Final state interaction effects on the eta(b) => J/psi J/psi decay

TL;DR

This paper investigates how final state interactions, specifically rescattering processes, can significantly enhance the decay rate of eta(b) into J/psi J/psi, potentially increasing the branching ratio by up to two orders of magnitude.

Contribution

It introduces a detailed analysis of rescattering effects in eta(b) decay, highlighting their substantial impact on the decay's branching ratio.

Findings

Rescattering can enhance the branching ratio by up to 100 times.

Final state interactions are crucial for accurate decay rate predictions.

The study emphasizes the importance of considering rescattering in decay processes.

Abstract

We study the effects of final state interactions on the eta(b) => J/psi J/psi decay. In particular, we discuss the effects of the annihilation of eta(b) into two charmed meson and their rescattering into J/psi J/psi. We find that the inclusion of this contribution may enhance the short-distance branching ratio up to about 2 orders of magnitude.