First observation of Cabibbo-suppressed Ξc0 decays

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题名:	First observation of Cabibbo-suppressed Ξc0 decays
作者:	陳鎰鋒;Chistov, R.;Asner, D. M.;Bala, A.;Bhardwaj, V.;Bondar, A.;Bonvicini, G.;Bozek, A.;Brodzicka, J.;Chekelian, V.;Cheon, B. G.;Chilikin, K.;Cho, I.-S.;Cho, K.;Chobanova, V.;Doležal, Z.;Drutskoy, A.;Dutta, D.;Eidelman, S.;Farhat, H.;Fast, J. E.;Frey, A.;Gillard, R.;Goh, Y. M.;Hayasaka, K.;Hayashii, H.;Horii, Y.;Hoshi, Y.;Hou, W.-S.;Hyun, H. J.;Iijima, T.;Ishikawa, A.;Iwasaki, Y.;Julius, T.;Kato, E.;Kawasaki, T.;Kiesling, C.;Kim, D. Y.;Kim, H. J.;Kim, J. H.;Kim, Y. J.;Kinoshita, K.;Ko, B. R.;Korpar, S.;Križan, P.;Kumita, T.;Kuzmin, A.;Kwon, Y.-J.;Lange, J. S.;Lee, S.-H.;Li, Y.;Liu, Y.;Liventsev, D.;Lukin, P.;Miyata, H.;Moll, A.;Muramatsu, N.;Mussa, R.;Nayak, M.;Nedelkovska, E.;Ng, C.;Nishida, S.;Ogawa, S.;Okuno, S.;Olsen, S. L.;Pakhlova, G.;Röhrken, M.;Sahoo, H.;Sakai, Y.;Sandilya, S.;Santelj, L.;Sanuki, T.;Savinov, V.;Schnell, G.;Semmler, D.;Shapkin, M.;Shibata, T.-A.;Shwartz, B.;Sibidanov, A.;Simon, F.;Sohn, Y.-S.;Sokolov, A.;Solovieva, E.;Starič, M.;Steder, M.;Sumihama, M.;Tanida, K.;Tatishvili, G.;Uchida, M.;Unno, Y.;Uno, S.;Urquijo, P.;Vanhoefer, P.;Varner, G.;Varvell, K. E.;Wang, C. H.;Wang, M.-Z.;Won, E.;Yamashita, Y.;Yashchenko, S.;Zhang, Z. P.
贡献者:	理學院物理學系
关键词:	ddc:530;High Energy Physics - Experiment;info:eu-repo/classification/ddc/530;Physics
日期:	2013-10-10
上传时间:	2026-04-23 11:55:55 (UTC+8)
出版者:	American Physical Society;American Physical Society (APS)
摘要:	摘要： We report the first observation of the Cabibbo-suppressed decays $\Xi_c^0\rightarrow \Xi^- K^+$, $\Xi_c^0\ra\Lambda K^+ K^-$ and $\Xi_c^0\rightarrow \Lambda \phi$, using a data sample of $711\, \mathrm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We measure the ratios of branching fractions to be $\frac{{\cal B}(\Xi_c^0\ra \Xi^- K^+)}{{\cal B}(\Xi^0_c\ra\Xi^-\pi^+)}=(2.75\pm 0.51\pm 0.25)\times 10^{-2}$, $\frac{{\cal B}(\Xi_c^0\ra\Lambda K^+ K^-)}{{\cal B}(\Xi_c^0\rightarrow\Xi^- \pi^+)}=(2.86\pm 0.61\pm 0.24)\times 10^{-2}$ and $\frac{{\cal B}(\Xi_c^0\ra \Lambda\phi)}{{\cal B}(\Xi^0_c\ra\Xi^-\pi^+)}=(3.43\pm 0.58\pm 0.32)\times 10^{-2}$, where the first uncertainty is statistical and the second is systematic. Comment: 8 pages, 6 figures, submitted to PRD(RC) 出版者： American Physical Society (APS) 出版日期： 2013-10-10 出處： Physical Review D, 2013-10, Vol.88 (7) 識別號： ISSN: 1550-7998 識別號： DOI: 10.1103/physrevd.88.071103
显示于类别:	[物理學系] 期刊論文

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