Search for charmonium and charmoniumlike states in Y(1S) radiative decays

  • Shen, C. P.
  • Wang, X. L.
  • Yuan, C. Z.
  • Wang, P.
  • Adachi, I.
  • ... Cheon, B. G.
  • 외 103명
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초록

Using a sample of 102 X 10(6) Y(1S) events collected with the Belle detector, we report on the first search for charge-parity-even charmonium and charmoniumlike states in Y(1S) radiative decays. No significant chi(cJ) or eta(c) signal is observed and 90% C. L. limits on B(Y(1S) -> gamma chi(c0)) < 6.5 X 10(-4), B(Y(1S) -> gamma chi(c1)) < 2.3 X 10(-5), B(Y(1S) -> gamma chi(c2)) < 7.6 X 10(-6), and B(Y(1S) -> gamma eta(c)) < 5.7 X 10(-5) are obtained. The product branching fraction limits B(Y(1S) -> gamma X(3872))B(X(3872) -> pi(+) pi(-) J/psi) < 1.6 X 10(-6), B(Y(1S) -> gamma X(3872))B(X(3872) -> pi+ pi(-) pi(0) J/psi) < 2.8 X 10(-6), B(Y(1S) -> gamma X(3915)) B(X(3915) -> omega J/psi) < 3.0 X 10(-6), and B(Y(1S) -> gamma Y(4140))B(Y(4140) -> phi J/psi) < 2.2 X 10(-6) are obtained at the 90% C.L. Furthermore, no evidence is found for excited charmonium states below 4.8 GeV/c(2).

제목
Search for charmonium and charmoniumlike states in Y(1S) radiative decays
저자
Shen, C. P.Wang, X. L.Yuan, C. Z.Wang, P.Adachi, I.Aihara, H.Aushev, T.Bakich, A. M.Balagura, V.Belous, K.Bhardwaj, V.Bischofberger, M.Bracko, M.Browder, T. E.Chang, M. -C.Chen, K. -F.Chen, P.Cheon, B. G.Choi, Y.Dalseno, J.Danilov, M.Dolezal, Z.Eidelman, S.Gabyshev, N.Ha, H.Haba, J.Hayasaka, K.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hyun, H. J.Inami, K.Itoh, R.Iwabuchi, M.Iwasaki, Y.Julius, T.Kang, J. H.Kawai, H.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, H. J.Kim, M. J.Kim, Y. J.Ko, B. R.Krizan, P.Kuhr, T.Kuzmin, A.Lange, J. S.Lee, M. J.Lee, S. -H.Leitner, R.Li, J.Liu, C.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mohanty, G. B.Mussa, R.Nakano, E.Nakao, M.Natkaniec, Z.Nishida, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlova, G.Park, C. W.Park, H.Pestotnik, R.Petric, M.Piilonen, L. E.Roehrken, M.Ryu, S.Sakai, Y.Schneider, O.Schwanda, C.Senyo, K.Sevior, M. E.Shang, L.Shapkin, M.Shiu, J. -G.Shwartz, B.Smerkol, P.Solovieva, E.Stanic, S.Staric, M.Teramoto, Y.Uglov, T.Unno, Y.Uno, S.Varner, G.Vervink, K.Wang, C. H.Wang, M. -Z.Wedd, R.Won, E.Yamashita, Y.Yamauchi, M.Zhang, C. C.Zhang, Z. P.Zhou, P.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.
DOI
10.1103/PhysRevD.82.051504
발행일
2010-09
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
82
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