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arXiv · 1203.3600

Axial couplings of heavy hadrons from domain-wall lattice QCD

William Detmold·C. -J. David Lin·Stefan Meinel
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Abstract

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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William Detmold, C. -J. David Lin, Stefan Meinel. 2012-03-16. Axial couplings of heavy hadrons from domain-wall lattice QCD. https://arxiv.org/abs/1203.3600

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