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arXiv · 1304.6931

Evidence for B_s^0 -> Lambda_c^+ Lambda-bar pi^-

Belle Collaboration·E. Solovieva·R. Chistov·I. Adachi·D. M. Asner·T. Aushev·A. M. Bakich·A. Bala·V. Bhardwaj·B. Bhuyan·M. Bischofberger·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·T. E. Browder·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·K. Cho·V. Chobanova·Y. Choi·D. Cinabro·J. Dalseno·M. Danilov·Z. Doležal·Z. Drásal·A. Drutskoy·D. Dutta·S. Eidelman·D. Epifanov·H. Farhat·J. E. Fast·T. Ferber·V. Gaur·S. Ganguly·R. Gillard·Y. M. Goh·B. Golob·J. Haba·Y. Hoshi·W. -S. Hou·Y. B. Hsiung·M. Huschle·H. J. Hyun·T. Iijima·A. Ishikawa·R. Itoh·Y. Iwasaki·T. Julius·D. H. Kah·J. H. Kang·T. Kawasaki·C. Kiesling·D. Y. Kim·H. O. Kim·J. B. Kim·K. T. Kim·M. J. Kim·Y. J. Kim·K. Kinoshita·J. Klucar·B. R. Ko·P. Kodyš·S. Korpar·R. T. Kouzes·P. Križan·P. Krokovny·T. Kuhr·R. Kumar·T. Kumita·A. Kuzmin·Y. -J. Kwon·J. S. Lange·S. -H. Lee·J. Li·Y. Li·D. Liventsev·P. Lukin·D. Matvienko·H. Miyata·R. Mizuk·G. B. Mohanty·R. Mussa·E. Nakano·M. Nakao·E. Nedelkovska·N. K. Nisar·S. Nishida·O. Nitoh·S. Ogawa·S. Okuno·S. L. Olsen·P. Pakhlov·G. Pakhlova·H. Park·H. K. Park·T. K. Pedlar·R. Pestotnik
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Abstract

Using 121.4 fb^{-1} of data collected with the Belle detector at the Y(5S) resonance at the KEKB asymmetric-energy e^+e^- collider, we report evidence for the B_s^0 -> Lambda_c^+ Lambda-bar pi^- decay mode with a measured branching fraction (3.6 +- 1.1[stat.] {+0.3 -0.5}[syst.] +- 0.9[Lambda_c^+] +- 0.7[N_{Bs}]) * 10^{-4} and a significance of 4.4 standard deviations. This is the first evidence for a baryonic B_s^0 decay.

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Belle Collaboration, E. Solovieva, R. Chistov, I. Adachi, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, M. Huschle, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, T. Kawasaki, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, R. Mussa, E. Nakano, M. Nakao, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik. 2013-10-17. Evidence for B_s^0 -> Lambda_c^+ Lambda-bar pi^-. https://doi.org/10.1016/j.physletb.2013.08.057

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