Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γpp

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LIU Xiao-Hai, ZHANG Yuan-Jiang and ZHAO Qiang. Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γpp[J]. Chinese Physics C, 2010, 34(9): 1402-1404. doi: 10.1088/1674-1137/34/9/054
LIU Xiao-Hai, ZHANG Yuan-Jiang and ZHAO Qiang. Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γpp[J]. Chinese Physics C, 2010, 34(9): 1402-1404.  doi: 10.1088/1674-1137/34/9/054 shu
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Received: 2010-01-27
Revised: 1900-01-01
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Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γpp

    Corresponding author: ZHAO Qiang,

Abstract: 

We propose one possible mechanism, i.e., the vector meson (VV) rescattering effects, to interpret the near threshold narrow enhancement observed in J/ψ→γpp. The estimate indicates that these effects can give sizeable contributions to this channel, and a destructive interference between different rescattering amplitudes is required to reproduce the line shape of the data.

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