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Abstract:
In this paper we have got the angular distributions of the photon for the moments of process e+e-→J/ψ→γB(Jη),B(Jη)→P1P2. It provides a new way to determine the spin of ξ(2230).
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References
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K. Einsweiler, SLAGPUB-3702 (1983); R. M. Baltrusaitis et al., Phys. Rev,, Lett., 56(1986). 107[2] J. E. Augustin et al., LAL/85-27(1985).[3] J. J. Becker et al., Contrib. to 23rd Int. Conf. on HEP, Berkeley, 1986.[4] 月武光和郁宏,高能物理与核物理,待发.[5] S. U. Chung, Phys. Rev., 169(1968), 1342.[6] G. Eigen, CALT-68-1483 (1987).
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[1] |
GUO Yun-Jun
, HE Kang-Lin
. Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C,
2007, 31(11): 1050-1055. |
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