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Study of the decay mechanism for B+ -> p(p)over-barK(+) and B+ -> p(p)over-bar pi(+)

Authors
Wei, J. -T.Wang, M. -Z.Adachi, I.Aihara, H.Aulchenko, V.Aushev, T.Bakich, A. M.Balagura, V.Barberio, E.Bay, A.Belous, K.Bitenc, U.Bondar, A.Bozek, A.Brako, M.Browder, T. E.Chang, P.Chao, Y.Chen, A.Chen, K. -F.Cheon, B. G.Chiang, C. -C.Cho, I. -S.Choi, Y.Choi, Y. K.Cole, S.Danilov, M.Dash, M.Drutskoy, A.Eidelman, S.Fratina, S.Gabyshev, N.Golob, B.Hap, H.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hazumi, M.Heffernan, D.Hokuue, T.Hoshi, Y.Hsiung, Y. B.Hyun, H. J.Iijima, T.Ikado, K.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Kah, D. H.Kang, J. H.Katayama, N.Kawai, H.Kawasaki, T.Kichimi, H.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kumar, R.Kuo, C. C.Kuzmin, A.Kwon, Y. -J.Lee, J. S.Lee, S. E.Lesiak, T.Lin, S. -W.Liu, Y.Liventsev, D.Mandl, E.Matsumoto, T.Matyja, A.McOnie, S.Medvedeva, T.Mitaroff, W.Miyabayashi, K.Miyake, H.Miyata, H.Miyazaki, Y.Mizuk, R.Nagasaka, Y.Nakano, E.Nakao, M.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, K. S.Pestotnik, R.Piilonen, L. E.Sahoo, H.Sakai, Y.Schneider, O.Schuemann, J.Seidl, R.Senyo, K.Sevior, M. E.Shapkin, M.Shibuya, H.Shiu, J. -G.Singh, J. B.Sokolov, A.Somov, A.Stanic, S.Staric, M.Sumiyoshi, T.Tajima, O.Takasaki, F.Tamai, K.Tanaka, M.Taylor, G. N.Teramoto, Y.Tian, X. C.Tikhomirov, I.Tsuboyama, T.Uehara, S.Ueno, K.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Varner, G.Varvell, K. E.Vervink, K.Villa, S.Vinokurova, A.Wang, C. C.Wang, C. H.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yamaguchi, A.Yamashita, Y.Yamauchi, M.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zupanc, A.
Issue Date
17-1월-2008
Publisher
ELSEVIER
Citation
PHYSICS LETTERS B, v.659, no.1-2, pp.80 - 86
Indexed
SCIE
SCOPUS
Journal Title
PHYSICS LETTERS B
Volume
659
Number
1-2
Start Page
80
End Page
86
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/124227
DOI
10.1016/j.physletb.2007.11.063
ISSN
0370-2693
Abstract
We study the characteristics of the low mass p (p) over bar enhancements near threshold in the three-body decays B+ -> p (p) over barK(+) and B+ -> p (p) over bar pi(+). We observe that the proton polar angle distributions in the p (p) over bar helicity frame in the two decays have the opposite polarity, and measure the forward-backward asymmetries as a function of the p mass for the p (p) over barK(+) mode. We also search for the intermediate two-body decays, B+ -> (p) over bar Delta(++) and B+ -> p (Delta) over bar (0), and set upper limits on their branching fractions. These results are obtained from a 414 fb(-1) data sample that contains 449 x 10(6) B (B) over bar events collected near the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. (c) 2007 Elsevier B.V. All rights reserved.
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