# Exclusive Production Ratio of Neutral over Charged Kaon Pair in $e^+e^-$ Annihilation Continuum via `Straton Model'

## TL;DR

This paper uses a relativistic quark model to calculate the ratio of neutral to charged Kaon pair production in electron-positron annihilation, highlighting the role of valence quark charges.

## Contribution

It introduces a Bethe-Salpeter framework calculation for Kaon pair production ratios, emphasizing the impact of quark charges and diagram cancellations.

## Key findings

- The neutral to charged Kaon production ratio is approximately 1/10.
- Diagram cancellations depend on quark charge configurations.
- Valence quark charge differences significantly influence production ratios.

## Abstract

A completely relativistic quark model in the Bethe-Salpter framework is employed to calculate the exclusive production ratio of the neutral over charged Kaon pair in $e^+e^-$ annihilation continuum region for center of mass energies smaller than the $J/\Psi$ mass. The valence quark charge plays the key r\^{o}le. The cancellation of the diagrams for the same charge case (in $K_S + K_L$) and the non-cancellation of the diagrams for the different charge case (in $K^-+K^+$) lead to the ratio as $(m_s-m_d)^2/M_{Kaon}^2 \sim 1/10$.