Eur. Phys. J. C (2016) 76: 421
https://doi.org/10.1140/epjc/s10052-016-4251-1

Regular Article - Theoretical Physics

Searching for lepton-flavor-violating decay at super Charm-Tau factory

¹ Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China
² Department of Physics, Chongqing University, Chongqing, 401331, People’s Republic of China

^* e-mail: zhangry@ustc.edu.cn

Received: 21 February 2016
Accepted: 8 July 2016
Published online: 28 July 2016

Abstract

We investigate the possibility of searching the lepton-flavor-violating (LFV) rare decay at the Super Charm-Tau Factory (CTF). By comparing the kinematic distributions of the LFV signal and the standard model background, we develop an optimized event selection criterion which can significantly reduce the background events. It is concluded that the new upper limit of about on can be obtained at the CTF, which is beyond the capability of Super-B factory in searching lepton rare decay. Within the framework of the scalar leptoquark model, a joint constraint on and can be derived from the upper bound on . With data expected at the CTF, we get and at confidence level.