Friday, January 18, 2013

1301.4057 (A. C. Aguilar et al.)

Nonperturbative results on the quark-gluon vertex    [PDF]

A. C. Aguilar, D. Binosi, J. C. Cardona, J. Papavassiliou
We present analytical and numerical results for the Dirac form factor of the quark-gluon vertex in the quark symmetric limit, where the incoming and outgoing quark momenta have the same magnitude but opposite sign. To accomplish this, we compute the relevant components of the quark-ghost scattering kernel at the one-loop dressed approximation, using as basic ingredients the full quark propagator, obtained as a solution of the quark gap equation, and the gluon propagator and ghost dressing function, obtained from large-volume lattice simulations.
View original: http://arxiv.org/abs/1301.4057

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