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  • Observation of two resonant...
    Wang, X L; Yuan, C Z; Shen, C P; Wang, P; Adachi, I; Aihara, H; Arinstein, K; Bakich, A M; Barberio, E; Bedny, I; Bhardwaj, V; Bitenc, U; Bozek, A; Bracko, M; Brodzicka, J; Browder, T E; Chang, P; Chen, K-F; Cheon, B G; Chistov, R; Cho, I-S; Choi, S-K; Choi, Y; Danilov, M; Dash, M; Drutskoy, A; Eidelman, S; Epifanov, D; Gabyshev, N; Gokhroo, G; Hayashii, H; Hazumi, M; Heffernan, D; Hoshi, Y; Hou, W-S; Hyun, H J; Iijima, T; Ishino, H; Itoh, R; Kang, J H; Kawai, H; Kawasaki, T; Kichimi, H; Kim, H O; Kim, Y J; Kinoshita, K; Krizan, P; Lange, J S; Lee, J S; Lee, S E; Lesiak, T; Limosani, A; Lin, S-W; Liventsev, D; Mandl, F; McOnie, S; Miyabayashi, K; Mori, T; Nakano, E; Nakazawa, H; Nitoh, O; Noguchi, S; Ogawa, S; Ohshima, T; Olsen, S L; Ozaki, H; Pakhlov, P; Park, C W; Park, H; Piilonen, L E; Poluektov, A; Sahoo, H; Sakai, Y; Sekiya, A; Shibuya, H; Shiu, J-G; Shwartz, B; Singh, J B; Sokolov, A; Staric, M; Sumiyoshi, T; Takasaki, F; Tanaka, M; Tikhomirov, I; Uehara, S; Ueno, K; Uno, S; Urquijo, P; Villa, S; Vinokurova, A; Wang, C C; Wang, C H; Won, E; Yamaguchi, A; Yamashita, Y; Yamauchi, M; Zhang, Z P; Zhilich, V; Zhulanov, V; Zupanc, A

    Physical review letters, 10/2007, Letnik: 99, Številka: 14
    Journal Article

    The cross section for e+ e- --> pi+ pi- psi(2S) between threshold and sqrts=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c2 with a width of 74 +/- 15 +/- 10 MeV/c2, and another at 4664 +/- 11 +/- 5 MeV/c2 with a width of 48 +/- 15 +/- 3 MeV/c2, if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.