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Form factors for B to Kll semileptonic decay from three-flavor lattice QCD

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arxiv 1111.0981 v1 pith:3ISPG5UN submitted 2011-11-03 hep-lat hep-exhep-ph

Form factors for B to Kll semileptonic decay from three-flavor lattice QCD

Ran Zhou , Jon A. Bailey , Alexei Bazavov , Aida X. El-Khadra , Steven Gottlieb , Rajendra D. Jain , Andreas S. Kronfeld , Ruth S. Van de Water
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Fermilab Lattice MILC Collaborations
This is my paper
classification hep-lat hep-exhep-ph
keywords latticeactiondecayfactorsformsemileptonicstaggeredthree-flavor
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the $B \to Kl^+l^-$ semileptonic decay process in three-flavor lattice QCD. We analyze several ensembles generated by the MILC collaboration at different lattice spacings and sea-quark masses. We use the asqtad improved staggered action for the light quarks and the clover action with the Fermilab interpretation for the heavy $b$ quark. We present preliminary results for the vector current induced form factors for a range of kaon energies. Our analysis includes chiral and continuum extrapolations based on SU(2) staggered \chi PT.

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