Jul 26 – 30, 2021
US/Eastern timezone

Double parton distributions in the nucleon from lattice simulations

Jul 28, 2021, 5:15 AM
15m
Oral presentation Hadron Structure Hadron Structure

Speaker

Christian Zimmermann (University of Regensburg)

Description

We provide a first study of Mellin moments of double parton distributions (DPDs) in the nucleon on the lattice, where we consider several combinations of quark flavors and polarizations. These are accessible through two-current correlations, which can be obtained by evaluating four-point functions. In this context we consider all possible Wick contractions, where for almost all of them sufficiently clear signals are obtained. In the present study, we employ an $n_f = 2 + 1$ CLS ensemble on a $96 \times 32^3$ lattice with lattice spacing $a = 0.0856\ \mathrm{fm}$ and the pseudoscalar masses $m_\pi = 355\ \mathrm{MeV}$ and $m_K = 441\ \mathrm{MeV}$.

Primary author

Christian Zimmermann (University of Regensburg)

Presentation materials