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Ziyu Zhang, Guang Zhao, Shengsen Sun, Qing Pu, Chunxiu Liu, Chunxu Yu, Dong Liu, Hang Qi, Guangshun Huang, Tobias Stockmanns, Beijiang Liu, Fei Wang, Yitong Zhang and Xiaoyan Shen
For high-energy π0" role="presentation">??0p0
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mesons, the angle between the two final-state photons decreases with the increase in the energy of the π0" role="presentation">??0p0
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, which enhances the probability of overlappin...
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