B_s-\bar{B_s} mixing with a chiral light quark action

D. Becirevic; B. Blossier; Ph. Boucaud; J. P. Leroy; A. Le Yaouanc; O. Pene

B_s-\bar{B_s} mixing with a chiral light quark action

High Energy Physics - Lattice 2010-03-19 v1

Authors: D. Becirevic , B. Blossier , Ph. Boucaud , J. P. Leroy , A. Le Yaouanc , O. Pene

Abstract

We study the $B^0_s-\bar{B^0_s}$ mixing amplitude in Standard Model by computing the relevant hadronic matrix element in the static limit of lattice HQET with the Neuberger light quark action. In the quenched approximation, and after matching to the $\bar{\rm MS}$ scheme in QCD, we obtain $B^{\bar{\rm MS}}_{B_s}(m_b)=0.940(16)(22)$ .

Keywords

B_s mixing heavy quark effective theory Neuberger fermions chiral symmetry hadronic matrix element quenched approximation

Cite

@article{arxiv.hep-lat/0509165,
  title  = {B_s-\bar{B_s} mixing with a chiral light quark action},
  author = {D. Becirevic and B. Blossier and Ph. Boucaud and J. P. Leroy and A. Le Yaouanc and O. Pene},
  journal= {arXiv preprint arXiv:hep-lat/0509165},
  year   = {2010}
}

Comments

6 pages, 3 figures, talk presented at Lattice 2005 (Heavy quark physics)

Related papers

View all related →