Semileptonic decays $B\rightarrow D^{(*)}l\nu$ at nonzero recoil

Si-Wei Qiu; Carleton DeTar; Aida X. El-Khadra; Andreas S. Kronfeld; Jack Laiho; Ruth S. Van de Water

Semileptonic decays $B\rightarrow D^{(*)}l\nu$ at nonzero recoil

High Energy Physics - Lattice 2013-12-03 v1

Authors: Si-Wei Qiu , Carleton DeTar , Aida X. El-Khadra , Andreas S. Kronfeld , Jack Laiho , Ruth S. Van de Water

Abstract

We have analyzed the semileptonic decays $B\rightarrow D\ell\nu$ and $B\rightarrow D^*\ell\nu$ on the full suite of MILC (2+1)-flavor asqtad ensembles with lattice spacings as small as 0.045 fm and light-to-strange-quark mass ratios as low as 1/20. We use the Fermilab interpretation of the clover action for heavy valence quarks and the asqtad action for light valence quarks. We compute the hadronic form factors for $B\rightarrow D$ at both zero and nonzero recoil and for $B\rightarrow D^*$ at zero recoil. We report our results for $|V_{cb}|$ .

Keywords

semileptonic decays lattice QCD heavy quarks form factors CKM matrix MILC ensembles nonzero recoil

Cite

@article{arxiv.1312.0155,
  title  = {Semileptonic decays $B\rightarrow D^{(*)}l\nu$ at nonzero recoil},
  author = {Si-Wei Qiu and Carleton DeTar and Aida X. El-Khadra and Andreas S. Kronfeld and Jack Laiho and Ruth S. Van de Water},
  journal= {arXiv preprint arXiv:1312.0155},
  year   = {2013}
}

Comments

7 pp, 4 figures, Lattice 2013

Semileptonic decays $B\rightarrow D^{(*)}l\nu$ at nonzero recoil

Abstract

Keywords

Cite

Comments

Related papers