Callan-Symanzik equation and asymptotic behavior in field theory: form factors
- 15 January 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 9 (2) , 386-399
- https://doi.org/10.1103/physrevd.9.386
Abstract
We show that even for some external lines on the mass shell, the procedure of dropping the mass-insertion term in the Callan-Symanzik equation is justified for the form factor at high squared momentum transfer in a certain class of models. This provides a very quick method of summing leading contributions in perturbation theory, as well as summing the next-to-leading terms.Keywords
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