$B_s$-$\bar{B_s}$ mixing from lattice QCD

Details $B_s$-$\bar{B_s}$ mixing from lattice QCD $B_s$-$\bar{B_s}$ mixing from lattice QCD

2005-05-13

arxiv.org/abs/hep-lat/0505013v1

Physics

High Energy Physics

High Energy Physics - Lattice

talk given at the Electroweak session of Moriond 2005

Scientific paper

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
$\hat{B}^{\bar{\rm MS},{\rm NLO}}_{B_s}(m_b)=0.940(16)(22)$.

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