文献类型：期刊文献

英文题名：Holographic QCD beyond the leading order

作者：Kim, Youngman[1];Ko, P.[1];Wu, Xiao-Hong[1,2]

机构：[1]Korea Inst Adv Study, Sch Phys, 207-43,Cheongryangri 2 Dong, Seoul 130722, South Korea;[2]E China Univ Sci & Technol, Sch Sci, Inst Modern Phys, Shanghai 200237, Peoples R China

年份：2008

期号：6

外文期刊名：JOURNAL OF HIGH ENERGY PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000257338000015)】；

语种：英文

外文关键词：AdS-FT correspondence; QCD

摘要：We consider a holographic QCD model for light mesons beyond the leading order in the context of 5-dim gauged linear sigma model on the interval in the AdS(5) space. We include two dimension-6 operators in addition to the canonical bulk kinetic terms, and study chiral dynamics of pi, rho, a(1) and some of their KK modes. As novel features of dim-6 operators, we get non-vanishing Br(a(1) -> pi gamma), the electromagnetic form factor and the charge radius of a charged pion, which improve the leading order results significantly and agree well with the experimental results.