Observation of a vector charmoniumlike state in e( )e(-) -> D-s( ) D-s1 (2536)(-) c.c.

S Jia; CP Shen; CZ Yuan; XL Wang; I Adachi; H Aihara; DM Asner; H Atmacan; V Aulchenko; R Ayad; V Babu; I Badhrees; AM Bakich; P Behera; B Bhuyan; T Bilka; J Biswal; A Bobrov; G Bonvicini; A Bozek; M Bracko; TE Browder; M Campajola; L Cao; D Cervenkov; P Chang; A Chen; BG Cheon; K Chilikin; HE Cho; K Cho; S-K Choi; Y Choi; D Cinabro; S Cunliffe; G De Nardo; F Di Capua; S Di Carlo; Z Dolezal; T Dong; S Eidelman; D Epifanov; JE Fast; T Ferber; BG Fulsom; R Garg; V Gaur; N Gabyshev; A Garmash; A Giri; P Goldenzweig; B Golob; K Hayasaka; H Hayashii; W-S Hou; C-L Hsu; T Iijima; K Inami; G Inguglia; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; WW Jacobs; Y Jin; KK Joo; KH Kang; G Karyan; H Kichimi; BH Kim; CH Kim; DY Kim; SH Kim; K Kinoshita; P Kodys; S Korpar; R Kroeger; P Krokovny; R Kulasiri; A Kuzmin; Y-J Kwon; K Lalwani; JS Lange; IS Lee; SC Lee; P Lewis; CH Li; LK Li; YB Li; L Li Gioi; J Libby; K Lieret; D Liventsev; C MacQueen; M Masuda; T Matsuda; D Matvienko; M Merola; K Miyabayashi; H Miyata; R Mizuk; R Mussa; KJ Nath; M Nayak; M Niiyama; NK Nisar; S Nishida; K Nishimura; S Ogawa; H Ono; Y Onuki; P Oskin; P Pakhlov; G Pakhlova; T Pang; S Pardi; H Park; S-H Park; S Patra; S Paul; TK Pedlar; R Pestotnik; LE Piilonen; V Popov; E Prencipe; MT Prim; M Roehrken; A Rostomyan; N Rout; G Russo; D Sahoo; Y Sakai; S Sandilya; L Santelj; V Savinov; O Schneider; G Schnell; C Schwanda; Y Seino; K Senyo; ME Sevior; J-G Shiu; B Shwartz; A Sokolov; E Solovieva; S Stanic; M Staric; ZS Stottler; T Sumiyoshi; W Sutcliffe; M Takizawa; K Tanida; F Tenchini; K Trabelsi; M Uchida; T Uglov; Y Unno; S Uno; Y Usov; R Van Tonder; G Varner; A Vinokurova; V Vorobyev; CH Wang; M-Z Wang; M Watanabe; E Won; SB Yang; H Ye; JH Yin; ZP Zhang; V Zhilich; V Zhukova; V Zhulanov

Journal article

Observation of a vector charmoniumlike state in e( )e(-) -> D-s( ) D-s1 (2536)(-) c.c.

S Jia, CP Shen, CZ Yuan, XL Wang, I Adachi, H Aihara, DM Asner, H Atmacan, V Aulchenko, R Ayad, V Babu, I Badhrees, AM Bakich, P Behera, B Bhuyan, T Bilka, J Biswal, A Bobrov, G Bonvicini, A Bozek Show all

PHYSICAL REVIEW D | AMER PHYSICAL SOC | Published : 2019

DOI: 10.1103/PhysRevD.100.111103

Abstract

Using a data sample of 921.9 fb-1 collected with the Belle detector, we study the process of e+e-→Ds+Ds1(2536)-+c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to Ds+Ds1(2536)-+c.c. with a significance of 5.9σ, including systematic uncertainties. The measured mass and width are (4625.9-6.0+6.2(stat)±0.4(syst)) MeV/c2 and (49.8-11.5+13.9(stat)±4.0(syst)) MeV, respectively. The product of the e+e-→Ds+Ds1(2536)-+c.c. cross section and the branching fraction of Ds1(2536)-→D∗0K-is measured from the DsDs1(2536) threshold to 5.59 GeV.

University of Melbourne Researchers

Martin Sevior Author Physics

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Grants

Awarded by Australian Research Council

Awarded by National Natural Science Foundation of China

Awarded by Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)

Awarded by Shanghai Pujiang Program

Awarded by Ministry of Education, Youth and Sports of the Czech Republic

Awarded by National Research Foundation (NRF) of Korea

Awarded by Ministry of Science and Higher Education of the Russian Federation

Funding Acknowledgements

We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, and the Pacific Northwest National Laboratory (PNNL) Environmental Molecular Sciences Laboratory (EMSL) computing group for strong computing support; and the National Institute of Informatics, and Science Information NETwork 5 (SINET5) for valuable network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council including Grants No. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, and No. FT130100303; Austrian Science Fund (FWF); the National Natural Science Foundation of China under Contracts No. 11435013, No. 11475187, No. 11521505, No. 11575017, No. 11675166, No. 11705209, No. 11761141009, No. 11975076; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS), Grant No. QYZDJ-SSW-SLH011; the CAS Center for Excellence in Particle Physics (CCEPP); the Shanghai Pujiang Program under Grant No. 18PJ1401000; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1-D1A1B-01010135, No. 2016R1-D1A1B-02012900, No. 2018R1-A2B-3003643, No. 2018R1-A6A1A-06024970, No. 2018R1-D1A1B-07047294, No. 2019K1-A3A7A-09033840, and No. 2019R1-I1A3A-01058933; 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; 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 14.W03.31.0026; from 15.02.2018; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the United States Department of Energy and the National Science Foundation.