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First observation of Cabibbo-suppressed Xi(0)(c) decays

Authors
Chistov, R.Adachi, I.Aihara, H.Asner, D. M.Aulchenko, V.Aushev, T.Bakich, A. M.Bala, A.Bhardwaj, V.Bhuyan, B.Bondar, A.Bonvicini, G.Bozek, A.Bracko, M.Brodzicka, J.Browder, T. E.Chekelian, V.Chen, A.Chen, P.Cheon, B. G.Chilikin, K.Cho, I. -S.Cho, K.Chobanova, V.Choi, Y.Cinabro, D.Danilov, M.Dolezal, Z.Drutskoy, A.Dutta, D.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Feindt, M.Ferber, T.Frey, A.Gaur, V.Gabyshev, N.Ganguly, S.Gillard, R.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.Iwasaki, Y.Julius, T.Kah, D. H.Kang, J. H.Kato, E.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, J. H.Kim, K. T.Kim, Y. J.Kinoshita, K.Klucar, J.Ko, B. R.Kodys, P.Korpar, S.Krizan, P.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, S. -H.Li, J.Li, Y.Libby, J.Liu, C.Liu, Y.Liventsev, D.Lukin, P.Matvienko, D.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moll, A.Mori, T.Muramatsu, N.Mussa, R.Nakano, E.Nakao, M.Natkaniec, Z.Nayak, M.Nedelkovska, E.Ng, C.Nishida, S.Nitoh, O.Ogawa, S.Okuno, S.Olsen, S. L.Oswald, C.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Petric, M.Piilonen, L. E.Ritter, M.Roehrken, M.Rostomyan, A.Sahoo, H.Saito, T.Sakai, K.Sakai, Y.Sandilya, S.Santel, D.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Semmler, D.Senyo, K.Seon, O.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Sohn, Y. -S.Sokolov, A.Solovieva, E.Staric, M.Steder, M.Sumihama, M.Sumiyoshi, T.Tamponi, U.Tanida, K.Tatishvili, G.Teramoto, Y.Uchida, M.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Vahsen, S. E.Van Hulse, C.Vanhoefer, P.Varner, G.Varvell, K. E.Vinokurova, A.Wagner, M. N.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, Y.Williams, K. M.Won, E.Yabsley, B. D.Yamaoka, J.Yamashita, Y.Yashchenko, S.Yook, Y.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
Issue Date
10-10월-2013
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.88, no.7
Indexed
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
88
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/101883
DOI
10.1103/PhysRevD.88.071103
ISSN
2470-0010
Abstract
We report the first observation of the Cabibbo-suppressed decays Xi(0)(c) -> Xi K--(+), Xi(0)(c) -> Lambda K+K- and Xi(0)(c) -> Lambda phi, using a data sample of 711 fb(-1) collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the ratios of branching fractions to be B(Xi(0)(c)->Xi K--(+))/B(Xi(0)(c)->Xi(-)pi(+)) = (2.75 +/- 0.51 +/- 0.25) x 10(-2), B(Xi(0)(c)->Lambda K+K-)/B(Xi(0)(c)->Xi(-)pi(+)) = (2.86 +/- 0.61 +/- 0.37) x 10(-2) and B(Xi(0)(c)->Lambda phi)/B(Xi(0)(c)->Xi(-)pi(+)) = (3.43 +/- 0.58 +/- 0.32) X 10(-2), where the first uncertainty is statistical and the second is systematic.
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