Inclusive study of bottomonium production in association with an η meson in e+
annihilations near Υ(5 S) : Belle Collaboration
We study bottomonium production in association with an η meson in e+e- annihilations near the Υ(5 S) , at a centre-of-mass energy of s=10.866 GeV. The results are based on the 121.4 fb- 1 data sample collected by the Belle experiment at the asymmetric-energy KEKB collider. Only the η meson is reconstructed and the missing-mass spectrum of η candidates is investigated. We observe the e+e-→ ηΥJ(1 D) process and find evidence for the e+e-→ ηΥ(2 S) process, while no significant signals of Υ(1 S) , hb(1 P) , nor hb(2 P) are found. Cross sections for the studied processes are reported.
Tamponi, U; Guido, E; Mussa, R; Adachi, I; Aihara, H; Al Said, S; Asner, DM; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bakich, AM; Bansal, V; Barberio, E; Behera, P; Berger, M; Bhardwaj, V; Bhuyan, B; Biswal, J; Bondar, A; Bozek, A; Bračko, M; Browder, TE; Červenkov, D; Chen, A; Cheon, BG; Chilikin, K; Cho, K; Choi, Y; Cinabro, D; Cunliffe, S; Czank, T; Dash, N; Di Carlo, S; Doležal, Z; Drásal, Z; Eidelman, S; Epifanov, D; Fast, JE; Ferber, T; Fulsom, BG; Garg, R; Gaur, V; Gabyshev, N; Garmash, A; Gelb, M; Goldenzweig, P; Haba, J; Hara, T; Hayasaka, K; Hayashii, H; Hedges, MT; Hou, WS; Inami, K; Inguglia, G; Ishikawa, A; Itoh, R; Iwasaki, M; Iwasaki, Y; Jaegle, I; Jeon, HB; Jin, Y; Joo, KK; Julius, T; Kang, KH; Kawasaki, T; Kichimi, H; Kim, DY; Kim, HJ; Kim, JB; Kim, KT; Kim, SH; Kinoshita, K; Kodyš, P; Korpar, S; Kotchetkov, D; Križan, P; Kroeger, R; Krokovny, P; Kulasiri, R; Kwon, YJ; Lee, IS; Lee, SC; Li, LK; Li, Y; Li Gioi, L; Libby, J; Liventsev, D; Luo, T; Masuda, M; Matsuda, T; Matvienko, D; Merola, M; Miyata, H; Mizuk, R; Mohanty, GB; Moon, HK; Mori, T
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