Low-energy electron-positron collider to search and study (\mu^+\mu^-) bound state

TL;DR

This paper proposes a low-energy electron-positron collider designed to produce and study the dimuonium bound state, with a focus on background suppression and collider design to enable new particle physics investigations.

Contribution

It introduces a novel collider design with a large crossing angle to produce dimuonium and suppress background, along with preliminary layout and parameters for experimental study.

Findings

Collider design with large crossing angle effectively suppresses background.

Preliminary layout and parameters for the collider are provided.

High luminosity enables study of mesons like π and η.

Abstract

We discuss a low energy $e^+e^-$ collider for production of the not yet observed ($\mu^+\mu^-$) bound system (dimuonium). Collider with large crossing angle for $e^+e^-$ beams intersection produces dimuonium with non-zero momentum, therefore, its decay point is shifted from the beam collision area providing effective suppression of the elastic $e^+e^-$ scattering background. The experimental constraints define subsequent collider specifications. We show preliminary layout of the accelerator and obtained main parameters. High luminosity in chosen beam energy range allows to study $\pi^\pm$ and $\eta$ -mesons.