科研之友
微信
新浪微博
Facebook
分享链接
摘要
We evaluate, exactly in d, the master integrals contributing to massless three-loop QCD form factors. The calculation is based on a combination of a method recently suggested by one of the authors (R.L.) with other techniques: sector decomposition implemented in FIESTA, the method of Mellin-Barnes representation, and the PSLQ algorithm. Using our results for the master integrals we obtain analytical expressions for two missing constants in the epsilon-expansion of the two most complicated master integrals and present the form factors in a completely analytic form.
- 出版日期2010-4
