Speaker
Description
We present a lattice QCD analysis of unpolarised generalised parton distributions (GPDs) of the proton. Our calculations are done on the B64 ensemble, with
Nf = 2 + 1 + 1 (degenerate light quarks, strange and charm quarks) twisted
mass fermions at physical mass with a clover improvement and lattice spacing
a = 0.08 fm. We use Large Momentum Effective Theory (LaMET) to anlayse
and match the quasi-GPDs to their light-cone distributions in the asymmetric kinematic frame. Our analysis has been performed with several values of the momentum transfer −t, from 0 to 1.2 at zero-skewness and boost up until 1.7 GeV, with Bayesian-Fourier transform employed to extract the x-dependence. We use the quasi-GPDs to define the pseudo-GPDs in order to extract the Mellin moments.