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Zhukova, V.*; 谷田 聖; Belle Collaboration*; 他155名*
Physical Review D, 97(1), p.012002_1 - 012002_21, 2018/01
被引用回数:8 パーセンタイル:41.02(Astronomy & Astrophysics)We report a new measurement of the exclusive cross sections as a function of the center-of-mass energy from the threshold through GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of fb. The accuracy of the cross section measurement is increased by a factor of two over the first Belle study. We perform the first angular analysis of the process and decompose this exclusive cross section into three components corresponding to the helicities.