Han, X.Jia, S.Yuan, L.Shen, C. P.Adachi, I.Ahn, J. K.Aihara, H.Asner, D. M.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Banerjee, SwBehera, P.Belous, K.Bennett, J.Bessner, M.Bhardwaj, V.Bilka, T.Biswas, D.Bodrov, D.Borah, J.Bracko, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Cervenkov, D.Chang, M. -C.Chang, P.Chen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.De Nardo, G.De Pietro, G.Dhamija, R.Di Capua, F.Dolezal, Z.Dong, T. V.Epifanov, D.Ferber, T.Ferlewicz, D.Fulsom, B. G.Gaur, V.Giri, A.Goldenzweig, P.Graziani, E.Gu, T.Hadjivasiliou, C.Hara, T.Hayasaka, K.Hayashii, H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Ipsita, N.Ishikawa, A.Itoh, R.Iwasaki, M.Jacobs, W. W.Jang, E. -J.Ji, Q. P.Jin, Y.Kaliyar, A. B.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, Y. -K.Kinoshita, K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Krokovny, P.Kuhr, T.Kumar, M.Kumar, R.Kumara, K.Kwon, Y. -J.Lam, T.Laurenza, M.Lee, S. C.Li, C. H.Li, J.Li, L. K.Li, S. X.Li, Y.Li, Y. B.Gioi, L. LiLibby, J.Lieret, K.Masuda, M.Maurya, S. K.Merola, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mussa, R.Nakamura, I.Nakao, M.Nakazawa, H.Natkaniec, Z.Natochii, A.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Onuki, Y.Pakhlova, G.Park, H.Park, J.Patra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Prencipe, E.Prim, M. T.Rout, N.Russo, G.Sandilya, S.Santelj, L.Savinov, V.Schnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shan, W.Shapkin, M.Sharma, C.Shiu, J. -G.Shwartz, B.Solovieva, E.Staric, M.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, K.Uno, S.Urquijo, P.Vahsen, S. E.van Tonder, R.Varner, G.Vinokurova, A.Wang, X. L.Won, E.Yabsley, B. D.Yan, W.Yang, S. B.Yelton, J.Yin, J. H.Yuan, C. Z.Zhang, Z. P.Zhilich, V.Zhukova, V.2024-01-222024-01-222023-01-121029-8479https://hdl.handle.net/10919/117463Using a data sample of 980 fb−1 collected with the Belle detector at the KEKB asymmetric-energy e+e− collider, we study for the first time the singly Cabibbo-suppressed decays Ωc0→Ξ−π+ and Ω−K+ and the doubly Cabibbo-suppressed decay Ωc0→Ξ−K+. Evidence for an Ωc0 signal in the Ωc0→ Ξ−π+ mode is reported with a significance of 4.5σ including systematic uncertainties. The ratio of branching fractions to the normalization mode Ωc0→ Ω−π+ is measured to beB(Ωc0→Ξ−π+)/B(Ωc0→Ω−π+)=0.253±0.052(stat.)±0.030(syst.). No significant signals of Ωc0→Ξ−K+ and Ω−K+ modes are found. The upper limits at 90% confidence level on ratios of branching fractions are determined to beB(Ωc0→Ξ−K+)/B(Ωc0→Ω−π+)<0.070 andB(Ωc0→Ω−K+)/B(Ωc0→Ω−π+)<0.29. [Figure not available: see fulltext.].14 page(s)application/pdfenIn CopyrightPhysicsBranching fractionCharm Physicse(+)-e(-) ExperimentsParticle and Resonance ProductionArticle - Refereedhttps://doi.org/10.1007/JHEP01(2023)05520231Piilonen, Leo [0000-0001-6836-0748]1029-8479