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Search for (B)over-bar(0)->Lambda(+)(c)(Lambda)over-bar(c)(-) decay at Belle

Authors
Uchida, Y.Ozaki, H.Kichimi, H.Adachi, I.Aihara, H.Arinstein, K.Aushev, T.Bakich, A. M.Balagura, V.Barberio, E.Bay, A.Belous, K.Bhardwaj, V.Bitenc, U.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chang, M. -C.Chao, Y.Chen, A.Chen, W. T.Cheon, B. G.Chistov, R.Cho, I. -S.Choi, Y.Dalseno, J.Dash, M.Drutskoy, A.Eidelman, S.Gabyshev, N.Golob, B.Ha, H.Haba, J.Hayasaka, K.Hazumi, M.Heffernan, D.Hoshi, Y.Hou, W. -S.Hsiung, Y. B.Hyun, H. J.Ikado, K.Inami, K.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, M.Iwasaki, Y.Kah, D. H.Kaji, H.Kang, J. H.Katayama, N.Kawai, H.Kawasaki, T.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kuo, C. C.Kuzmin, A.Kwon, Y. -J.Lee, J. S.Lee, M. J.Lee, S. E.Lesiak, T.Lin, S. -W.Liventsev, D.Mandl, F.McOnie, S.Medvedeva, T.Mitaroff, W.Miyake, H.Miyata, H.Miyazaki, Y.Mizuk, R.Moloney, G. R.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Nozaki, T.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Peak, L. S.Pestotnik, R.Piilonen, L. E.Sakai, Y.Schneider, O.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shibuya, H.Shiu, J. -G.Shwartz, B.Singh, J. B.Somov, A.Stanic, S.Staric, M.Sumiyoshi, T.Suzuki, S. Y.Takasaki, F.Tanaka, M.Taylor, G. N.Teramoto, Y.Tikhomirov, I.Ueno, K.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Vervink, K.Wang, C. C.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yamashita, Y.Yamauchi, M.Zhang, C. C.Zhang, Z. P.Zhulanov, V.Zupanc, A.Zyukova, O.
Issue Date
3월-2008
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.77, no.5
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
77
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123993
DOI
10.1103/PhysRevD.77.051101
ISSN
1550-7998
Abstract
We search for the doubly charmed baryonic decay (B) over bar (0) Lambda(+)(c)(Lambda) over bar (-)(c), in a data sample of 520 x 10(6) B (B) over bar events accumulated at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We find no significant signal and set an upper limit of B((B) over bar (0) -> Lambda(+)(c)(Lambda) over bar (-)(c)) < 6.2 x 10(-5) at 90% confidence level. The result is significantly below a naive extrapolation from B B(<(B)over bar> -> Xi(0)(c)(Lambda) over bar (-)(c) assuming a simple Cabibbo-suppression factor of vertical bar V-cd/V-cs vertical bar(2). The small branching fraction may be attributed to a suppression due to the large momentum of the baryonic decay products, which has been observed in other charmed baryonic two-body B decays.
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