The scalar box integral and the Mellin - Barnes representation
arXiv:1104.2661 · doi:10.1142/S0217751X11053444
Abstract
We solve exactly the scalar box integral using the Mellin-Barnes representation. Firstly we recognize the hypergeometric functions resumming the series coming from the scalar integrals, then we perform an analytic continuation before applying the Laurent expansion in^2 = (d !' 4)=2 of the result.
13 pages, no figures