]
Abidi, S. H. [234 ]
AbouZeid, O. S. [210 ]
Abraham, N. L. [221 ]
Abramowicz, H. [227 ]
Abreu, H. [226 ]
Abulaiti, Y. [8 ]
Acharya, B. S. [103 ,104 ,266 ]
Adachi, S. [229 ,230 ]
Adamczyk, L. [66 ]
Adelman, J. [175 ]
Adersberger, M. [166 ]
Adye, T. [204 ]
Affolder, A. A. [210 ]
Afik, Y. [226 ]
Agheorghiesei, C. [40 ]
Aguilar-Saavedraf, J. A. [192 ,197 ]
Ahmadov, F. [289 ]
Aielli, G. [118 ,119 ]
Akatsuka, S. [130 ]
Akesson, T. P. A. [147 ]
Akilli, E. [82 ]
Akimov, A. V. [162 ]
Alberghi, G. L. [33 ,34 ]
Albert, J. [246 ]
Albicocco, P. [79 ]
Alconada Verzini, M. J. [134 ,135 ]
Alderweireldt, S. [172 ]
Aleksa, M. [59 ]
Aleksandrov, I. N. [127 ]
Alexa, C. [39 ]
Alexander, G. [227 ]
Alexopoulos, T. [12 ]
Alhroob, M. [181 ]
Ali, B. [201 ]
Aliev, M. [106 ,107 ]
Alimonti, G. [108 ]
Alison, J. [60 ]
Alkire, S. P. [213 ]
Allaire, C. [185 ]
Allbrooke, B. M. M. [221 ]
Allen, B. W. [184 ]
Allport, P. P. [31 ]
Aloisio, A. [73 ,105 ,111 ,118 ,161 ,183 ,184 ,216 ,218 ,245 ,253 ]
Alonso, A. [73 ,143 ,216 ,218 ]
Alonso, F. [134 ,135 ]
机构
[1] Univ Adelaide, Dept Phys, Adelaide, SA, Australia
[2] SUNY Albany, Phys Dept, Albany, NY 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, CNRS, LAPP,IN2P3, Annecy, France
[8] Argonne Natl Lab, High Energy Phys Div, 9700 S Cass Ave, 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, Phys Dept, Zografos, Greece
[12] Natl Tech Univ Athens, Phys Dept, Zografos, Greece
[13] Univ Texas Austin, Dept Phys, Austin, TX 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 Phys Engn, 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] Nanjing Univ, Dept Phys, Nanjing, Jiangsu, Peoples R China
[22] Tsinghua Univ, Dept Phys, Beijing, 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, Phys Div, Berkeley, CA USA
[27] Univ Calif Berkeley, Berkeley, CA 94720 USA
[28] Humboldt Univ, Dept Phys, Berlin, Germany
[29] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[30] Univ Bern, Albert Einstein Ctr Fundamental Phys, 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, 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, Magurele, Romania
[40] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania
[41] Natl Inst Res & Dev Isotop & Mol Technol, Phys Dept, 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, Dept Subnucl Phys, Inst Expt Phys, Kosice, Slovakia
[46] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA
[47] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[48] Univ Cambridge, Cavendish Lab, Cambridge, England
[49] Univ Cape Town, Dept Phys, Cape Town, South Africa
[50] Univ Johannesburg, Dept Mech Engn Sci, Johannesburg, South Africa
基金
欧盟地平线“2020”; 美国国家科学基金会; 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;
关键词
PARTON DISTRIBUTIONS; HADRON COLLIDERS;
D O I
10.1016/j.physletb.2018.07.006
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb(-1) from proton-proton collisions at root s = 13 TeV recorded in 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The search considers the Z boson decaying to electrons or muons and the H boson into a pair of b-quarks. No evidence for the production of an A boson is found. Considering each production process separately, the 95% confidence-level upper limits on the pp -> A -> ZH production cross-section times the branching ratio H -> bb are in the range of 14-830 fb for the gluon-gluon fusion process and 26-570 fb for the b-associated process for the mass ranges 130-700 GeV of the H boson and 230-800 GeV of the A boson. The results are interpreted in the context of two-Higgs-doublet models. (C) 2018 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).
引用
收藏
页码:392 / 414
页数:23
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