Evidence for the eta_b(2S) and observation of h_b(1P) -&gt; eta_b(1S) gamma and h_b(2P) -&gt; eta_b(1S) gamma
Creators: name: Belle Collaboration
name: Mizuk, R.
name: Asner, D. M.
name: Bondar, A.
name: Pedlar, T. K.
name: Adachi, I.
name: Aihara, H.
name: Arinstein, K.
name: Aulchenko, V.
name: Aushev, T.
name: Aziz, T.
name: Bakich, A. M.
name: Bay, A.
name: Belous, K.
name: Bhardwaj, V.
name: Bhuyan, B.
name: Bischofberger, M.
name: Bonvicini, G.
name: Bozek, A.
name: Bračko, M.
name: Browder, T. E.
name: Chekelian, V.
name: Chen, A.
name: Chen, P.
name: Cheon, B. G.
name: Chilikin, K.
name: Chistov, R.
name: Cho, I. -S.
name: Cho, K.
name: Choi, S. -K.
name: Choi, Y.
name: Dalseno, J.
name: Danilov, M.
name: Doležal, Z.
name: Drásal, Z.
name: Drutskoy, A.
name: Eidelman, S.
name: Epifanov, D.
name: Fast, J. E.
name: Gaur, V.
name: Gabyshev, N.
name: Garmash, A.
name: Golob, B.
name: Haba, J.
name: Hara, T.
name: Hayasaka, K.
name: Hayashii, H.
name: Horii, Y.
name: Hoshi, Y.
name: Hou, W. -S.
name: Hsiung, Y. B.
name: Hyun, H. J.
name: Iijima, T.
name: Ishikawa, A.
name: Itoh, R.
name: Iwabuchi, M.
name: Iwasaki, Y.
name: Iwashita, T.
name: Jaegle, I.
name: Julius, T.
name: Kang, J. H.
name: Kapusta, P.
name: Kawasaki, T.
name: Kim, H. J.
name: Kim, H. O.
name: Kim, J. H.
name: Kim, K. T.
name: Kim, M. J.
name: Kim, Y. J.
name: Kinoshita, K.
name: Ko, B. R.
name: Koblitz, S.
name: Kodyš, P.
name: Korpar, S.
name: Kouzes, R. T.
name: Križan, P.
name: Krokovny, P.
name: Kuhr, T.
name: Kumita, T.
name: Kuzmin, A.
name: Kwon, Y. -J.
name: Lange, J. S.
name: Lee, S. -H.
name: Li, J.
name: Libby, J.
name: Liu, C.
name: Liu, Y.
name: Liu, Z. Q.
name: Liventsev, D.
name: Louvot, R.
name: Matvienko, D.
name: McOnie, S.
name: Miyabayashi, K.
name: Miyata, H.
name: Mohanty, G. B.
name: Mohapatra, D.
name: Moll, A.
name: Muramatsu, N.
name: Mussa, R.
name: Nakao, M.
name: Natkaniec, Z.
name: Ng, C.
name: Nishida, S.
name: Nishimura, K.
name: Nitoh, O.
name: Nozaki, T.
name: Ohshima, T.
name: Okuno, S.
name: Olsen, S. L.
name: Onuki, Y.
name: Pakhlov, P.
name: Pakhlova, G.
name: Park, C. W.
name: Park, H.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Poluektov, A.
name: Röhrken, M.
name: Sakai, Y.
name: Sandilya, S.
name: Santel, D.
name: Sanuki, T.
name: Sato, Y.
name: Schneider, O.
name: Schwanda, C.
name: Senyo, K.
name: Seon, O.
name: Sevior, M. E.
name: Shapkin, M.
name: Shen, C. P.
name: Shibata, T. -A.
name: Shiu, J. -G.
name: Shwartz, B.
name: Sibidanov, A.
name: Simon, F.
name: Smerkol, P.
name: Sohn, Y. -S.
name: Sokolov, A.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Tanida, K.
name: Tatishvili, G.
name: Teramoto, Y.
name: Tikhomirov, I.
name: Trabelsi, K.
name: Tsuboyama, T.
name: Uchida, M.
name: Uehara, S.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Vanhoefer, P.
name: Varner, G.
name: Varvell, K. E.
name: Vinokurova, A.
name: Vorobyev, V.
name: Wang, C. H.
name: Wang, M. -Z.
name: Wang, P.
name: Wang, X. L.
name: Watanabe, M.
name: Watanabe, Y.
name: Williams, K. M.
name: Won, E.
name: Yabsley, B. D.
name: Yamaoka, J.
name: Yamashita, Y.
name: Yuan, C. Z.
name: Zhang, Z. P.
name: Zhilich, V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report the first evidence for the eta_b(2S) using the h_b(2P)-&gt;eta_b(2S)gamma transition and the first observation of the h_b(1P)-&gt;eta_b(1S)gamma and h_b(2P)-&gt;eta_b(1S)gamma transitions. The mass and width of the eta_b(1S) and eta_b(2S) are measured to be m_etab(1S)=(9402.4+-1.5+-1.8)MeV/c^2, m_etab(2S)=(9999.0+-3.5 +2.8-1.9)MeV/c^2 and Gamma_etab(1S)=(10.8 +4.0-3.7 +4.5-2.0)MeV. We also update the h_b(1P) and h_b(2P) mass measurements. We use a 133.4/fb data sample collected at energies near the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
description: 6 pages, 3 figures, version published in PRL