Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

Leading-twist Quark PDFs of the Nucleon from Ioffe-time Pseudo-distributions

Aug 10, 2022, 5:30 PM
20m
CP1-HSZ/Ground-0.010 - HS2 (CP1-HSZ)

CP1-HSZ/Ground-0.010 - HS2

CP1-HSZ

450
Oral Presentation Hadron Structure Hadron Structure

Speaker

Colin Egerer (Jefferson Lab)

Description

The Parton Distribution Functions (PDFs) encode the non-perturbative collinear dynamics of a hadron probed in inclusive and semi-inclusive scattering processes, and hence provide an avenue to address a number of key questions surrounding the structure of hadrons. This talk will summarize recent efforts of the HadStruc Collaboration to map out the leading-twist quark PDFs of the nucleon using Lattice QCD. This effort hinges on the computation of matrix elements of space-like parton bilinears, which factorize, akin to the QCD collinear factorization of hadronic cross sections, in a short-distance regime into the desired PDFs - ideas codified within the pseudo-distribution formalism. By exploiting the distillation spatial smearing paradigm, matrix elements of sufficient statistical quality are obtained such that the leading-twist PDFs and various systematic effects can be simultaneously quantified. Consistency of our obtained PDFs with phenomenological expectations is also explored.

Primary authors

Anatoly Radyushkin (ODU and JLAB) Christopher Monahan (William & Mary) Colin Egerer (Jefferson Lab) David Richards (JLAB) Eloy Romero (Thomas Jefferson National Accelerator Facility) Joseph Karpie Kostas Orginos (JLAB and William & Mary) Nikhil Karthik (JLAB) Raza Sufian (William & Mary / Jefferson Lab) Robert Edwards (Jefferson Lab) Savvas Zafeiropoulos (CNRS and Aix Marseille University) Wayne Morris (Old Dominion University)

Presentation materials