Applications of the Nambu--Jona-Lasinio model to the partonic structure of the pion

Abstract

We present a brief review of results of chiral quark models for soft matrix elements in the pion state, appearing in high-energy processes as well as accessible in present and future lattice studies. A particular attention is paid to the recently explored double parton distribution functions of the pion.

Comments: 9 pages, talk presented by WB at The 40th Max Born Symposium - Three Days on Strong Correlations in Dense Matter, 9-12 October 2019, Wrocł{}aw, Poland, dedicated to David Blaschke on the occasion of his 60th birthday