Search for Baryon-Number-Violating Processes in B- Decays to the Ξ ¯ c0 Λ ¯ c- Final State

T Gu; V Savinov; I Adachi; H Aihara; DM Asner; H Atmacan; T Aushev; R Ayad; S Banerjee; K Belous; J Bennett; M Bessner; V Bhardwaj; B Bhuyan; D Biswas; A Bobrov; D Bodrov; J Borah; A Bozek; M Bračko; P Branchini; TE Browder; A Budano; M Campajola; D Červenkov; MC Chang; P Chang; BG Cheon; K Chilikin; K Cho; SK Choi; Y Choi; S Choudhury; S Das; G De Nardo; G De Pietro; R Dhamija; F Di Capua; J Dingfelder; Z DoleŽal; TV Dong; S Dubey; P Ecker; T Ferber; D Ferlewicz; BG Fulsom; V Gaur; A Giri; P Goldenzweig; E Graziani; Y Guan; K Gudkova; C Hadjivasiliou; K Hayasaka; H Hayashii; MT Hedges; D Herrmann; WS Hou; CL Hsu; N Ipsita; A Ishikawa; R Itoh; M Iwasaki; WW Jacobs; S Jia; Y Jin; KK Joo; T Kawasaki; C Kiesling; CH Kim; DY Kim; KH Kim; YJ Kim; P Kodyš; A Korobov; S Korpar; E Kovalenko; P KriŽan; P Krokovny; T Kuhr; K Kumara; T Kumita; YJ Kwon; YT Lai; SC Lee; D Levit; LK Li; YB Li; L Li Gioi; D Liventsev; M Masuda; T Matsuda; SK Maurya; F Meier; M Merola; F Metzner; K Miyabayashi; R Mizuk; GB Mohanty; R Mussa

Journal article

Search for Baryon-Number-Violating Processes in B- Decays to the Ξ ¯ c0 Λ ¯ c- Final State

T Gu, V Savinov, I Adachi, H Aihara, DM Asner, H Atmacan, T Aushev, R Ayad, S Banerjee, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, D Biswas, A Bobrov, D Bodrov, J Borah, A Bozek, M Bračko Show all

Physical Review Letters | Published : 2024

DOI: 10.1103/PhysRevLett.133.071802

Abstract

We report the results of the first search for B- decays to the Ξ¯c0Λ¯c- final state using 711 fb-1 of data collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The results are interpreted in terms of both direct baryon-number-violating B- decay and Ξc0-Ξ¯c0 oscillations which follow the standard model decay B-→Ξc0Λ¯c-. We observe no evidence for baryon number violation and set the 95% confidence-level upper limits on the ratio of baryon-number-violating and standard model branching fractions B(B-→Ξ¯c0Λ¯c-)/B(B-→Ξc0Λ¯c-) to be <2.7% and on the effective angular frequency of mixing ω in Ξc0-Ξ¯c0 oscillations to be 1.3 ps).