Semileptonic Form Factor ratio B_s->D_s/B->D and Its Application to BR(B^0_s->\mu^+\mu^-)
Description:
We present a (2+1)-flavor lattice QCD calculation of the form factor ratio between the semileptonic decays {bar B}{sub s}{sup 0} {yields} D{sub s}{sup +}l{sup -}{bar {nu}} and {bar B}{sup 0} {yields} D{sup +}l{sup -}{bar {nu}}. This ratio is an important theoretical input to the hadronic determination of the B meson fragmentation fraction ratio f{sub s}/f{sub d} which enters in the measurement of BR(B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -}). Small lattice spacings and high statistics ena…
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Date:
November 1, 2011
Creator:
Du, Daping; DeTar, Carleton; Kronfeld, Andreas; Laiho, Jack; Meurice, Yannick & Qiu, Si-wei
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