Speaker
Joseph Torsiello
(Temple University)
Description
We present a calculation of the $x$ dependence of unpolarized quark GPDs for the pion and kaon on an $N_f=2+1+1$ ensemble of maximally twisted-mass fermions with a clover term, with lattice volume $32^3\times64$, lattice spacing $a=0.0934$ fm, and pion mass $m_\pi=260$ MeV. The matrix elements contain boosted hadrons coupled to nonlocal operators and are computed for momentum boosts up to 2 GeV and momentum-transfer square up to about 2.5 GeV$^2$. The data are analyzed using both the large-momentum effective theory and short-distance factorization frameworks, providing complementary information. We investigate the dependence of the results on the hadron momentum, momentum transfer, and reconstruction procedure.
Authors
Joseph Torsiello
(Temple University)
Minhuan Chu
(Adam Mickiewicz University)
Krzysztof Cichy
Prof.
Martha Constantinou
Joshua Miller