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We present a lattice QCD study of valence parton distribution inside the pionwithin the framework of Large Momentum Effective Theory. We use a mixed actionapproach with 1-HYP smeared valence Wilson clover quarks on 2+1 flavor HISQ seawith the valence quark mass tuned to 300 MeV pion mass. We use $48^3 \times 64$lattice at a fine lattice spacing $a=0.06$ fm for this computation. Werenormalize the quasi-PDF matrix element in the non-perturbative RI-MOM scheme.As a byproduct, we test the validity of 1-loop matching procedure by comparingthe RI-MOM renormalized quasi-PDF matrix element with off-shell quark externalstates as computed in the continuum 1-loop perturbation theory with the latticeresults at $a=0.04$ and 0.06 fm. By applying the RI-MOM to ${\bar{\rm MS}}$one-loop matching, implemented through a fit to phenomenologically motivatedPDFs, we obtain the valence PDF of pion.

Valence parton distribution function of pion from fine lattice