Search for Pc c ¯ s (4459)0 and Pc c ¯ s (4338)0 in ϒ (1S,2S) Inclusive Decays at Belle

I Adachi; L Aggarwal; H Ahmed; JK Ahn; H Aihara; N Akopov; M Alhakami; A Aloisio; N Althubiti; DM Asner; H Atmacan; V Aushev; M Aversano; R Ayad; V Babu; H Bae; NK Baghel; S Bahinipati; P Bambade; S Banerjee; S Bansal; 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; V Bhardwaj; B Bhuyan; F Bianchi; D Biswas; D Bodrov; A Bolz; A Boschetti; A Bozek; M Bračko; P Branchini; RA Briere; TE Browder; A Budano; S Bussino; Q Campagna; M Campajola; L Cao; G Casarosa; C Cecchi; J Cerasoli; MC Chang; P Chang; R Cheaib; P Cheema; BG Cheon; K Chilikin; K Chirapatpimol; HE Cho; K Cho; SJ Cho; SK Choi; S Choudhury; J Cochran; 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; F Di Capua; J Dingfelder; Z DoleŽal; I Domínguez Jiménez; TV Dong; X Dong; D Dossett; K Dugic; G Dujany; P Ecker; J Eppelt; P Feichtinger; T Ferber; T Fillinger; C Finck; G Finocchiaro; F Forti; BG Fulsom; A Gabrielli; E Ganiev; M Garcia-Hernandez; G Gaudino

Journal article

Search for Pc c ¯ s (4459)0 and Pc c ¯ s (4338)0 in ϒ (1S,2S) Inclusive Decays at Belle

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

Physical Review Letters | American Physical Society (APS) | Published : 2025

DOI: 10.1103/pf8m-6j69

Abstract

Using data samples of 102 million ϒ(1S) events and 158 million ϒ(2S) events collected by the Belle detector at the KEKB asymmetric-energy e+e- collider, we search for [udscc¯] pentaquark states decaying to J/ψΛ. Using the first observations of ϒ(1S,2S) inclusive decays to J/ψΛ, we find evidence of the Pcc¯s(4459)0 state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the Pcc¯s(4459)0 to be (4471.7±4.8±0.6) MeV/c2 and (22±13±3) MeV, respectively. The branching fractions for Pcc¯s(4459)0 production are measured to be B[ϒ(1S)→Pcc¯s(4459)0/P¯cc¯s(4459)0+anything]=(3.5±2.0±0.2)×10-6 and B[ϒ(2S)→Pcc¯s(4459)0..

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