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Apr 13 – 16, 2021
US/Eastern timezone

Strategies and systematics for the extraction of nucleon charges from lattice QCD

Apr 13, 2021, 4:30 PM
20m
Oral Presentation Baryon Structure

Speaker

Jason Chang (RIKEN/LBNL)

Description

Calculations of nucleon structure using lattice QCD are approaching the level of precision necessary to make important impacts on experimental programs. This talk will explore multiple theoretical approaches to calculations of the nucleon axial charge. We present numerical evidence and show that the various approaches have significantly different dependence on excited-state, yielding to ground-state plateaus that are observed to be multiple fm closer to the source location. Additionally, the results further provides evidence supporting the notion that lattice QCD calculations are able to keep excited-state contamination for nucleon correlation functions under control by demonstrating consistency in ground state observables from the different approaches presented today.

Primary author

Jason Chang (RIKEN/LBNL)

Presentation materials