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

Authors
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.
Issue Date
22-9월-2010
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.82, no.5
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
82
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/115663
DOI
10.1103/PhysRevD.82.051504
ISSN
1550-7998
Abstract
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).
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