Search for a Dark Photon and an Invisible Dark Higgs Boson in μ μ- and Missing Energy Final States with the Belle II Experiment

F Abudinén; I Adachi; L Aggarwal; H Aihara; N Akopov; A Aloisio; N Anh Ky; DM Asner; H Atmacan; T Aushev; V Aushev; V Babu; S Bahinipati; P Bambade; S Banerjee; S Bansal; J Baudot; A Baur; A Beaubien; J Becker; PK Behera; JV Bennett; E Bernieri; FU Bernlochner; M Bertemes; E Bertholet; M Bessner; B Bhuyan; F Bianchi; T Bilka; D Biswas; A Bobrov; D Bodrov; A Bolz; A Bozek; M Bračko; P Branchini; TE Browder; A Budano; S Bussino; M Campajola; G Casarosa; C Cecchi; V Chekelian; C Chen; YQ Chen; BG Cheon; K Chilikin; K Chirapatpimol; HE Cho; K Cho; SJ Cho; SK Choi; S Choudhury; D Cinabro; L Corona; S Cunliffe; F Dattola; G De Marino; G De Nardo; M De Nuccio; G De Pietro; R De Sangro; M Destefanis; S Dey; A De Yta-Hernandez; R Dhamija; A Di Canto; F Di Capua; J Dingfelder; Z DoleŽal; I Domínguez Jiménez; TV Dong; M Dorigo; K Dort; D Dossett; S Dreyer; S Dubey; G Dujany; M Eliachevitch; D Epifanov; P Feichtinger; T Ferber; D Ferlewicz; T Fillinger; C Finck; G Finocchiaro; K Flood; A Fodor; F Forti; A Frey; BG Fulsom; E Ganiev; M Garcia-Hernandez; V Gaur; A Gaz; A Gellrich; R Giordano; A Giri; B Gobbo

Journal article

Search for a Dark Photon and an Invisible Dark Higgs Boson in μ μ- and Missing Energy Final States with the Belle II Experiment

F Abudinén, I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, V Babu, S Bahinipati, P Bambade, S Banerjee, S Bansal, J Baudot, A Baur, A Beaubien, J Becker Show all

Physical Review Letters | Published : 2023

DOI: 10.1103/PhysRevLett.130.071804

Abstract

The dark photon A′ and the dark Higgs boson h′ are hypothetical particles predicted in many dark sector models. We search for the simultaneous production of A′ and h′ in the dark Higgsstrahlung process e+e-→A′h′ with A′→μ+μ- and h′ invisible in electron-positron collisions at a center-of-mass energy of 10.58 GeV in data collected by the Belle II experiment in 2019. With an integrated luminosity of 8.34 fb-1, we observe no evidence for signal. We obtain exclusion limits at 90% Bayesian credibility in the range of 1.7-5.0 fb on the cross section and in the range of 1.7×10-8-200×10-8 on the effective coupling µ2×αD for the A′ mass in the range of 4.0 GeV/c2View full abstract

University of Melbourne Researchers

Martin Sevior Author

Eiasha Waheed Author

Phillip Urquijo Author

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Funding Acknowledgements

This work, based on data collected using the Belle II detector, which was built and commissioned prior to March 2019, was supported by Science Committee of the Republic of Armenia Grant No. 20TTCG-1C010; Australian Research Council and Research Grants No. DE220100462, No. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, No. FT130100303, No. FT130100018, and No. FT120100745; Austrian Federal Ministry of Education, Science and Research, Austrian Science Fund No. P 31361-N36 and No. J4625-N, and Horizon 2020 ERC Starting Grant No. 947006 ?InterLeptons?; Natural Sciences and Engineering Research Council of Canada, Compute Canada, and CANARIE; Chinese Academy of Sciences and research Grant No. QYZDJ-SSW-SLH011;National Natural Science Foundation of China and Research Grants No. 11521505, No. 11575017, No. 11675166, No. 11761141009, No. 11705209, and No. 11975076; LiaoNing Revitalization Talents Program under Contract No. XLYC1807135; Shanghai Municipal Science and Technology Committee under Contract No. 19ZR1403000; Shanghai Pujiang Program under Grant No. 18PJ1401000; the CAS Center for Excellence in Particle Physics (CCEPP) ; the Ministry of Education, Youth, and Sports of the Czech Republic under Contract No. LTT17020, Charles University Grant No. SVV 260448, and Czech Science Foundation Grant No. 22-18469S; the European Research Council Seventh Framework PIEF-GA-2013-622527, Horizon 2020 ERC-Advanced Grants No. 267104 and No. 884719, Horizon 2020 ERC-Consolidator Grant No. 819127, Horizon 2020 Marie Sklodowska-Curie Grant Agreements No. 700525 ?NIOBE? and No. 101026516, and Horizon 2020 Marie Sklodowska-Curie RISE project JENNIFER2 Grant Agreement No. 822070 (European grants) ; L?Institut National de Physique Nucl?aire et de Physique des Particules (IN2P3) du CNRS (France) ; BMBF, DFG, HGF, MPG, and AvH Foundation (Germany) ; Department of Atomic Energy under Project Identification No. RTI 4002 and the Department of Science and Technology (India) ; the Israel Science Foundation Grant No. 2476/17, the U.S.-Israel Binational Science Foundation Grant No. 2016113 and the Israel Ministry of Science Grant No. 3-16543; Istituto Nazionale di Fisica Nucleare and Research Grants BELLE2; the Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research Grants No. 26400255; the National Institute of Informatics and Science Information NETwork 5 (SINET5) ; the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2018R1D1A1B07047294, No. 2019K1A3A7A09033840, No. 2019R1I1A3A01058933, No. 2021R1A4A2001897 and No. 2022R1A2C1003993; the Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting Project; the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information and KREONET/GLORIAD; Universiti Malaya RU Grant; Akademi Sains Malaysia and Ministry of Education Malaysia; Frontiers of Science Program Contracts No. FOINS-296, No. CB-221329, No. CB-236394, No. CB-254409, and No. CB-180023; SEP-CINVESTAV Research Grant No. 237 (Mexico) ; the Polish Ministry of Science and Higher Education and theNational Science Center; the Ministry of Science and Higher Education of the Russian Federation Agreement No. 14.W03.31.0026, and the HSE University Basic Research Program, Moscow; University of Tabuk Research Grants No. S-0256-1438 and No. S-0280-1439 (Saudi Arabia) ; Slovenian Research Agency and Research Grants No. J1-9124 and No. P1-0135; Agencia Estatal de Investigacion Spain Grant No. RYC2020-029875-I and Generalitat Valenciana Spain Grant No. CIDEGENT/2018/020; Ministry of Science and Technology and Research Grants No. MOST106-2112-M-002-005-MY3 and No. MOST107-2119-M-002-035-MY3; and the Ministry of Education (Taiwan) ; Thailand Center of Excellence in Physics; TUBITAK ULAKBIM (Turkey) ; National Research Foundation of Ukraine Project No. 2020.02/0257; Ministry of Education and Science of Ukraine; the U.S. National Science Foundation and Research Grants No. PHY-1913789 and No. PHY-2111604; the U.S. Department of Energy and Research Awards No. DE-AC06-76RLO1830, No. DE-SC0007983, No. DE-SC0009824, No. DE-SC0009973, No. DE-SC0010007, No. DE-SC0010073, No. DE-SC0010118, No. DE-SC0010504, No. DE-SC0011784, No. DE-SC0012704, No. DE-SC0019230, No. DE-SC0021274, and No. DE-SC0022350; and the Vietnam Academy of Science and Technology (VAST) under Grant No. DL0000.05/21-23. These acknowledgments are not to be interpreted as an endorsement of any statement made by any of our insti-tutes, funding agencies, governments, or their representa-tives. We thank the SuperKEKB team for delivering high-luminosity collisions; the KEK cryogenics group for the efficient operation of the detector solenoid magnet; the KEK computer group and the NII for onsite computing support and SINET6 network support; and the raw-data centers at BNL, DESY, GridKa, IN2P3, INFN, and the University of Victoria for offsite computing support.