Speaker
Krzysztof Cichy
(Adam Mickiewicz University)
Description
We present a lattice exploration of the isovector flavor combination of the nucleon's twist-3 helicity PDF g_T(x), using twisted mass clover fermions. We employ the quasi-distribution approach at three values of the nucleon boost up to 1.7 GeV to connect the lattice-extracted matrix elements, renormalized in the RI/MOM scheme, to light-cone distributions, applying the matching procedure that we developed in parallel. We also calculate the twist-2 helicity distribution g_1(x) to test the Wandzura-Wilczek approximation for g_T(x) and find that it works well for a broad range of Bjorken-x.
Authors
Shohini Bhattacharya
(Graduate Student)
Krzysztof Cichy
(Adam Mickiewicz University)
Martha Constantinou
(Temple University)
Andreas Metz
(Temple University)
Aurora Scapellato
(Adam Mickiewicz University)
Fernanda Steffens
(University of Bonn)
