Artigo
One-loop n-point equivalence among negative-dimensional, Mellin-Barnes and Feynman parametrization approaches to Feynman integrals
Fecha
2003-11-28Registro en:
Journal of Physics A-mathematical and General. Bristol: Iop Publishing Ltd, v. 36, n. 47, p. 11859-11871, 2003.
0305-4470
10.1088/0305-4470/36/47/012
WOS:000188194800014
7511139477883318
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal do Paraná (UFPR)
Resumen
We show that at one-loop order, negative-dimensional, Mellin-Barnes (MB) and Feynman parametrization (FP) approaches to Feynman loop integral calculations are equivalent. Starting with a generating functional, for two and then for n-point scalar integrals, we show how to reobtain MB results, using negative-dimensional and FP techniques. The n-point result is valid for different masses, arbitrary exponents of propagators and dimension.