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arXiv · 2305.18821

Evidence for $B^0 \to p\bar{\Sigma}^0\pi^-$ at Belle

Belle Collaboration·C. -Y. Chang·M. -Z. Wang·I. Adachi·H. Aihara·S. Al Said·D. M. Asner·H. Atmacan·T. Aushev·R. Ayad·V. Babu·Sw. Banerjee·M. Bauer·P. Behera·K. Belous·J. Bennett·F. Bernlochner·M. Bessner·T. Bilka·D. Biswas·A. Bobrov·D. Bodrov·G. Bonvicini·J. Borah·A. Bozek·M. Bračko·P. Branchini·T. E. Browder·A. Budano·M. Campajola·L. Cao·D. Červenkov·M. -C. Chang·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 Nardo·G. De Pietro·R. Dhamija·F. Di Capua·Z. Doležal·T. V. Dong·S. Dubey·P. Ecker·T. Ferber·D. Ferlewicz·B. G. Fulsom·V. Gaur·A. Garmash·A. Giri·P. Goldenzweig·E. Graziani·T. Gu·Y. Guan·K. Gudkova·C. Hadjivasiliou·S. Halder·T. Hara·K. Hayasaka·H. Hayashii·S. Hazra·M. T. Hedges·D. Herrmann·W. -S. Hou·C. -L. Hsu·K. Inami·N. Ipsita·A. Ishikawa·R. Itoh·M. Iwasaki·Y. Iwasaki·W. W. Jacobs·S. Jia·Y. Jin·K. K. Joo·A. B. Kaliyar·T. Kawasaki·C. Kiesling·C. H. Kim·D. Y. Kim·K. -H. Kim·Y. -K. Kim·K. Kinoshita·P. Kodyš·T. Konno·A. Korobov·S. Korpar·E. Kovalenko·P. Križan·P. Krokovny·T. Kuhr·M. Kumar·K. Kumara
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Abstract

We search for the $B^0\to p\bar{\Sigma}^0\pi^-$ decay with $\bar{\Sigma}^0 \to \bar{\Lambda}\gamma$, where the $\gamma$ is not measured, using a data sample corresponding to an integrated luminosity of 711 $\rm{fb^{-1}}$ which contains 772 $\times$ $10^{6}$ $B\bar{B}$ pairs, collected around the $\Upsilon$(4S) resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. We measure for the first time the $B^0\to p\bar{\Sigma}^0\pi^-$ branching fraction to be $\mathcal{B}(B^0 \to p \bar\Sigma^0 \pi^-) = (1.17^{+0.43}_{-0.40}(\text{stat})\pm 0.07(\text{syst})) \times 10^{-6}$ with a significance of $3.0\sigma$. We simultaneously measure the branching fraction for the related channel $B^{0}\to p\bar{\Lambda}\pi^{-}$ with much improved precision.

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Belle Collaboration, C. -Y. Chang, M. -Z. Wang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, Sw. Banerjee, M. Bauer, P. Behera, K. Belous, J. Bennett, F. Bernlochner, M. Bessner, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, G. Bonvicini, J. Borah, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, L. Cao, D. Červenkov, M. -C. Chang, 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 Nardo, G. De Pietro, R. Dhamija, F. Di Capua, Z. Doležal, T. V. Dong, S. Dubey, P. Ecker, T. Ferber, D. Ferlewicz, B. G. Fulsom, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, Y. Guan, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, K. Hayasaka, H. Hayashii, S. Hazra, M. T. Hedges, D. Herrmann, W. -S. Hou, C. -L. Hsu, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, A. B. Kaliyar, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. Križan, P. Krokovny, T. Kuhr, M. Kumar, K. Kumara. 2023-05-30. Evidence for $B^0 \to p\bar{\Sigma}^0\pi^-$ at Belle. https://arxiv.org/abs/2305.18821

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