Speaker
Description
A more recent approach to light-front wave functions (LFWF) of hadrons consists, in the case of mesons, of projecting their Bethe-Salpeter wave functions on the light front. The latter is obtained within a functional approach to QCD, solving first the quark gap equation within a chiral-symmetry preserving truncation scheme and then the Bethe-Salpeter equation for pseudoscalar and vector mesons. With the LFWF we derive the meson’s parton distribution amplitude (PDA), parton distribution function (PDF) and transverse momentum distribution (TMD) for light mesons, $D$ and $B$ mesons, as well as quarkonia. Last not least, I will present recent progress on the calculation of elementary quark-fragmentation functions and their generalization to jet functions.
