Speaker
Joshua Miller
Description
The $x$-dependence of GPDs is still relatively unknown, but recent developments from lattice QCD with a new approach (PRD 106 (2022) 11, 114512) produce promising results from matrix elements calculated from any kinematic frame. Traditionally, GPDs are calculated in the symmetric frame, where the momentum transfer is evenly split between the initial and final states. In this talk, we present the first twist-2 GPDs for the tensor operator in the asymmetric frame; $H_T$, $\widetilde{H}_T$, $E_T$, $\widetilde{E}_T$. The calculation uses an $N_f = 2+1+1$ ensemble of twisted mass fermions with a clover improvement. The quarks mass values give a pion mass of roughly 260 MeV.
