Study of Υ(10753) decays to π π−Υ(nS) final states at Belle II

I Adachi; L Aggarwal; H Ahmed; H Aihara; N Akopov; A Aloisio; N Anh Ky; DM Asner; H Atmacan; T Aushev; V Aushev; M Aversano; V Babu; H Bae; S Bahinipati; P Bambade; S Banerjee; S Bansal; M Barrett; J Baudot; A Baur; A Beaubien; F Becherer; J Becker; JV Bennett; FU Bernlochner; V Bertacchi; M Bertemes; E Bertholet; M Bessner; S Bettarini; B Bhuyan; F Bianchi; T Bilka; D Biswas; A Bobrov; D Bodrov; A Bolz; A Bondar; A Bozek; M Bračko; P Branchini; TE Browder; A Budano; S Bussino; M Campajola; L Cao; G Casarosa; C Cecchi; J Cerasoli; MC Chang; P Chang; P Cheema; BG Cheon; K Chilikin; K Chirapatpimol; HE Cho; K Cho; SJ Cho; SK Choi; S Choudhury; L Corona; S Das; F Dattola; E De La Cruz-Burelo; SA De La Motte; G De Nardo; M De Nuccio; G De Pietro; R de Sangro; M Destefanis; R Dhamija; A Di Canto; F Di Capua; J Dingfelder; Z Doležal; TV Dong; M Dorigo; K Dort; S Dreyer; S Dubey; G Dujany; P Ecker; M Eliachevitch; P Feichtinger; T Ferber; D Ferlewicz; T Fillinger; C Finck; G Finocchiaro; A Fodor; F Forti; A Frey; BG Fulsom; A Gabrielli; E Ganiev; M Garcia-Hernandez; R Garg; G Gaudino; V Gaur

Journal article

Study of Υ(10753) decays to π π−Υ(nS) final states at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot Show all

Journal of High Energy Physics | SPRINGER | Published : 2024

DOI: 10.1007/JHEP07(2024)116

Abstract

We present an analysis of the process e+e− → π+π−Υ(nS) (where n = 1, 2, or 3) reconstructed in 19.6 fb−1 of Belle II data during a special run of the SuperKEKB collider at four energy points near the peak of the Υ(10753) resonance. By analyzing the mass distribution of the π+π−Υ(nS) system and the Born cross sections of the e+e− → π+π−Υ(nS) process, we report the first observation of Υ(10753) decays to the π+π−Υ(1S) and π+π−Υ(2S) final states, and find no evidence for decays to π+π−Υ(3S). Possible intermediate states in the π+π−Υ(1S, 2S) transitions are also investigated, and no evidence for decays proceeding via the π∓Zb± or f0(980)Υ(nS) intermediate states is found. We measure Born cross s..

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University of Melbourne Researchers

Martin Sevior Author

Phillip Urquijo Author

Daniel Marcantonio Author

Related Projects (2)

LE23 non-lead LIEF- Taylor- LE230100085

Light new particles at electron-positron colliders

Grants

Awarded by Narodowe Centrum Nauki

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 Higher Education and Science Committee of the Republic of Armenia Grant No. 23LCG-1C011 Australian Research Council and Research Grants No. DP200101792, No. DP210101900, No. DP210102831, No. DE220100462, No. LE210100098, and No. LE230100085; 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; National Key R&D Program of China under Contract No. 2022YFA1601903, National Natural Science Foundation of China and Research Grants No. 11575017, No. 11761141009, No. 11705209, No. 11975076, No. 12135005, No. 12150004, No. 12161141008, and No. 12175041, and Shandong Provincial Natural Science Foundation Project ZR2022JQ02; the Czech Science Foundation Grant No. 22-18469S; 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 Agreement 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 Nucleaire et de Physique des Particules (IN2P3) du CNRS and L'Agence Nationale de la Recherche (ANR) under grant ANR-21-CE31-0009 (France); BMBF, DFG, HGF, MPG, and AvH Foundation (Germany); Department of Atomic Energy under Project Identification No. RTI 4002, Department of Science and Technology, and UPES SEED funding programs No. UPES/R&D-SEED-INFRA/17052023/01 and No. UPES/R&D-SOE/20062022/06 (India); Israel Science Foundation Grant No. 2476/17, U.S.-Israel Binational Science Foundation Grant No. 2016113, and Israel Ministry of Science Grant No. 3-16543; Istituto Nazionale di Fisica Nucleare and the Research Grants BELLE2; Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research Grants No. 16H03968, No. 16H03993, No. 16H06492, No. 16K05323, No. 17H01133, No. 17H05405, No. 18K03621, No. 18H03710, No. 18H05226, No. 19H00682, No. 22H00144, No. 22K14056, No. 22K21347, No. 23H05433, No. 26220706, and No. 26400255, the National Institute of Informatics, and Science Information NETwork 5 (SINET5), and the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B-02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2019R1I1A3A01058933, No. 2021R1A6A1A03043957, No. 2021R1F1A1060423, No. 2021R1F1A1064008, No. 2022R1-A2C1003993, and No. RS-2022-00197659, 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, and SEP-CINVESTAV Research Grant No. 237 (Mexico); the Polish Ministry of Science and Higher Education and the National 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; National Science and Technology Council, and Ministry of Education (Taiwan); Thailand Center of Excellence in Physics; TUBITAK ULAKBIM (Turkey); National Research Foundation of Ukraine, Project No. 2020.02/0257, and Ministry of Education and Science of Ukraine; the U.S. National Science Foundation and Research Grants No. PHY-1913789 and No. PHY-2111604, and 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, No. DE-SC0022350, No. DE-SC0023470; and the Vietnam Academy of Science and Technology (VAST) under Grant No. DL0000.05/21-23.We thank the SuperKEKB team for the excellent operation of the accelerator and their special efforts to accomplish the center-of-mass energy scan that made these results possible; the KEK cryogenics group for the efficient operation of the detector solenoid magnet; the KEK computer group and the NII for on-site computing support and SINET6 network support; and the raw-data centers at BNL, DESY, GridKa, IN2P3, INFN, and the University of Victoria for off-site computing support. E. Won is partially supported by the NRF grant 2022R1A2B5B02001535 and J. H. Yin and E. Won are by 2019H1D3A1A01101787.