Infrared Renormalons and Power Corrections in Deep-Inelastic Sum Rules(19)

Infrared renormalons and $1/Q^2$ power corrections in deep-inelastic sum rules are studied. The renormalization of operators with power divergence are discussed. The higher-twist terms in the operator product expansion are shown to account for the residual

representing a link,starting at the discrete point n and ending at a neighbouring lattice point in the direction ?µ.P is the path-ordering operator.I de?ne an operator on lattice,O 4α(Λ2,n )=i Λ2

π2

µν sin k µπΛ k µk 4d 4k π2¯u γµγ5u.(25)

The calculation is done with Feynman rules in Euclidean space.From this we get the one-loop contribution to the coe?cient function,

13

搜索“diyifanwen.net”或“第一范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，第一范文网，提供最新高等教育Infrared Renormalons and Power Corrections in Deep-Inelastic Sum Rules(19)全文阅读和word下载服务。