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学术预告—Factorization and power corrections in Pion transition form factor

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讲座主题:Factorization and power corrections in Pion transition form factor

专家姓名:沈月龙

工作单位:中国海洋大学

讲座时间:2018-12-14 11:00

讲座地点:光电学院1511报告厅

主办单位:烟台大学光电信息科学技术学院

内容摘要:

We reconsider factorization for the leading power contribution to the Pion transition form factor  at one loop, and demonstrate the equivalence of the resulting factorization formulae derived with distinct prescriptions of Gamma5 in dimensional regularization. The Power corrections from hadronic structure suffer from endpoint singularity, we employed  the light-cone QCD sum rules (LCSRs) as well as keeping transverse momentum of parton to regularize the endpoint divergence.  Confronting our theoretical predictions with the experimental measurements from the BaBar and the Belle Collaborations implies that a reasonable agreement can be achieved without introducing an exotic end-point behaviour for the twist-2 pion DA.

主讲人介绍:

沈月龙,男,2002年本科毕业于山东师范大学物理学院,2007年获中科院高能物理研究所博士学位,现任中国海洋大学信息科学与工程学院副教授,2011-2012年在台湾中央研究院从事博士后研究工作。主要研究量子色动力学因子化以及幂次修正,现发表SCI论文30多篇,多次在国际学术会议上做特邀报告。