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Paper detail

An Investigation of the Soft Pion Relation in Quenched Lattice QCD

A lattice determination of the form factor and decay constants for the semileptonic decay of heavy pseudoscalar (PS) mesons at zero recoil is presented from which the soft pion relation is satisfied. Chiral extrapolation of the form factor is performed at constant $q^2$. Pole dominance is used to extrapolate the form factor in heavy quark mass. At the B mass, the form factor at zero recoil lies somewhat below the ratio of decay constants; the relation remains satisfied within error.

preprint1999arXivOpen access
UKQCD collaborationK. C. BowlerC. M. MaynardL. LellouchJ. NievesD. G. RichardsL. Del DebbioJ. M. FlynnV. I. Lesk
hep-lat
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Open access9 authors1 topic
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UKQCD collaborationK. C. BowlerC. M. MaynardL. LellouchJ. NievesD. G. RichardsL. Del DebbioJ. M. FlynnV. I. Lesk

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