Axial couplings of heavy hadrons from domain-wall lattice QCD

Conference · Thu Dec 01 00:00:00 EST 2011 · PoS(Lattice 2011)

OSTI ID:1043048

W. Detmold, C.J.D. Lin, S. Meinel

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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1043048
• Report Number(s): JLAB-THY-12-1549; DOE/OR/23177-2188; TRN: US1202998
• Journal Information: PoS(Lattice 2011), Conference: Lattice 2011 - The 29th International Symposium on Lattice Field Theory, July 11-16, 2011, Lake Tahoe, CA
• Country of Publication: United States
• Language: English

Related Subjects

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