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arXiv · 1512.07419

Study of e+e- => B(*) B(*)-bar pi+- at sqrt(s)=10.866 GeV

A. Garmash·A. Abdesselam·I. Adachi·H. Aihara·D. M. Asner·T. Aushev·R. Ayad·T. Aziz·V. Babu·I. Badhrees·A. M. Bakich·P. Behera·V. Bhardwaj·B. Bhuyan·A. Bobrov·A. Bondar·G. Bonvicini·A. Bozek·M. Bracko·T. E. Browder·D. Chervenkov·V. Chekelian·A. Chen·B. G. Cheon·K. Chilikin·K. Cho·V. Chobanova·Y. Choi·D. Cinabro·J. Dalseno·M. Danilov·N. Dash·Z. Dolezal·A. Drutskoy·D. Dutta·S. Eidelman·D. Epifanov·H. Farhat·J. E. Fast·T. Ferber·B. G. Fulsom·V. Gaur·N. Gabyshev·R. Gillard·Y. M. Goh·P. Goldenzweig·B. Golob·T. Hara·K. Hayasaka·H. Hayashii·T. Iijima·A. Ishikawa·R. Itoh·Y. Iwasaki·I. Jaegle·D. Joffe·K. K. Joo·T. Julius·K. H. Kang·E. Kato·T. Kawasaki·D. Y. Kim·J. B. Kim·K. T. Kim·M. J. Kim·S. H. Kim·Y. J. Kim·K. Kinoshita·S. Korpar·P. Krizan·P. Krokovny·A. Kuzmin·Y. -J. Kwon·J. S. Lange·I. S. Lee·C. Li·H. Li·L. Li·L. Li Gioi·J. Libby·D. Liventsev·P. Lukin·M. Masuda·D. Matvienko·K. Miyabayashi·H. Miyata·R. Mizuk·G. B. Mohanty·A. Moll·T. Mori·R. Mussa·E. Nakano·M. Nakao·T. Nanut·Z. Natkaniec·S. Nishida·S. L. Olsen·P. Pakhlov·G. Pakhlova·B. Pal
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Abstract

We report the analysis of the three-body e+e- => B B-bar pi, B B*-bar pi, and B* B*-bar pi processes, including the first observation of the Zb+-(10610) =>[B B*-bar+c.c.]+- and Zb+-(10650) => [B*B*-bar]+- transitions. We measure visible cross sections for the three-body production of sigma_vis(e+e- => [B B*-bar+c.c.]+-pi-+=(11.2+-1.0(stat.)+-1.2(syst.)) pb and sigma_vis(e+e- => [B*B*-bar]+-pi-+)=(5.61+-0.73(stat.)+-0.66(syst.)) pb and set a 90% C.L. upper limit of sigma_vis(e+e- => [BB-bar]+-pi-+)<2.1 pb. The results are based on a 121.4 1/fb data sample collected with the Belle detector at a center-of-mass energy near the Y(5S) peak.

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A. Garmash, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Chervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. Li, H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, S. Nishida, S. L. Olsen, P. Pakhlov, G. Pakhlova, B. Pal. 2015-12-23. Study of e+e- => B(*) B(*)-bar pi+- at sqrt(s)=10.866 GeV. https://doi.org/10.1103/physrevlett.116.212001

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