Multiloop calculations in HQET
高能物理 - 唯象学
2009-11-07 v1
摘要
Recently, algorithms for calculation of 3-loop propagator diagrams in HQET and on-shell QCD with a heavy quark have been constructed and implemented. These algorithms (based on integration by parts recurrence relations) reduce an arbitrary diagram to a combination of a finite number of basis integrals. Here I discuss various ways to calculate non-trivial bases integrals, either exactly or as expansions in epsilon. Some integrals of these two classes are related to each other by inversion, which provides a useful cross-check.
引用
@article{arxiv.hep-ph/0211328,
title = {Multiloop calculations in HQET},
author = {A. G. Grozin},
journal= {arXiv preprint arXiv:hep-ph/0211328},
year = {2009}
}
备注
Talk at ACAT'2002 (Moscow)