Improved measurement of Born cross sections for χbJ ω and χbJ (π π−π0)non−ω (J = 0, 1, 2) at Belle and Belle II

I Adachi; L Aggarwal; H Ahmed; H Aihara; N Akopov; M Alhakami; A Aloisio; N Althubiti; M Angelsmark; N Anh Ky; DM Asner; H Atmacan; V Aushev; M Aversano; R Ayad; V Babu; H Bae; NK Baghel; S Bahinipati; P Bambade; S Banerjee; M Barrett; M Bartl; 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; D Biswas; A Bobrov; D Bodrov; A Bolz; A Bondar; A Boschetti; A Bozek; M Bračko; P Branchini; RA Briere; TE Browder; A Budano; S Bussino; Q Campagna; M Campajola; G Casarosa; C Cecchi; J Cerasoli; MC Chang; P Chang; R Cheaib; P Cheema; BG Cheon; K Chilikin; J Chin; K Chirapatpimol; HE Cho; K Cho; SJ Cho; SK Choi; S Choudhury; J Cochran; I Consigny; L Corona; JX Cui; E De La Cruz-Burelo; SA De La Motte; G De Nardo; G De Pietro; R de Sangro; M Destefanis; S Dey; R Dhamija; A Di Canto; F Di Capua; J Dingfelder; Z Doležal; I Domínguez Jiménez; TV Dong; M Dorigo; D Dossett; K Dugic; G Dujany; P Ecker; D Epifanov; J Eppelt; P Feichtinger; T Ferber; T Fillinger; C Finck; G Finocchiaro; A Fodor; F Forti

Journal article

Improved measurement of Born cross sections for χbJ ω and χbJ (π π−π0)non−ω (J = 0, 1, 2) at Belle and Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, M Angelsmark, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade Show all

Journal of High Energy Physics | Springer Science and Business Media LLC | Published : 2026

DOI: 10.1007/JHEP04(2026)101

Open access

Abstract

We study the processes χbJ ω and χbJ (π+π−π0)non−ω (J = 0, 1, 2) at center-of-mass energies from 10.73 to 11.02 GeV using a 142.5 fb−1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e− collider; and at GeV using a 19.8 fb−1 sample collected with Belle II at SuperKEKB. We find that the Υ(10753) state decays into χbJ ω but not into χbJ (π+π−π0)non−ω, while the Υ(10860) state, in contrast, decays into χbJ (π+π−π0)non−ω but not into χbJ ω. The mass and width of the Υ(10753) state are measured to be (10756.1 ± 3.4(stat.) ± 2.7(syst.)) MeV/c2 and (32.2 ± 11.3(stat.) ± 14.9(syst.)) MeV. The products of the partial width to e+e− and branching fractions for Υ(10753) → χ..

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