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Observation of an alternative χc0(2P) candidate in e+e−→J/ψDD¯
Date Issued
01-06-2017
Author(s)
Chilikin, K.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Aulchenko, V.
Ayad, R.
Babu, V.
Badhrees, I.
Bakich, A. M.
Bansal, V.
Barberio, E.
Besson, D.
Bhardwaj, V.
Bhuyan, B.
Biswal, J.
Bobrov, A.
Bondar, A.
Bozek, A.
BraÄ ko, M.
Browder, T. E.
ÄŒervenkov, D.
Chekelian, V.
Chen, A.
Cheon, B. G.
Cho, K.
Choi, Y.
Cinabro, D.
Dash, N.
Di Carlo, S.
DoleŽal, Z.
Drásal, Z.
Dutta, D.
Eidelman, S.
Farhat, H.
Fast, J. E.
Ferber, T.
Fulsom, B. G.
Gaur, V.
Gabyshev, N.
Garmash, A.
Gillard, R.
Goldenzweig, P.
Haba, J.
Hara, T.
Hayasaka, K.
Hou, W. S.
Inami, K.
Ishikawa, A.
Itoh, R.
Iwasaki, Y.
Jacobs, W. W.
Jaegle, I.
Jeon, H. B.
Jin, Y.
Joffe, D.
Joo, K. K.
Julius, T.
Kang, K. H.
Karyan, G.
Katrenko, P.
Kim, D. Y.
Kim, H. J.
Kim, J. B.
Kim, K. T.
Kim, M. J.
Kim, S. H.
Kim, Y. J.
Kinoshita, K.
Kodyš, P.
Korpar, S.
Kotchetkov, D.
KriŽan, P.
Krokovny, P.
Kuhr, T.
Kulasiri, R.
Kuzmin, A.
Kwon, Y. J.
Lange, J. S.
Li, L.
Li Gioi, L.
Indian Institute of Technology, Madras
Liventsev, D.
Lubej, M.
Luo, T.
Masuda, M.
Matsuda, T.
Matvienko, D.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Mohanty, G. B.
Moon, H. K.
Mori, T.
Mussa, R.
Nakano, E.
Nakao, M.
Nanut, T.
Nath, K. J.
Natkaniec, Z.
Abstract
We perform a full amplitude analysis of the process e+e-→J/ψDD, where D refers to either D0 or D+. A new charmoniumlike state X∗(3860) that decays to DD is observed with a significance of 6.5σ. Its mass is (3862-32+26 -13+40) MeV/c2, and its width is (201-67+154 -82+88) MeV. The JPC=0++ hypothesis is favored over the 2++ hypothesis at the level of 2.5σ. The analysis is based on the 980 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB.
Volume
95