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Sep 24 – 29, 2023
US/Eastern timezone

Lattice QCD calculation of the pion generalized parton distributions (GPDs)

Sep 27, 2023, 11:44 AM
18m
Meeting Room 3-4 (Durham Convention Center)

Meeting Room 3-4

Durham Convention Center

Talk 3D Structure of the Nucleon: GPDs and Form Factors 3D Structure of the Nucleon: GPDs and Form Factors

Speaker

Qi Shi (Brookhaven Nation Laboratory)

Description

We present a Lattice QCD calculation of the generalized parton distributions (GPDs) for the pion. Focusing on the zero skewness, we obtain the matrix elements from both symmetric and asymmetric kinematic frames with the recently proposed Lorentz-invariant definition. The calculations are performed using a single ensemble of $N_f=2+1$ highly-improved staggered quarks with $m_\pi = 300$ MeV and a lattice spacing $a=0.04$ fm. We extract the first few Mellin moments of GPDs using the ratio-scheme renormalization with the short distance factorization (SDF). Additionally, we also use a hybrid-scheme renormalization with perturbative matching to obtain the light-cone GPDs.

Primary author

Qi Shi (Brookhaven Nation Laboratory)

Presentation materials