A general expression for symmetry factors of Feynman diagrams
CD Palmer, ME Carrington - Canadian journal of physics, 2002 - cdnsciencepub.com
The calculation of the symmetry factor corresponding to a given Feynman diagram is well
known to be a tedious problem. We have derived a simple formula for these symmetry …
known to be a tedious problem. We have derived a simple formula for these symmetry …
General formula for symmetry factors of Feynman diagrams
General formula for symmetry factors (S-factor) of Feynman diagrams containing fields with
high spins is derived. We prove that symmetry factors of Feynman diagrams of well-known …
high spins is derived. We prove that symmetry factors of Feynman diagrams of well-known …
Diagrammatic methods for spinors in Feynman diagrams
AD Kennedy - Physical Review D, 1982 - APS
We introduce new graphical methods which simplify the manipulation of group-theoretic
factors involving spinors which arise, for example, in the evaluation of Feynman diagrams …
factors involving spinors which arise, for example, in the evaluation of Feynman diagrams …
A rule for the combinatoric factors of Feynman diagrams
G Goldberg - Physical Review D, 1985 - APS
'So far as we know, this approach originated in a paper by Wu, published in this journal 23
years ago. Unfortunately, the rule has not been clearly stated or proved, and, as discussed …
years ago. Unfortunately, the rule has not been clearly stated or proved, and, as discussed …
[BOOK][B] Introduction to Feynman Diagrams: International Series of Monographs in Natural Philosophy
SM Bilenky - 2013 - books.google.com
Introduction to Feynman Diagrams provides Feynman diagram techniques and methods for
calculating quantities measured experimentally. The book discusses topics Feynman …
calculating quantities measured experimentally. The book discusses topics Feynman …
Some problems in loop calculations
JAM Vermaseren - arxiv preprint hep-ph/9807221, 1998 - arxiv.org
We discuss some of the problems that may occur in the calculation of complicated Feynman
diagrams. These include the group independent evaluation of color factors, and the …
diagrams. These include the group independent evaluation of color factors, and the …
A generalized helicity method for Feynman diagram calculations
P Kessler - Nuclear Physics B, 1970 - Elsevier
A GENERALIZED HELICITY METHOD FOR FEYNMAN DIAGRAM CALCULATIONS Page 1 ~
Nuclear Physics B15 (1970)253-266. North-Holland Publ. Comp., Amsterdam A GENERALIZED …
Nuclear Physics B15 (1970)253-266. North-Holland Publ. Comp., Amsterdam A GENERALIZED …
Twistor diagrams
A Hodges, S Huggett - Surveys in High Energy Physics, 1980 - Taylor & Francis
Twistor diagrams Page 1 Surveys in High Energy Physics Volume l(41, August 1980, pp.
333-353 01980 harwood academic publishers gmbh Printed in the United States of America 01 …
333-353 01980 harwood academic publishers gmbh Printed in the United States of America 01 …
Calculation of Feynman diagrams from their small momentum expansion
J Fleischer, OV Tarasov - Zeitschrift für Physik C Particles and Fields, 1994 - Springer
A new powerful method to calculate Feynman diagrams is proposed. It consists in setting up
a Taylor series expansion in the external momenta squared (in general multivariable). The …
a Taylor series expansion in the external momenta squared (in general multivariable). The …
[CITATION][C] A method for Feynman diagram evaluation
AE Terrano - Physics Letters B, 1980 - Elsevier
f(P_kl)2al(p_k2)2~ 2 [(kl-k2) 2]~l+a2-2+e Page 1 Volume 93B, number 4 PHYSICS
LETTERS 30 June 1980 A METHOD FOR FEYNMAN DIAGRAM EVALUATION ~ Anthony E …
LETTERS 30 June 1980 A METHOD FOR FEYNMAN DIAGRAM EVALUATION ~ Anthony E …