Study of electromagnetic decays of orbitally excited Xi(c) baryons

Study of electromagnetic decays of orbitally excited Ξc baryons
  • Yelton, J.
  • Adachi, I
  • Ahn, J. K.
  • Aihara, H.
  • Al Said, S.
  • ... Cheon, B. G.
  • 외 204명
Citations

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20
Citations

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17

초록

Using 980 fb-1 of data collected with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report a study of the electromagnetic decays of excited charmed baryons Ξc(2790) and Ξc(2815). A clear signal (8.6 standard deviations) is observed for Ξc(2815)0→Ξc0γ, and we measure: B[Ξc(2815)0 → Ξc0γ]B[Ξc(2815)0 → Ξc(2645)+π- → Ξc0π+π-]=0.41±0.05±0.03. We also present evidence (3.8 standard deviations) for the similar decay of the Ξc(2790)0 and measure: B[Ξc(2790)0 → Ξc0γ]B[Ξc(2790)0 → Ξc′+π- → Ξc+γπ-]=0.13±0.03±0.02. The first quoted uncertainties are statistical and the second systematic. We find no hint of the analogous decays of the Ξc(2815)+ and Ξc(2790)+ baryons and set upper limits at the 90% confidence level of: B[Ξc(2815)+ → Ξc+γ]B[Ξc(2815)+ → Ξc(2645)0π+ → Ξc+π-π+]<0.09, and B[Ξc(2790)+ → Ξc+γ]B[Ξc(2790)+ → Ξc′0π+ → Ξc0γπ+]<0.06. Approximate values of the partial widths of the decays are extracted, which can be used to discriminate between models of the underlying quark structure of these excited states.

제목
Study of electromagnetic decays of orbitally excited Xi(c) baryons
제목 (타언어)
Study of electromagnetic decays of orbitally excited Ξc baryons
저자
Yelton, J.Adachi, IAhn, J. K.Aihara, H.Al Said, S.Asner, D. M.Aushev, T.Ayad, R.Babu, VBahinipati, S.Behera, P.Beleno, C.Bennett, J.Bhardwaj, VBhuyan, B.Bilka, T.Biswal, J.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Campajola, M.Cervenkov, D.Chang, M-CChang, P.Chekelian, VChen, A.Cheon, B. G.Chilikin, K.Cho, K.Cho, S-JChoi, S-KChoi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.De Nardo, G.Di Capua, F.Dolezal, Z.Dong, T., VEidelman, S.Epifanov, D.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGabyshev, N.Garmash, A.Giri, A.Goldenzweig, P.Hadjivasiliou, C.Hartbrich, O.Hayasaka, K.Hayashii, H.Hedges, M. T.Villanueva, M. HernandezHou, W-SHsu, C-LIijima, T.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jia, S.Jin, Y.Joo, C. W.Joo, K. K.Kaliyar, A. B.Kang, K. H.Karyan, G.Kato, Y.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, B. H.Kim, D. Y.Kim, S. H.Kim, Y-KKinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kulasiri, R.Kumar, R.Kumara, K.Kuzmin, A.Kwon, Y-JLalwani, K.Lange, J. S.Lee, S. C.Lewis, P.Li, L. K.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Liptak, Z.Liventsev, D.Luo, T.MacQueen, C.Masuda, M.Matsuda, T.Matvienko, D.McNeil, J. T.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moon, T. J.Mori, T.Mrvar, M.Mussa, R.Nakano, E.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, M.Nisar, N. K.Nishida, S.Ogawa, K.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, H.Park, S-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Popov, VPrencipe, E.Prim, M. T.Ritter, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Savinov, VSchnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shapkin, M.Shebalin, VShen, C. P.Shiu, J-GShwartz, B.Singh, J. B.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Strube, J. F.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Vahsen, S. E.Van Tonder, R.Varner, G.Vinokurova, A.Vorobyev, V.Waheed, E.Wang, C. H.Wang, E.Wang, M-ZWang, P.Wang, X. L.Watanabe, M.Won, E.Xu, X.Yabsley, B. D.Yan, W.Yang, S. B.Ye, H.Yin, J. H.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V
DOI
10.1103/PhysRevD.102.071103
발행일
2020-10
유형
Article
저널명
Physical Review d
102
7
페이지
1 ~ 8

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