Baryon semi-leptonic decay from lattice QCD with domain wall fermions
Abstract
We will present preliminary results of (i) iso-vector vector/axial-vector
form factors of the nucleon and also (ii) hyperon beta decay, in quenched
lattice calculation with domain wall fermions. First of all, we discuss
about finite volume effect on semi-leptonic decay form factors, especially
for neutron beta decay. Later we report our new attempt to investigate the
SU(3) breaking effect on hyperon beta decay. We are especially interested
in Xi^0 -> Sigma^+ decay channel, which is the direct analogue of neutron
beta decay under an exchange between down quark and strange quark.
Shoichi Sasaki
Last modified: Wed Mar 15 22:10:07 JST 2006