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Title: Axial couplings of heavy hadrons from domain-wall lattice QCD

We calculate matrix elements of the axial current for static-light mesons and baryons in lattice QCD with dynamical domain wall fermions. We use partially quenched heavy hadron chiral perturbation theory in a finite volume to extract the axial couplings g{sub 1}, g{sub 2}, and g{sub 3} from the data. These axial couplings allow the prediction of strong decay rates and enter chiral extrapolations of most lattice results in the b sector. Our calculations are performed with two lattice spacings and with pion masses down to 227 MeV.
Authors:
Publication Date:
OSTI Identifier:
1043048
Report Number(s):
JLAB-THY-12-1549; DOE/OR/23177-2188
TRN: US1202998
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: PoS(Lattice 2011); Conference: Lattice 2011 - The 29th International Symposium on Lattice Field Theory, July 11-16, 2011, Lake Tahoe, CA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BARYONS; DECAY; FERMIONS; FORECASTING; HADRONS; LATTICE FIELD THEORY; MATRIX ELEMENTS; MESONS; PERTURBATION THEORY; PIONS; QUANTUM CHROMODYNAMICS