# BaBar

## B→Dℓν form factors at nonzero recoil and textbarV$_b̧$textbar from 2+1-flavor lattice QCD

We present the first unquenched lattice-QCD calculation of the hadronic form factors for the exclusive decay B¯→Dℓν¯ at nonzero recoil. We carry out numerical simulations on 14 ensembles of gauge-field configurations generated with 2+1 flavors of …

## $textbarV_ubtextbar$ from $Btopiellnu$ decays and (2+1)-flavor lattice QCD

We present a lattice-QCD calculation of the B→πℓν semileptonic form factors and a new determination of the CKM matrix element textbarVubtextbar. We use the MILC asqtad (2+1)-flavor lattice configurations at four lattice spacings and light-quark …

## Refining new-physics searches in $B -textgreater D tau nu$ decay with lattice QCD

The semileptonic decay channel B -textgreater D tau nu is sensitive to the presence of a scalar current, such as that mediated by a charged-Higgs boson. Recently the BaBar experiment reported the first observation of the exclusive semileptonic decay …