Nucleon Axial Charge in Full Lattice QCD

Journal Article · Fri Feb 10 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.052001· OSTI ID:20777016

Edwards, R G; Richards, D G ^[1]; Fleming, G T ^[2]; Haegler, Ph ^[3]; Negele, J W; Pochinsky, A V ^[4]; Orginos, K ^[1]; Renner, D B ^[5]; Schroers, W ^[6]

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1. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)
2. Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520 (United States)
3. Department of Physics and Astronomy, Vrije Universiteit, 1081 HV Amsterdam (Netherlands)
4. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
5. Department of Physics, University of Arizona, 1118 East 4th Street, Tucson, Arizona 85721 (United States)
6. John von Neumann-Institut fuer Computing NIC/DESY, D-15738 Zeuthen (Germany)

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){sup 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.

• OSTI ID: 20777016
• Journal Information: Physical Review Letters, Vol. 96, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.96.052001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
ERRORS
LATTICE FIELD THEORY
MASS
MEV RANGE 100-1000
NUCLEONS
PERTURBATION THEORY
PIONS
QUANTUM CHROMODYNAMICS
QUARKS
VALENCE