DOI 10.1007/s100520000433
Lifetimes of
and
baryons
V.V. Kiselev - A.K. Likhoded - A.I. Onishchenko
State Research Center of Russia "Institute for High Energy
Physics'', Protvino, 142284 Moscow region, Russia
Received: 3 June 1999 / Published online: 6 July 2000 - © Springer-Verlag 2000
Abstract
Estimates of the lifetimes and partial branching ratios for the
baryons
and
are presented using the inverse heavy quark mass
expansion
technique carried out in the operator product expansion approach.
We take into account both the perturbative QCD corrections to
the
spectator contributions and, depending on the
quark contents of the hadrons, Pauli interference and weak
scattering
effects between the constituents, using a potential model for
the
evaluation of the non-perturbative parameters.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
