Domain wall fermion calculation of nucleon G{sub A}/G{sub V}

Conference · Thu Aug 17 00:00:00 EDT 2000

OSTI ID:774484

Blum, T; Ohta, S; Sasaki, S

The authors present a preliminary domain-wall fermion lattice-QCD calculation of isovector vector and axial charges, g{sub V} and g{sub A}, of the nucleon. Since the lattice renormalizations, Z{sub V} and Z{sub A}, of the currents are identical with DWF, the lattice ratio (g{sub A}/g{sub V}){sup lattice} directly yields the continuum value. Indeed Z{sub V} determined from the matrix element of the vector current agrees closely with Z{sub A} from a non-perturbative renormalization study of quark bilinears. They also obtain spin related quantities {Delta}q/g{sub V} and {delta}q/g{sub V}.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: RIKEN AND BNL (US)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 774484
• Report Number(s): BNL-67855; KB0201; R&D Project: PO03; KB0201; TRN: US0100900
• Resource Relation: Conference: 18th International Symposium on Lattice Field Theory Lattice 2000, Bangalore (IN), 08/17/2000--08/22/2000; Other Information: PBD: 17 Aug 2000
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMIONS
ISOVECTORS
LATTICE FIELD THEORY
MATRIX ELEMENTS
NUCLEONS
QUARKS
RENORMALIZATION
SPIN
VECTOR CURRENTS
VECTORS