Two-Particle Correlations and Meson-Antimeson Mixing Effects

Abstract

We discuss 2-particle correlations which arise in the time evolution of C-odd and C-even meson--antimeson states of flavoured neutral mesons. In order to keep our discussion general, we do not use the Weisskopf -- Wigner approximation. Possible deviations from quantum-mechanical coherence effects are parameterized by a so-called decoherence parameter $\zeta$. In particular, we study the $\zeta$-dependence of the asymmetry of unlike and like-flavoured events which was recently observed experimentally in the $K^0{\bar{K}}^0$ system. In this $\zeta$-dependence, we point out some important general features which do not rely on the Weisskopf -- Wigner approximation. Some other related results are derived more generally than in the literature.

12 pages, revtex, no figures

References in corpus (3)

• Quantum mechanics, Furry's hypothesis and a measure of decoherence in the K^0 \bar{K}^0 system
• How Devious are Deviations From Quantum Mechanics: The Case of the B^0 \bar B^0 System
• Two-Particle Correlations and $B^0{\bar{B}}^0$ Mixing

Cited by in corpus (1)

• A model for decoherence of entangled beauty