Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-12-11
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, ReVTeX, 5 figures in postscript format, reference [12] corrected
Scientific paper
Negative dimensional integration method (NDIM) seems to be a very promising technique for evaluating massless and/or massive Feynman diagrams. It is unique in the sense that the method simultaneously gives solutions in different regions of external momenta. Moreover, it is a technique whereby the difficulties associated with performing parametric integrals --- the standard approach --- are transferred to a simpler solving of a system of linear algebraic equations. Employing this method, we calculate a massless two-loop three point vertex with all the external legs off-shell. Then NDIM approach allows us to obtain twenty-one distinct new power series representations for the integral in question. In order to verify the correctness of our results, we consider five particular cases where either two of the external legs are put on-shell, or one of them amputated or one exponent of the propagators is set to zero, and compare our results thus obtained with the ones calculated with standard methods in positive dimension.
Schmidt Alexandre G. M.
Suzuki Alfredo T.
No associations
LandOfFree
Solutions for a massless off-shell two-loop three-point vertex does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solutions for a massless off-shell two-loop three-point vertex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solutions for a massless off-shell two-loop three-point vertex will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-527380