Study of eta and dipion transitions in Upsilon(4S) decays to lower bottomonia

  • Guido, Elisa
  • Mussa, Roberto
  • Tamponi, Umberto
  • Adachi, Ichiro
  • Aihara, Hiroaki
  • ... Cheon, B. G.
  • 외 176명
Citations

WEB OF SCIENCE

19
Citations

SCOPUS

25

초록

We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure: B(Upsilon(4S) -> pi(+)pi(-)Upsilon(1S)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), B(Upsilon(4S) -> pi(+)pi(-)Upsilon(2S)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and B(Upsilon(4S) -> eta Upsilon(1S)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). We measure the ratio of branching fractions R=B(Upsilon(4S) -> eta Upsilon(1S))/B(Upsilon(4S) -> pi(+)pi(-)Upsilon(1S)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). We search for the decay Upsilon(1(3)D(1,2)) -> eta Upsilon(1S), but do not find significant evidence for such a transition. We also measure the initial state radiation production cross sections of the Upsilon(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the Upsilon(4S) -> pi(+)pi(-)Upsilon(1S) events shows indications for a resonant contribution due to the f(0)(980) meson.

키워드

IDENTIFICATION
제목
Study of eta and dipion transitions in Upsilon(4S) decays to lower bottomonia
저자
Guido, ElisaMussa, RobertoTamponi, UmbertoAdachi, IchiroAihara, HiroakiAl-Said, Said A.FarhaAsner, David  mAulchenko, Vladimir M.Aushev, Tagir A.KhAyad, RachidBadhrees, IbtesamBakich, A. M.Bansal, V.Behera, P.Bhardwaj, V.Bhuyan, B.Biswal, J.Bobrov, A.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, S. -K.Choi, Y.Cinabro, D.Dash, N.Di Carlo, S.Dolezal, Z.Drasal, Z.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gelb, M.Gillard, R.Goldenzweig, P.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hedges, M. T.Hou, W. -S.Iijima, T.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, Y.Jacobs, W. W.Jaegle, I.Jeon, H. B.Jia, S.Jin, Y.Joffe, D.Joo, K. K.Julius, T.Kang, K. H.Karyan, G.Kawasaki, T.Kim, D. Y.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Krokovny, P.Kulasiri, R.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lewis, P.Li, C. H.Li, L.Li Gioi, L.Libby, J.Liventsev, D.Lubej, M.Luo, T.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Moon, H. K.Mori, T.Nakano, E.Nakao, M.Nanut, T.Nath, J.Natkaniec, Z.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Pakhlov, P.Pakhlova, G.Pal, B.Pardi, S.Park, C. -S.Park, H.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Pulvermacher, C.Ritter, M.Rostomyan, A.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Strube, J. F.Sumisawa, K.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Usov, Y.Van Hulse, C.Varner, G.Vinokurova, A.Vorobyev, V.Vossen, A.Wang, C. H.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Watanuki, S.Widmann, E.Williams, K. M.Won, E.Yamashita, Y.Ye, H.Yuan, C. Z.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevD.96.052005
발행일
2017-09
유형
Article
저널명
Physical Review d
96
5
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