Lifetimes of and baryons
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
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