出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present preliminary results of a first lattice calculation of the form factors for the rare decay
B! K`+`. Hadronic matrix elements are calculated on MILC lattices with 2+1 flavors of sea
quarks. We use the Asqtad action for light quarks and the Fermilab action for the b quark.
