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| 題名: | Measurements of the masses and widths of the Σc (2455)0 /++ and Σc (2520)0 /++ baryons |
| 作者: | 陳鎰鋒;Ko, B. R.;Won, E.;Adachi, I.;Aushev, T.;Ayad, R.;Bhuyan, B.;Bonvicini, G.;Browder, T. E.;Červenkov, D.;Cheon, B. G.;Chistov, R.;Cho, K.;Doležal, Z.;Drásal, Z.;Drutskoy, A.;Epifanov, D.;Ferber, T.;Frey, A.;Gaur, V.;Gabyshev, N.;Garmash, A.;Gillard, R.;Goh, Y. M.;Golob, B.;Hayashii, H.;He, X. H.;Iijima, T.;Iwashita, T.;Jaegle, I.;Julius, T.;Kato, Y.;Kiesling, C.;Kim, B. H.;Kim, D. Y.;Kim, J. B.;Kim, J. H.;Kim, M. J.;Kodyš, P.;Korpar, S.;Križan, P.;Kumita, T.;Kwon, Y.-J.;Lange, J. S.;Li, Y.;Libby, J.;Matvienko, D.;Miyabayashi, K.;Miyata, H.;Mori, T.;Nagasaka, Y.;Nakano, E.;Nakao, M.;Nedelkovska, E.;Nishida, S.;Nitoh, O.;Ogawa, S.;Pakhlov, P.;Peng, T.;Pestotnik, R.;Piilonen, L. E.;Ribežl, E.;Ritter, M.;Röhrken, M.;Rostomyan, A.;Sahoo, H.;Saito, T.;Sakai, K.;Sakai, Y.;Sandilya, S.;Santel, D.;Santelj, L.;Sanuki, T.;Sato, Y.;Semmler, D.;Senyo, K.;Seon, O.;Sevior, M. E.;Shapkin, M.;Shebalin, V.;Shen, C. P.;Shiu, J.-G.;Sohn, Y.-S.;Solovieva, E.;Starič, M.;Steder, M.;Sumiyoshi, T.;Tamponi, U.;Tanida, K.;Uehara, S.;Uglov, T.;Hulse, C. Van;Varvell, K. E.;Wagner, M. N.;Wang, C. H.;Watanabe, M.;Yamashita, Y.;Yashchenko, S.;Zhilich, V.;Zhulanov, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | ddc:530;FOS: Physical sciences;High Energy Physics - Experiment (hep-ex);info:eu-repo/classification/ddc/530;Physics |
| 日期: | 2014-05-22 |
| 上傳時間: | 2026-04-23 12:28:50 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We present measurements of the masses and decay widths of the baryonic states $ _{c}(2455)^{0/++}$ and $ _{c}(2520)^{0/++}$ using a data sample corresponding to an integrated luminosity of 711 fb$^{-1}$ collected with the Belle detector at the KEKB $e^{+}e^{-}$ asymmetric-energy collider operating at the $ (4S)$ resonance. We report the mass differences with respect to the $ _{c}^{+}$ baryon $M( _{c}(2455)^{0})-M( _{c}^{+}) = 167.29\pm0.01\pm0.02$ MeV/$c^{2}$, $M( _{c}(2455)^{++})-M( _{c}^{+}) = 167.51\pm0.01\pm0.02$ MeV/$c^{2}$, $M( _{c}(2520)^{0})-M( _{c}^{+}) = 231.98\pm0.11\pm0.04$ MeV/$c^{2}$, $M( _{c}(2520)^{++})-M( _{c}^{+}) = 231.99\pm0.10\pm0.02$ MeV/$c^{2}$, and the decay widths $ ( _{c}(2455)^{0}) = 1.76\pm0.04^{+0.09}_{-0.21}$ MeV/$c^{2}$, $ ( _{c}(2455)^{++}) = 1.84\pm0.04^{+0.07}_{-0.20}$ MeV/$c^{2}$, $ ( _{c}(2520)^{0}) = 15.41\pm0.41^{+0.20}_{-0.32}$ MeV/$c^{2}$, $ ( _{c}(2520)^{++}) = 14.77\pm0.25^{+0.18}_{-0.30}$ MeV/$c^{2}$, where the first uncertainties are statistical and the second are systematic. The isospin mass splittings are measured to be $M( _{c}(2455)^{++})-M( _{c}(2455)^{0})=0.22\pm0.01\pm0.01$ MeV/$c^{2}$ and $M( _{c}(2520)^{++})-M( _{c}(2520)^{0})=0.01\pm0.15\pm0.03$ MeV/$c^{2}$. These results are the most precise to date. 13 pages, 4 figures, Submitted to PRD(RC)
出版者： American Physical Society (APS)
出版日期： 2014-05-22
出處： Physical Review D, 2014-05, Vol.89 (9)
識別號： ISSN: 1550-7998
識別號： DOI: 10.48550/arxiv.1404.5389
識別號： DOI: 10.1103/physrevd.89.091102 |
| 顯示於類別: | [物理學系] 期刊論文
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