Search for pair-produced higgsinos decaying via Higgs or Z bosons to final states containing a pair of photons and a pair of b-jets with the ATLAS detector

被引：0

作者：

Aad, G. ^{[158
]}

Abbott, B. ^{[178
]}

Abeling, K. ^{[81
]}

Abicht, N. J. ^{[74
]}

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

Aboulhorma, A. ^{[59
,225
,226
]}

Abramowicz, H. ^{[223
]}

Abreu, H. ^{[222
]}

Abulaiti, Y. ^{[175
]}

Hoffman, A. C. Abusleme ^{[201
]}

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

Bourdarios, C. Adam ^{[5
]}

Adamczyk, L. ^{[136
]}

Adamek, L. ^{[228
]}

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

Addison, M. J. ^{[157
]}

Adelman, J. ^{[173
]}

Adiguzel, A. ^{[29
]}

Adye, T. ^{[198
]}

Affolder, A. A. ^{[200
]}

Afik, Y. ^{[60
]}

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

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

Aggarwal, A. ^{[156
]}

Agheorghiesei, C.

Ahmad, A. ^{[60
]}

Ahmadov, F. ^{[60
,271
]}

Ahmed, W. S. ^{[160
]}

Ahuja, S. ^{[150
]}

Ai, X. ^{[89
,90
]}

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

Tamlihat, M. Ait ^{[59
]}

Aitbenchikh, B. ^{[56
]}

Aizenberg, I. ^{[244
]}

Akbiyik, M. ^{[156
]}

Akesson, T. P. A. ^{[153
]}

Akimov, A. V. ^{[60
]}

Akiyama, D. ^{[243
]}

Akolkar, N. N. ^{[35
]}

Al Khoury, K. ^{[63
]}

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

Albert, J. ^{[240
]}

Albicocco, P. ^{[78
,79
]}

Albouy, G. L. ^{[87
]}

Alderweireldt, S. ^{[77
]}

Aleksa, M. ^{[60
]}

Aleksandrov, I. N. ^{[60
]}

Alexa, C. ^{[39
,40
]}

Alexopoulos, T. ^{[11
]}

Alfonsi, A. ^{[171
,172
]}

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, CNRS, LAPP, IN2P3, Annecy, France

[6] Univ Paris Cite, APC, CNRS, IN2P3, Paris, 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] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan

[14] Barcelona Inst Sci & Technol, Inst Fis Altes Energies, 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 94720 USA

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

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

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

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

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

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

[29] Istanbul Univ, Dept Phys, 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, Phys Dept, Cluj Napoca, Romania

[42] Natl Univ Sci & Technol Politech, 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, Phys Dept, 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 Fresno, Fresno, CA 93740 USA

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

来源：

PHYSICS LETTERS B | 2024年 / 856卷

基金：

中国国家自然科学基金; 瑞典研究理事会; 日本学术振兴会; 欧盟地平线“2020”; 瑞士国家科学基金会; 欧洲研究理事会; 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;

关键词：

SUPERSYMMETRY; STRAHLUNG; BREAKING; PROGRAM; SQUARK; MODEL; WEAK;

D O I：

10.1016/j.physletb.2024.138938

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search is presented for the pair production of higgsinos (chi) over tilde in gauge-mediated supersymmetry models, where the lightest neutralinos (chi) over tilde (0)(1) decay into a light gravitino (G) over tilde in association with either a Higgs h or a Z boson. The search is performed with the ATLAS detector at the Large Hadron Collider using 139 fb(-1) of proton-proton collisions at a centre-of-mass energy of root s = 13 TeV. It targets final states in which a Higgs boson decays into a photon pair, while the other Higgs or Z boson decays into a b (b) over bar pair, with missing transverse momentum associated with the two gravitinos. Search regions dependent on the amount of missing transverse momentum are defined by the requirements that the diphoton mass should be consistent with the mass of the Higgs boson, and the b (b) over bar mass with the mass of the Higgs or Z boson. The main backgrounds are estimated with data-driven methods using the sidebands of the diphoton mass distribution. No excesses beyond Standard Model expectations are observed and higgsinos with masses up to 320 GeV are excluded, assuming a branching fraction of 100% for (chi) over tilde (0)(1) -> h (G) over tilde. This analysis excludes higgsinos with masses of 130 GeV for branching fractions to h (G) over tilde as low as 36%, thus providing complementarity to previous ATLAS searches in final states with multiple leptons or multiple b-jets, targeting different decays of the electroweak bosons.

引用

页数：24

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