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Article overview
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Infrared enhanced analytic coupling and chiral symmetry breaking in QCD | A.C. Aguilar
; A.V. Nesterenko
; J. Papavassiliou
; | Date: |
21 Apr 2005 | Journal: | J.Phys. G31 (2005) 997 DOI: 10.1088/0954-3899/31/9/002 | Subject: | hep-ph hep-th | Abstract: | We study the impact on chiral symmetry breaking of a recently developed model for the QCD analytic invariant charge. This charge contains no adjustable parameters, other than the QCD mass scale $Lambda$, and embodies asymptotic freedom and infrared enhancement into a single expression. Its incorporation into the standard form of the quark gap equation gives rise to solutions for the dynamically generated mass that display a singular confining behaviour at the origin. Using the Pagels-Stokar method we relate the obtained solutions to the pion decay constant $f_{pi}$, and estimate the scale parameter $Lambda$, in the presence of four active quarks, to be about 880 MeV. | Source: | arXiv, hep-ph/0504195 | Services: | Forum | Review | PDF | Favorites |
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