Measurement of e+e- →γχcJ via initial state radiation at Belle
The process e+e-→γχcJ (J=1, 2) is studied via initial state radiation using 980fb-1 of data at and around the (nS) (n=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signal is observed except from ψ(2S) decays. Upper limits on the cross sections between s=3.80 and 5.56 GeV are determined at the 90% credibility level, which range from a few pb to a few tens of pb. We also set upper limits on the decay rate of the vector charmonium [ψ(4040), ψ(4160), and ψ(4415)] and charmoniumlike [Y(4260), Y(4360), and Y(4660)] states to γχcJ.
Han, YL; Wang, XL; Yuan, CZ; Shen, CP; Wang, P; Abdesselam, A; Adachi, I; Aihara, H; Al Said, S; Asner, DM; Aushev, T; Babu, V; Badhrees, I; Bansal, V; Bhardwaj, V; Biswal, J; Bozek, A; Bračko, M; Chen, A; Cheon, BG; Chistov, R; Cho, K; Chobanova, V; Choi, SK; Cinabro, D; Dalseno, J; Danilov, M; DoleŽal, Z; Drutskoy, A; Dutta, D; Eidelman, S; Farhat, H; Fast, JE; Ferber, T; Fulsom, BG; Gaur, V; Gabyshev, N; Garmash, A; Getzkow, D; Gillard, R; Glattauer, R; Goh, YM; Goldenzweig, P; Golob, B; Haba, J; Hayasaka, K; Hayashii, H; He, XH; Horiguchi, T; Hou, WS; Iijima, T; Ishikawa, A; Jaegle, I; Joffe, D; Joo, KK; Kichimi, H; Kim, DY; Kim, JB; Kim, JH; Kim, KT; Kim, SH; Kim, YJ; Kinoshita, K; Ko, BR; Kodyš, P; KriŽan, P; Krokovny, P; Lewis, P; Li Gioi, L; Libby, J; Liventsev, D; Lukin, P; Masuda, M; Matvienko, D; Miyabayashi, K; Miyata, H; Mizuk, R; Moll, A; Moon, HK; Mussa, R; Nakano, E; Nakao, M; Nayak, M; Nisar, NK; Nishida, S; Ogawa, S; Okuno, S; Ostrowicz, W; Pakhlov, P; Pakhlova, G; Pal, B; Park, H; Pedlar, TK; Pestotnik, R; Petrič, M; Piilonen, LE; Pulvermacher, C; RibeŽl, E; Ritter, M; Rostomyan, A
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