A lattice calculation of B -> K(*) form factors
  Lattice QCD can contribute to the search for new physics in b -> s decays by providing first-principle calculations of B -> K(*) form factors. Preliminary results are presented here which complement sum rule determinations by being done at large q^2 and which improve upon previous lattice calculations by working directly in the physical b sector on unquenched gauge field configurations. 
Zhaofeng Liu, Stefan Meinel, Alistair Hart, Ron R. Horgan, Eike H.   M\"uller, Matthew Wingate
hep-ph hep-lat