Asymptotic freedom, light quarks and the origin of the ∆T = {1}/{2} rule in the nonleptonic decays of strange particles
Abstract
A dynamical mechanism for the ∆T = {1}/{2} rule in the nonleptonic decays of strange particles is considered. The weak interactions are described within the WeinbergSalam model while the strong interactions are assumed to be mediated by the exchange of an octet of colour vector gluons. It is shown that the effect of the strong interactions gives rise to new operators in the effective Hamiltonian of weak interactions which contain both left and righthanded fermions. These operators satisfy the ∆T = {1}/{2} rule, and estimates within the relativistic quark model indicate that their contribution dominates the physical amplitudes of the K → 2 π, 3 π decays.
 Publication:

Nuclear Physics B
 Pub Date:
 March 1977
 DOI:
 10.1016/05503213(77)900463
 Bibcode:
 1977NuPhB.120..316S