Freezing of the QCD coupling constant and solutions of Schwinger-Dyson equations
Abstract
We compare phenomenological values of the frozen QCD running coupling constant (alpha(s)) with two classes of infrared finite solutions obtained through nonperturbative Schwinger-Dyson equations. We use these same solutions with frozen coupling constants as well as their respective nonperturbative gluon propagators to compute the QCD prediction for the asymptotic pion form factor. Agreement between theory and experiment on alpha(s)(0) and F (pi)(Q(2)) is found only for one of the Schwinger-Dyson equation solutions.
How to cite this document
Aguilar, A. C.; Mihara, A.; Natale, A. A.. Freezing of the QCD coupling constant and solutions of Schwinger-Dyson equations. Physical Review D. College Pk: American Physical Soc, v. 65, n. 5, 6 p., 2002. Available at: <http://hdl.handle.net/11449/23655>.
Language
English
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