Numerical evaluation of two-loop integrals in FDR
Numerical evaluation of two-loop integrals in FDR
复制标题
FDR 中二环积分的数值计算
DOI:
10.1007/jhep02(2016)029
复制
发表时间:
2015
影响因子:
5.4
通讯作者:
T. Zirke
中科院分区:
文献类型:
--
作者:
T. Zirke
A bstractWe present a method to numerically evaluate infrared-finite one- and two-loop integrals within the Four-Dimensional Regularization/Renormalization approach, in which a small mass serves as regulator. Typical integrals exhibit a logarithmic dependence on this mass, which we extract with the aid of suitable subtraction terms that can easily be integrated analytically until the logarithmic structure is revealed. As first physical applications to test the method, we calculate QCD corrections to the decay rates of scalar and pseudoscalar Higgs bosons into two photons in the limit of an infinite top-quark mass as well as to the ρ parameter.
DOI:
10.1016/j.cpc.2010.04.009
发表时间:
2010
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
M. Tentyukov;J. A. M. Vermaseren
通讯作者:
J. A. M. Vermaseren