Laser-assisted kaon decay and CPT symmetry violation

TL;DR

This study explores how a circularly polarized laser field affects charged kaon decay processes and the associated CPT symmetry, revealing potential control over matter-antimatter dominance through external electromagnetic fields.

Contribution

The paper derives decay parameters for kaons in a laser field and analyzes the laser's impact on CPT symmetry, offering insights into external control of matter-antimatter asymmetry.

Findings

Laser field modifies kaon decay widths and lifetimes.

External electromagnetic fields can influence CPT symmetry parameters.

Matter-antimatter dominance can be controlled via laser-induced CPT symmetry violation.

Abstract

In this paper, we have investigated the charged kaons decay at the lowest order in the presence of a circularly polarized laser field. To be more precise, we have examined the leptonic decay of both positive (matter) and negative (antimatter) kaon which weakly decay via the exchange of $W$ boson. Indeed, we have derived the expression of the leptonic decay width, the leptonic branching ratio, the leptonic ratio and the charged kaon lifetime by using the decay matrix approach. In addition, by using numerical computation, we have presented and discussed how the laser field influences these physical quantities. Moreover, we have analyzed the effect of the laser field on the parameter associated with the CPT symmetry. Then, we have concluded that, in the presence of an electromagnetic field and based on this CPT symmetry parameter, it is possible to control the dominance of matter over antimatter or vice-versa by applying an external field to either violate or conserve the CPT symmetry.