摘要
We describe a method for measuring the electromagnetic form factors of the D＊ meson at time-like momentum transfer in e＋e- annihilation. This is to study the joint angular distribution of the e＋e- →γ＊→D＊＋D＊-, D＊＋ →D0π＋, and D＊-→＊D0π- processes. The magnitudes and relative phases of the charge, magnetic and quadrupole form factors can be determined. The method can also be applied to other vector particles.
We describe a method for measuring the electromagnetic form factors of the D＊ meson at time-like momentum transfer in e＋e- annihilation. This is to study the joint angular distribution of the e＋e- →γ＊→D＊＋D＊-, D＊＋ →D0π＋, and D＊-→＊D0π- processes. The magnitudes and relative phases of the charge, magnetic and quadrupole form factors can be determined. The method can also be applied to other vector particles.
基金
Supported by National Natural Science Foundation of China(11675166)
