The nucleon axial charge in full lattice QCD

Journal Article · Thu Oct 13 00:00:00 EDT 2005

OSTI ID:850567

Edwards, Robert; Fleming, George; Hagler, P; Negele, John; Orginos, Konstantinos; Pochinsky, Andrew; Renner, Dru; Richards, David; Schroers, Wolfram

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 5% statistical errors.

• Research Organization: TJNAF (Thomas Jefferson National Accelerator Facility, Newport News, VA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 850567
• Report Number(s): JLAB-THY-05-433; DOE/ER/40150-3614
• Country of Publication: United States
• Language: English