The Quantum Field Theory of the Kaon Oscillations
arXiv:hep-ph/9712480 · doi:10.1007/BF03035877
Abstract
We consider the covariant formulation of the kaon mixing in the context of the propagator method. It results important to check the possibility of a sizable effect in the vacuum regeneration of kaons. We discuss all those terms which may give relevant contributions to modify the exponential decay law of the Wigner-Weisskopf narrow width approximation. Moreover, we examine the characteristic structure of the complex singularities of the matrix propagator and we provide a generalized form of the Bell-Steinberger unitarity sum rule.
19 pages, Plain TeX + eps latex file with 2 figures