Inclusive and exclusive measurements of B decays to χc1 and χc2 at Belle

Date Issued
29-03-2016
Author(s)
Bhardwaj, V.
Miyabayashi, K.
Panzenböck, E.
Trabelsi, K.
Frey, A.
Abdesselam, A.
Adachi, I.
Aihara, H.
Al Said, S.
Arinstein, K.
Asner, D. M.
Atmacan, H.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Badhrees, I.
Bahinipati, S.
Bakich, A. M.
Bala, A.
Bansal, V.
Barberio, E.
Bhuyan, B.
Biswal, J.
Bobrov, A.
Bondar, A.
Bozek, A.
BraÄ ko, M.
Browder, T. E.
ÄŒervenkov, D.
Chekelian, V.
Chen, A.
Cheon, B. G.
Chilikin, K.
Chistov, R.
Cho, K.
Chobanova, V.
Choi, S. K.
Choi, Y.
Cinabro, D.
Dalseno, J.
Danilov, M.
DoleŽal, Z.
Dutta, D.
Eidelman, S.
Farhat, H.
Fast, J. E.
Ferber, T.
Frost, O.
Fulsom, B. G.
Gaur, V.
Gabyshev, N.
Ganguly, S.
Garmash, A.
Gillard, R.
Glattauer, R.
Goh, Y. M.
Goldenzweig, P.
Golob, B.
Greenwald, D.
Haba, J.
Hamer, P.
Hayasaka, K.
Hayashii, H.
He, X. H.
Hou, W. S.
Iijima, T.
Inami, K.
Ishikawa, A.
Itoh, R.
Iwasaki, Y.
Jaegle, I.
Joffe, D.
Joo, K. K.
Julius, T.
Kato, E.
Katrenko, P.
Kawasaki, T.
Kiesling, C.
Kim, D. Y.
Kim, J. B.
Kim, K. T.
Kim, M. J.
Kim, S. H.
Kim, Y. J.
Kinoshita, K.
Ko, B. R.
Kobayashi, N.
Kodyš, P.
Korpar, S.
KriŽan, P.
Krokovny, P.
Kuhr, T.
Kumar, R.
Kumita, T.
Kuzmin, A.
Kwon, Y. J.
Lee, I. S.
Li, C.
Li, Y.
DOI
Abstract
We report inclusive and exclusive measurements for χc1 and χc2 production in B decays. We measure B(B→χc1X)=(3.03±0.05(stat)±0.24(syst))×10-3 and B(B→χc2X)=(0.70±0.06(stat)±0.10(syst))×10-3. For the first time, χc2 production in exclusive B decays in the modes B0→χc2π-K+ and B+→χc2π+π-K+ has been observed, along with first evidence for the B+→χc2π+KS0 decay mode. For χc1 production, we report the first observation in the B+→χc1π+π-K+, B0→χc1π+π-KS0 and B0→χc1π0π-K+ decay modes. Using these decay modes, we observe a difference in the production mechanism of χc2 in comparison to χc1 in B decays. In addition, we report searches for X(3872) and χc1(2P) in the B+→(χc1π+π-)K+ decay mode. The reported results use 772×106 BB-events collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
Volume
93