Analytic Forms for Cross Sections of Di-lepton Production from e+e− Collisions around the J/ψ Resonance

分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-11-10

Xing-Yu Zhou Ya-Di Wang Li-Gang Xia

摘要： A detailed theoretical derivation of the cross sections of e+e− → e+e− and e+e− → µ+µ− around the J/ψ resonance is reported. The resonance and interference parts of the cross sections, related to J/ψ resonance parameters, are calculated. Higher-order corrections for vacuum polarization and initial-state radiation are consid-ered. An arbitrary upper limit of radiative correction integration is involved. Full and simplified versions of analytic formulae are given with precision at the level of 0.1% and 0.2%, respectively. Moreover, the results obtained in the paper can be applied to the case of the ψ(3686) resonance.

同行评议状态:待评议

 点击量 2845  下载量 1376  评论