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Measurement of B-0 -> J/psi eta((')) and constraint on the eta - eta ' mixing angle

Authors
Chang, M. -C.Duh, Y. -C.Lin, J. -Y.Adachi, I.Adamczyk, K.Aihara, H.Asner, D. M.Aushev, T.Bakich, A. M.Bhardwaj, V.Bhuyan, B.Bondar, A.Bozek, A.Bracko, M.Brodzicka, J.Browder, T. E.Chang, P.Chen, A.Chen, K. -F.Chen, P.Cheon, B. G.Chilikin, K.Chistov, R.Cho, I. -S.Choi, S. -K.Choi, Y.Dalseno, J.Dolezal, Z.Drasal, Z.Drutskoy, A.Eidelman, S.Fast, J. E.Gaur, V.Garmash, A.Goh, Y. M.Golob, B.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, Y.Iwashita, T.Julius, T.Katayama, N.Kawasaki, T.Kim, H. O.Kim, J. B.Kim, K. T.Kim, M. J.Kim, Y. J.Kinoshita, K.Ko, B. R.Koblitz, S.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kumar, R.Kumita, T.Kwon, Y. -J.Lange, J. S.Lee, S. -H.Li, J.Li, Y.Libby, J.Liu, C.Liu, Z. Q.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mizuk, R.Mohanty, G. B.Moll, A.Muramatsu, N.Nagasaka, Y.Nakamura, I.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nishimura, K.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlova, G.Park, C. W.Park, K. S.Pedlar, T. K.Peng, T.Pestotnik, R.Petric, M.Piilonen, L. E.Roehrken, M.Ryu, S.Sahoo, H.Sakai, K.Sakai, Y.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Sibidanov, A.Simon, F.Smerkol, P.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Sumihama, M.Sumiyoshi, T.Tanaka, S.Tatishvili, G.Teramoto, Y.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Vorobyev, V.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Williams, K. M.Won, E.Yamamoto, H.Yamashita, Y.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
Issue Date
4-5월-2012
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.85, no.9
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
85
Number
9
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/108450
DOI
10.1103/PhysRevD.85.091102
ISSN
1550-7998
Abstract
We measure the branching fractions of B-0 -> J/psi eta((')) decays with the complete Belle data sample of 772 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The results for the branching fractions are: B(B-0 -> J/psi eta) = (12.3 +/-(1.8)(1.7)+/- 0.7) x 10(-6) and B(B-0 -> J/psi eta') < 7.4 x 10(-6) at 90% confidence level. The eta-eta' mixing angle is constrained to be less than 42.2 degrees at 90% confidence level.
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