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arXiv · 2206.08527

Measurement of the branching fraction of $\Xi_{c}^{0}\to \Lambda_{c}^{+}\pi^{-}$ at Belle

Belle Collaboration·S. S. Tang·Y. B. Li·C. P. Shen·YI. Adachi·H. Aihara·D. M. Asner·H. Atmacan·T. Aushev·R. Ayad·V. Babu·P. Behera·K. Belous·M. Bessner·V. Bhardwaj·B. Bhuyan·T. Bilka·D. Bodrov·G. Bonvicini·J. Borah·A. Bozek·M. Bračko·P. Branchini·A. Budano·D. Červenkov·M. -C. Chang·P. Chang·V. Chekelian·B. G. Cheon·K. Chilikin·H. E. Cho·K. Cho·S. -J. Cho·S. -K. Choi·Y. Choi·S. Choudhury·D. Cinabro·S. Das·G. De Pietro·R. Dhamija·F. Di Capua·J. Dingfelder·Z. Doležal·T. V. Dong·D. Ferlewicz·B. G. Fulsom·R. Garg·V. Gaur·N. Gabyshev·A. Garmash·A. Giri·P. Goldenzweig·E. Graziani·T. Gu·K. Gudkova·C. Hadjivasiliou·H. Hayashii·M. T. Hedges·D. Herrmann·W. -S. Hou·K. Inami·N. Ipsita·A. Ishikawa·R. Itoh·M. Iwasaki·W. W. Jacobs·S. Jia·Y. Jin·K. K. Joo·K. H. Kang·G. Karyan·C. Kiesling·C. H. Kim·D. Y. Kim·K. -H. Kim·K. Kinoshita·P. Kodyš·A. Korobov·S. Korpar·E. Kovalenko·P. Križan·P. Krokovny·M. Kumar·K. Kumara·Y. -J. Kwon·T. Lam·J. S. Lange·S. C. Lee·J. Li·L. K. Li·Y. Li·L. Li Gioi·J. Libby·K. Lieret·D. Liventsev·M. Masuda·D. Matvienko·S. K. Maurya·F. Meier·M. Merola
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Abstract

Based on a data sample of 983 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we present the study of the heavy-flavor-conserving decay $\Xi_{c}^{0}\to \Lambda_{c}^{+}\pi^{-}$ with $\Lambda_{c}^{+}$ reconstructed via its $pK^{-} \pi^{+}$ decay mode. The branching fraction ratio $\mathcal{B}(\Xi_{c}^{0}\to \Lambda_{c}^{+}\pi^{-})/\mathcal{B}(\Xi_{c}^{0}\to \Xi^{-}\pi^{+})$ is measured to be $0.38 \pm 0.04 \pm 0.04$. Combing with the world average value of $\mathcal{B}(\Xi_{c}^{0}\to \Xi^{-}\pi^{+})$, the branching fraction $\mathcal{B}(\Xi_{c}^{0}\to \Lambda_{c}^{+}\pi^{-})$ is deduced to be $(0.54 \pm 0.05 \pm 0.05 \pm 0.12)\%$. Here, the uncertainties above are statistical, systematic, and from $\mathcal{B}(\Xi_c^{0} \to \Xi^{-}\pi^{+})$, respectively.

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Belle Collaboration, S. S. Tang, Y. B. Li, C. P. Shen, YI. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, P. Behera, K. Belous, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, D. Bodrov, G. Bonvicini, J. Borah, A. Bozek, M. Bračko, P. Branchini, A. Budano, D. Červenkov, M. -C. Chang, P. Chang, V. Chekelian, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. -J. Cho, S. -K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Das, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. Doležal, T. V. Dong, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, K. Gudkova, C. Hadjivasiliou, H. Hayashii, M. T. Hedges, D. Herrmann, W. -S. Hou, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, C. Kiesling, C. H. Kim, D. Y. Kim, K. -H. Kim, K. Kinoshita, P. Kodyš, A. Korobov, S. Korpar, E. Kovalenko, P. Križan, P. Krokovny, M. Kumar, K. Kumara, Y. -J. Kwon, T. Lam, J. S. Lange, S. C. Lee, J. Li, L. K. Li, Y. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, M. Masuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola. 2022-06-17. Measurement of the branching fraction of $\Xi_{c}^{0}\to \Lambda_{c}^{+}\pi^{-}$ at Belle. https://doi.org/10.1103/physrevd.107.032005

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