The Nucleon axial charge in full lattice QCD

The Nucleon axial charge in full lattice QCD

The nucleon axial charge is calculated as a function of the pion mass in full QCD. Using domain wall valence quarks and improved staggered sea quarks, we present the first calculation with pion masses as light as 354 MeV and volumes as large as (3.5 fm)^3. We show that finite volume effects are smal...

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Hauptverfasser: Edwards, R. G., Fleming, G. T., Hagler, Ph, Negele, J. W., Orginos, K., Pochinsky, A. V., Renner, D. B., Richards, D. G., Schroers, W.
Format: Report
Sprache:eng
Schlagworte:
charge: axial
fermion: domain wall
fermion: lattice field theory
fermion: staggered
gauge field theory: SU
nucleon: charge
numerical calculations: Monte Carlo
pi: mass
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Beschreibung
Zusammenfassung:The nucleon axial charge is calculated as a function of the pion mass in full QCD. Using domain wall valence quarks and improved staggered sea quarks, we present the first calculation with pion masses as light as 354 MeV and volumes as large as (3.5 fm)^3. We show that finite volume effects are small for our volumes and that a constrained fit based on finite volume chiral perturbation theory agrees with experiment within 7% statistical errors.
ISSN:0031-9007
1092-0145
1079-7114
DOI:10.3204/pubdb-2017-07502