Observation of Zb (10610) and Zb (10650) Decaying to B Mesons

Date Issued
24-05-2016
Author(s)
Garmash, A.
Abdesselam, A.
Adachi, I.
Aihara, H.
Asner, D. M.
Aushev, T.
Ayad, R.
Aziz, T.
Babu, V.
Badhrees, I.
Bakich, A. M.
Behera, P.
Bhardwaj, V.
Bhuyan, B.
Bobrov, A.
Bondar, A.
Bonvicini, G.
Bozek, A.
BraÄ ko, M.
Browder, T. E.
ÄŒervenkov, D.
Chekelian, V.
Chen, A.
Cheon, B. G.
Chilikin, K.
Cho, K.
Chobanova, V.
Choi, Y.
Cinabro, D.
Dalseno, J.
Danilov, M.
Dash, N.
DoleŽal, Z.
Drutskoy, A.
Dutta, D.
Eidelman, S.
Epifanov, D.
Farhat, H.
Fast, J. E.
Ferber, T.
Fulsom, B. G.
Gaur, V.
Gabyshev, N.
Gillard, R.
Goh, Y. M.
Goldenzweig, P.
Golob, B.
Hara, T.
Hayasaka, K.
Hayashii, H.
Iijima, T.
Ishikawa, A.
Itoh, R.
Iwasaki, Y.
Jaegle, I.
Joffe, D.
Joo, K. K.
Julius, T.
Kang, K. H.
Kato, E.
Kawasaki, T.
Kim, D. Y.
Kim, J. B.
Kim, K. T.
Kim, M. J.
Kim, S. H.
Kim, Y. J.
Kinoshita, K.
Korpar, S.
KriŽan, P.
Krokovny, P.
Kuhr, T.
Kuzmin, A.
Kwon, Y. J.
Lange, J. S.
Lee, I. S.
Li, C.
Li, H.
Li, L.
Li Gioi, L.
Indian Institute of Technology, Madras
Liventsev, D.
Lukin, P.
Masuda, M.
Matvienko, D.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Mohanty, G. B.
Moll, A.
Mori, T.
Mussa, R.
Nakano, E.
Nakao, M.
Nanut, T.
Natkaniec, Z.
Nishida, S.
Olsen, S. L.
Pakhlov, P.
Pakhlova, G.
DOI
Abstract
We report the analysis of the three-body e+e-→BBπ±, BB∗π±, and B∗B∗π± processes, including the first observations of the Zb±(10610)→[BB∗+c.c.]± and Zb±(10650)→[B∗B∗]± transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of σ(e+e-→[BB∗+c.c.]±π)=[17.4±1.6(stat)±1.9(syst)] pb and σ(e+e-→[B∗B∗]±π)=[8.75±1.15(stat)±1.04(syst)] pb and set a 90% C.L. upper limit of σ(e+e-→[BB]±π)<2.9 pb. The results are based on a 121.4 fb-1 data sample collected with the Belle detector at a center-of-mass energy near the (10860) peak.
Volume
116