Feasibility study for a search for τ→μ+γ decay at Super c−τ factory

Abstract A Monte Carlo study of possible background processes in a search for τ → μ γ decay has been performed for conditions of the Super c − τ factory (SCTF) at a center-of-mass energy 3.686 GeV, 3.77 GeV and 4.17 GeV. The background from τ + τ − events has been analysed. Selection criteria for background suppression are suggested and necessary requirements on the detector characteristics have been found. A possible upper limit for B τ → μ γ at SCTF is about ( 1.5 ÷ 2.5 ) × 10 − 10 . The SCTF can successfully compete with the Super B-factory in a search for τ → μ γ decay.