arXiv:hep-lat/9709028·v1·High Energy Physics — Lattice
First Lattice Study of Semileptonic Decays of Lambda_b and Xi_b Baryons
UKQCD Collaboration · K.C. Bowler · R.D. Kenway · L. Lellouch · J. Nieves · O. Oliveira · D.G. Richards · C.T. Sachrajda · N. Stella · P. Ueberholz
Abstract
We present the results of the first lattice study of semileptonic decays of baryons containing a b-quark. Predictions for the decay distributions are given and the Isgur-Wise functions for heavy baryons are computed, for values of the velocity transfer up to about omega=1.2. The computations are performed on a 24^3 x 48 lattice at beta=6.2 using the Sheikholeslami-Wohlert action in the quenched approximation.
Comments: 55 pages, 17 ps figures, Latex 2.09, uses epsf