Search for non-resonant Higgs boson pair production in the 2b+2l+ETmiss final state in pp collisions at √s=13 TeV with the ATLAS detector

被引：0

作者：

Aad, G. ^{[160
]}

Abbott, B. ^{[181
]}

Abeling, K. ^{[83
]}

Abicht, N. J. ^{[76
]}

Abidi, S. H. ^{[47
]}

Aboulhorma, A. ^{[60
]}

Abramowicz, H. ^{[226
]}

Abreu, H. ^{[225
]}

Abulaiti, Y. ^{[178
]}

Acharya, B. S. ^{[108
,109
,261
]}

Bourdarios, C. Adam ^{[5
]}

Adamczyk, L. ^{[139
]}

Addepalli, S., V ^{[38
]}

Addison, M. J. ^{[159
]}

Adelman, J. ^{[175
]}

Adiguzel, A. ^{[30
]}

Adye, T. ^{[200
]}

Afolder, A. A. ^{[202
]}

Afk, Y. ^{[63
]}

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

Agarwala, J. ^{[117
,118
]}

Aggarwal, A. ^{[158
]}

Agheorghiesei, C. ^{[41
]}

Ahmad, A. ^{[62
]}

Ahmadov, F. ^{[13
,62
]}

Ahmed, W. S. ^{[162
]}

Ahuja, S. ^{[152
]}

Ai, X. ^{[97
]}

Aielli, G. ^{[123
,124
]}

Aikot, A. ^{[241
]}

Tamlihat, M. Ait ^{[60
]}

Aitbenchikh, B. ^{[57
]}

Aizenberg, I ^{[247
]}

Akbiyik, M. ^{[158
]}

Akesson, T. P. A. ^{[155
]}

Akimov, A., V ^{[62
]}

Akiyama, D. ^{[246
]}

Akolkar, N. N. ^{[36
]}

Aktas, S. ^{[28
]}

Al Khoury, K. ^{[65
]}

Alberghi, G. L. ^{[35
]}

Albert, J. ^{[243
]}

Albicocco, P. ^{[80
,81
]}

Albouy, G. L. ^{[89
]}

Alderweireldt, S. ^{[79
]}

Alegria, Z. L. ^{[182
]}

Aleksa, M. ^{[62
]}

Aleksandrov, I. N. ^{[62
]}

Alexa, C. ^{[40
]}

Alexopoulos, T. ^{[11
]}

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, High Energy Phys Div, 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, Phys Dept, Athens, Greece

[11] Natl Tech Univ Athens, Phys Dept, 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, Phys Dept, Beijing, Peoples R China

[17] Nanjing Univ, Dept Phys, Nanjing, Peoples R China

[18] Sun Yat Sen Univ, Sch Sci, Shenzhen Campus, Shenzhen, Peoples R China

[19] Univ Chinese Acad Sci UCAS, Beijing, Peoples R China

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

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

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

[23] Univ Calif Berkeley, Berkeley, CA USA

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

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

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

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

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

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

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

[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, Boston, MA USA

[38] Brandeis Univ, Dept Phys, Waltham, MA 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, Phys Dept, Upton, NY USA

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

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 02期

基金：

巴西圣保罗研究基金会; 欧盟地平线“2020”; 加拿大自然科学与工程研究理事会; 瑞典研究理事会;

关键词：

Hadron-Hadron Scattering; Higgs Physics; Proton-Proton Scattering; LEADING ORDER QCD; BROKEN SYMMETRIES; STRAHLUNG; PROGRAM; FUSION; MASSES;

D O I：

10.1007/JHEP02(2024)037

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 non-resonant Higgs boson pair (HH) production is presented, in which one of the Higgs bosons decays to a b-quark pair (b (b) over bar) and the other decays to WW*, ZZ(*), or tau(+)tau(-), with in each case a final state with l(+)l(-)+ neutrinos (l = e, mu). The analysis targets separately the gluon-gluon fusion and vector boson fusion production modes. Data recorded by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb(-1), are used in this analysis. Events are selected to have exactly two b-tagged jets and two leptons with opposite electric charge and missing transverse momentum in the final state. These events are classified using multivariate analysis algorithms to separate the HH events from other Standard Model processes. No evidence of the signal is found. The observed (expected) upper limit on the cross-section for non-resonant Higgs boson pair production is determined to be 9.7 (16.2) times the Standard Model prediction at 95% confidence level. The Higgs boson self-interaction coupling parameter kappa(lambda) and the quadrilinear coupling parameter kappa(2V) are each separately constrained by this analysis to be within the ranges [-6.2, 13.3] and [-0.17, 2.4], respectively, at 95% confidence level, when all other parameters are fixed.

引用

页数：48

共 50 条

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