Zitterbewegung CP violation in a Schwarzschild spacetime

Abstract

Neutral kaons oscillations in a Schwarzschild spacetime are analyzed. The interplay between two oscillations: (i) mixing associated with second order weak coupling and (ii) strange quark's zitterbewegung, introduces a coupling responsible for the observed CP violation. This curvature induced violation is a CPT violation with T conservation rather than a T violation with CPT conservation. The non-dissipative Hermitian evolution of the kaons system leads to the identification of this CPT violation. Then, the finite lifetime of the short-lived kaons induces a dissipative rotation of the imaginary violation parameter such that it becomes real and appears as a T violation. The consequences of this elucidation of the origin of neutral kaons CP violation are then discussed and some open perspectives are identified.