Abstract： We demonstrate that the effect of the initial-state radiation can be observed in the inclusive photon spectrum from electron-positron annihilation by careful analysis of the data collected in a detector optimized for high resolution measurement of photons. We present the first example of a photon line from radiative corrections of the J/ψ, resonance at total center-of-mass energy far above its mass. We also discuss potential applications of such effect in future electron-positron experiments.
YANG Hai-Jun;CHEN Guo-Ming;YANG Min;XIONG Zhao-Hua;LU Liang;LU Yu-Sheng;CHEN He-Sheng;TANG Xiao-Wei;Martin Pohl*;JIN Bing-Nian*
. Single W Boson Production at √s = 189 GeV[J]. 中国物理快报, 2000, 17(4): 258-260.
1993, Vol. 10 
