Search for Two-Body B Meson Decays to Λ^0 and Ω^(*)0_c

Belle Collaboration,V. Savinov,I. Adachi,J. K. Ahn,H. Aihara,D. M. Asner,H. Atmacan,R. Ayad,Sw. Banerjee,J. Bennett,M. Bessner,V. Bhardwaj,D. Biswas,A. Bobrov,D. Bodrov,J. Borah,M. Bračko,P. Branchini,T. E. Browder, A. Budano,D. Červenkov,M. -C. Chang,P. Chang,B. G. Cheon,K. Cho,S. -K. Choi,Y. Choi, S. Choudhury,N. Dash,G. De Nardo,G. De Pietro,R. Dhamija,F. Di Capua,J. Dingfelder,Z. Doležal,S. Dubey,P. Ecker,D. Epifanov, D. Ferlewicz,B. G. Fulsom,V. Gaur,A. Giri,P. Goldenzweig,E. Graziani,T. Gu,Y. Guan,K. Gudkova,C. Hadjivasiliou,H. Hayashii,S. Hazra,M. T. Hedges,W. -S. Hou,K. Inami,N. Ipsita,A. Ishikawa,R. Itoh,M. Iwasaki,W. W. Jacobs,Y. Jin,D. Kalita, C. H. Kim, D. Y. Kim,K. -H. Kim, Y. -K. Kim,K. Kinoshita, P. Kodyš,A. Korobov, S. Korpar, E. Kovalenko, P. Križan,P. Krokovny, T. Kuhr, R. Kumar,T. Kumita,A. Kuzmin,Y. -J. Kwon,Y. -T. Lai,T. Lam, J. S. Lange,L. K. Li,Y. Li,Y. B. Li,L. Li Gioi,J. Libby,D. Liventsev,T. Luo,Y. Ma,M. Masuda, T. Matsuda,S. K. Maurya,F. Meier,M. Merola,I. Nakamura,M. Nakao,Z. Natkaniec,L. Nayak,M. Nayak,S. Nishida,S. Ogawa,H. Ono,P. Pakhlov,G. Pakhlova,S. Pardi,H. Park,J. Park,S. -H. Park,A. Passeri,S. Patra, R. Pestotnik,L. E. Piilonen,T. Podobnik,E. Prencipe,M. T. Prim,G. Russo,S. Sandilya,L. Santelj,G. Schnell, C. Schwanda,Y. Seino,K. Senyo,W. Shan,C. Sharma,J. -G. Shiu, E. Solovieva,M. Starič,M. Sumihama,M. Takizawa,U. Tamponi, K. Tanida, F. Tenchini,R. Tiwary,K. Trabelsi,M. Uchida,Y. Unno,S. Uno,K. E. Varvell,E. Wang,S. Watanuki,E. Won,X. Xu,B. D. Yabsley,W. Yan,J. H. Yin,C. Z. Yuan,L. Yuan,Y. Yusa, Z. P. Zhang,V. Zhilich,V. Zhukova

arxiv(2024)

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摘要
We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral B mesons to Λ^0 and Ω^(*)0_c using 711 fb^-1 of data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+ e^- collider. We observe no evidence of signal from any such decays and set 95% confidence-level upper limits on the products of B^0 and B̅^0 branching fractions for these two-body decays with ℬ(Ω_c^0→π^+ Ω^-) in the range between 9.5 × 10^-8 and 31.2 × 10^-8.
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