Speaker
Bailing Ma
(Argonne National Lab)
Description
We present an update on the calculation of nucleon quark distribution functions using a confining Nambu-Jona-Lasinio (NJL) model. Originally developed for nucleons, the NJL model is now seen as an effective theory of low-energy QCD that is based on quark degrees of freedom. The nucleon bound state is obtained by solving the Faddeev equation in the quark–diquark approximation, where we include not only the scalar and axial vector diquark channels but also the pseudoscalar and vector diquarks. We present the results of our calculations for the unpolarized and polarized quark light-front momentum distribution functions and compare them to the available empirical parametrizations.
Primary author
Bailing Ma
(Argonne National Lab)
