Search for $\tau\to\mu+\gamma$ decay at Super $c -\tau$ factory

TL;DR

This study evaluates the potential of the Super c-tau factory to detect the rare decay tau to mu gamma by analyzing background processes and proposing selection criteria, demonstrating its competitiveness with Super B-factory.

Contribution

It provides a Monte Carlo analysis of background suppression strategies and detector requirements for tau to mu gamma decay search at the Super c-tau factory, a novel assessment for this facility.

Findings

Background processes from tau pair events can be effectively suppressed.

Necessary detector characteristics for successful decay search are identified.

Super c-tau factory can compete with Super B-factory in tau to mu gamma decay detection.

Abstract

A Monte Carlo study of possible background processes in a search for $\tau \to \mu \gamma$ decay has been performed for conditions of the Super $c-\tau$ factory (CTF) (at a center-of-mass energy 3.686 GeV, 3.77 GeV and 4.17 GeV). The background from $\tau^{+}\tau^{-}$ events has been analysed. Selection criteria for background suppression are suggested and necessary requirements on the detector characteristics have been found. The CTF can successfully compete with the Super B-factory in a search for $\tau \to \mu \gamma$ decay.