Standard Model predictions for B -> Kll with form factors from lattice QCD

Chris Bouchard, G. Peter Lepage, Christopher Monahan +2

We calculate, for the first time using unquenched lattice QCD form factors, the Standard Model differential branching fractions $dB/d{q}^2(B\to Kll)$ for $l=e,\mu ,\tau$ and compare wit…