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

Authors
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
Issue Date
26-10월-2020
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.102, no.7
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
102
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/130418
DOI
10.1103/PhysRevD.102.071103
ISSN
2470-0010
Abstract
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 Xi(c)(2790) and Xi(c)(2815). A clear signal (8.6 standard deviations) is observed for Xi(c)(2815)(0) -> Xi(0)(c)gamma, and we measure: B[Xi(c)(2815)(0) -> Xi(0)(c)gamma]/B[Xi(c)(2815)(0) -> Xi(c)(2645)(+)pi(-) -> Xi(0)(c)pi(+)pi(-)] = - 0.41 +/- 0.05 +/- 0.03. We also present evidence (3.8 standard deviations) for the similar decay of the Xi(c)(2790)(0) and measure:B[Xi(c)(2790)(0) -> Xi(0)(c)gamma]/B[Xi(c)(2790)(0) -> Xi(c)'(+)pi(-) -> Xi(+)(c)gamma pi(-)] = 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 Xi(c)(2815)(+) and Xi(c)(2790)(+) baryons and set upper limits at the 90% confidence level of: B[Xi(c)(2815)(0) -> Xi(0)(c)gamma]/B[Xi(c)(2815)(0) -> Xi(c)(2645)(0)pi(+) -> Xi(+)(c)pi(-)pi(+)] < 0.09, and B[Xi(c)(2790)(+) -> Xi(0)(c)gamma]/B[Xi(c)(2815)(+) -> Xi(c)'(0)pi(+) -> Xi(0)(c)gamma pi(+)] < 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.
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이과대학 (물리학과)
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