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

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

2011-11-03

arxiv.org/abs/1111.0981v1

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, presented at The XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 10-16, 2011, Sq

Scientific paper

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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