Weak Kaon Production off the nucleon and Watson's theorem

TL;DR

This paper enhances a model for weak kaon production off nucleons by incorporating unitarity through Watson's theorem, analyzing the impact on observable outcomes.

Contribution

It introduces a method to partially restore unitarity in a tree-level model for weak kaon production by applying Watson's theorem to key contributions.

Findings

Improved model aligns better with unitarity principles.

Observable predictions are affected by the unitarity restoration.

Method provides a more consistent theoretical framework.

Abstract

We have improved the tree-level model of Ref arXiv:1004.5484 [hep-ph] for weak production of kaons off nucleons by partially restoring unitarity. This is achieved by imposing Watson's theorem to the dominant vector and axial-vector contributions in appropriate angular momentum and isospin quantum number sectors. The observable consequences of this procedure are investigated.