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Search for B-s(0) -> hh decays at the Y(5S) resonance

Authors
Peng, C. -C.Chang, P.Adachi, I.Aihara, H.Aushev, T.Aziz, T.Bakich, A. M.Balagura, V.Barberio, E.Belous, K.Bhardwaj, V.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chang, M. -C.Chao, Y.Chen, A.Chen, K. -F.Chen, P.Cheon, B. G.Chiang, C. -C.Chistov, R.Cho, I. -S.Choi, Y.Dalseno, J.Danilov, M.Das, A.Dash, M.Drutskoy, A.Dungel, W.Eidelman, S.Gabyshev, N.Goldenzweig, P.Golob, B.Ha, H.Haba, J.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Inami, K.Itoh, R.Iwabuchi, M.Iwasaki, M.Iwasaki, Y.Joshi, N. J.Julius, T.Kang, J. H.Kawasaki, T.Kim, H. J.Kim, H. O.Kim, J. H.Kim, M. J.Kim, S. K.Kim, Y. J.Kinoshita, K.Ko, B. R.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kwon, Y. -J.Kyeong, S. -H.Lee, M. J.Lee, S. -H.Li, J.Limosani, A.Liu, C.Liventsev, D.Louvot, R.Matyja, A.McOnie, S.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Nakao, M.Nakazawa, H.Natkaniec, Z.Neubauer, S.Nishida, S.Nishimura, K.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Petric, M.Piilonen, L. E.Roehrken, M.Ryu, S.Sakai, Y.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shiu, J. -G.Shwartz, B.Smerkol, P.Sokolov, A.Staric, M.Sumisawa, K.Sumiyoshi, T.Tanaka, M.Taylor, G. N.Teramoto, Y.Trabelsi, K.Uehara, S.Unno, Y.Uno, S.Varner, G.Varvell, K. E.Vervink, K.Wang, C. H.Wang, P.Watanabe, M.Watanabe, Y.Wedd, R.Wicht, J.Won, E.Yabsley, B. D.Yamashita, Y.Yuan, C. Z.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zivko, T.Zyukova, O.
Issue Date
15-Oct-2010
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.82, no.7
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
82
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115510
DOI
10.1103/PhysRevD.82.072007
ISSN
1550-7998
Abstract
We have searched for B-s(0) --> hh decays, where h stands for a charged or neutral kaon, or a charged pion. These results are based on a 23: 6 fb(-1) data sample collected with the Belle detector on the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider, containing 1.25 x 10(6) B-s(()*())(B) over bar (()(s)*()) events. We observe the decay B-s(0) --> K+K- and measure its branching fraction, B(B-s(0) --> K+K-) = [3.8(-0.9)(+1.0)(stat) +/- 0.5(syst) +/- 0.5(f(s))] x 10(-5). The first error is statistical, the second is systematic, and the third error is due to the uncertainty in the B-s(0) production fraction in e(+)e(-) --> b (b) over bar events. No significant signals are seen in other decay modes, and we set upper limits at the 90% confidence level: B(B-s(0) --> K- pi+) < 1.2 x 10(-5), B(B-s(0) --> pi(+)pi(-)) < 2.6 x 10(-5), and B(B-s(0) --> K-0(K) over bar (0)) < 6.6 x 10(-5).
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