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  • Evidence for the η(b)(2S) and observation of h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ
    Bondar, A; Pedlar, T K; Aihara, H; Arinstein, K; Aushev, T; Aziz, T; Bakich, A M; Bhuyan, B; Bischofberger, M; Bozek, A; Bračko, M; Browder, T E; Chen, A; Chen, P; Choi, Y; Dalseno, J; Doležal, Z; Gaur, V; Garmash, A; Golob, B; Haba, J; Hayashii, H; Hoshi, Y; Hou, W-S; Hsiung, Y B; Hyun, H J; Ishikawa, A; Iwabuchi, M; Jaegle, I; Julius, T; Kawasaki, T; Kim, J H; Kim, K T; Kim, Y J; Kinoshita, K; Ko, B R; Kouzes, R T; Križan, P; Kuhr, T; Kumita, T; Kuzmin, A; Kwon, Y-J; Lange, J S; Lee, S-H; Li, J; Liu, C; Liu, Y; Liu, Z Q; Liventsev, D; Louvot, R; Matvienko, D; Miyata, H; Mohanty, G B; Mohapatra, D; Moll, A; Ng, C; Nishida, S; Nishimura, K; Nitoh, O; Nozaki, T; Ohshima, T; Olsen, S L; Park, C W; Park, H; Pestotnik, R; Petrič, M; Piilonen, L E; Röhrken, M; Santel, D; Sanuki, T; Schneider, O; Senyo, K; Seon, O; Shen, C P; Shibata, T-A; Shwartz, B; Simon, F; Smerkol, P; Sohn, Y-S; Solovieva, E; Stanič, S; Starič, M; Sumihama, M; Tatishvili, G; Tikhomirov, I; Trabelsi, K; Uchida, M; Uehara, S; Unno, Y; Uno, S; Varner, G; Vorobyev, V; Wang, C H; Wang, P; Watanabe, M; Williams, K M; Won, E; Yabsley, B D; Yamashita, Y; Zhang, Z P

    Physical review letters, 2012-Dec-07, Volume: 109, Issue: 23
    Journal Article

    We report the first evidence for the η(b)(2S) using the h(b)(2P)→η(b)(2S)γ transition and the first observation of the h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ transitions. The mass and width of the η(b)(1S) and η(b)(2S) are measured to be m(η(b)(1S))=(9402.4±1.5±1.8) MeV/c(2), m(η(b)(2S))=(9999.0±3.5(-1.9)(+2.8)) MeV/c(2), and Γ(η(b)(1S))=(10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b)(1P) and h(b)(2P) mass measurements. We use a 133.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

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