Axial couplings of heavy hadrons from domain-wall lattice QCD

Details Axial couplings of heavy hadrons from domain-wall lattice QCD Axial couplings of heavy hadrons from domain-wall lattice QCD

2012-03-16

arxiv.org/abs/1203.3600v1

PoS Lattice2011:166,2011

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 3 figures, talk presented at the XXIX International Symposium on Lattice Field Theory, July 10-16, 2011, Squaw Valley

Scientific paper

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_1, g_2, and g_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.

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