Sensitivity study of the charged lepton flavor violating process $\tau \to \gamma \mu$ at STCF

Abstract

A sensitivity study for the search for the charged lepton flavor violating process $\tau \to \gamma \mu$ at the Super $\tau$-Charm Facility is performed with a fast simulation. With the expected performance of the current detector design and an integrated luminosity of \SI{1}{ab^{-1}} corresponding to one-year of data taking, the sensitivity on the branching fraction (BF) of $\tau \to \gamma \mu$ is estimated to be at the level of \num{e-8}. The sensitivity under different detector performances are also studied. With ideal performance, the BF could be probed to be \num{2.8e-8} at \SI{90}{\percent} confidence level. The sensitivity is expected to scale with the square root of the luminosity, therefore with a total luminosity of \SI{10}{ab^{-1}} corresponding to ten-year of data taking, the sensitivity could reach \num{8.8e-9}, which is about one order of magnitude improvement upon the current best upper limit.

References in corpus (17)

• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Limits and Confidence Intervals in the Presence of Nuisance Parameters
• A New Parametrization of the Seesaw Mechanism and Applications in Supersymmetric Models
• Anatomy and Phenomenology of mu-tau Lepton Flavour Violation in the MSSM
• Matching perturbative and Parton Shower corrections to Bhabha process at flavour factories
• Lepton Flavour Violation from SUSY--GUTs: Where do we stand for MEG, PRISM/PRIME and a Super Flavour factory
• Lepton Flavour Violating Decays of Supersymmetric Higgs Bosons
• Seesaw and Lepton Flavour Violation in SUSY SO(10)
• Higgs-Mediated $B_{s,d}^0\to \mu \tau ,e\tau$ and $\tau \to 3\mu ,e\mu \mu$ Decays in Supersymmetric Seesaw Models
• Photon pair production at flavour factories with per mille accuracy
• Precision calculation for e+ e- -> 2f: the KK MC project
• Search for lepton-flavor-violating tau-lepton decays to $\ell \gamma$ at Belle
• Lepton Flavor Violating Processes and Muon g-2 in Minimal Supersymmetric SO(10) Model
• On Lepton Flavor Violation in Tau Decays
• Production of Polarized tau Pairs and Tests of CP Violation Using Polarized e+e- Colliders Near Threshold
• Non-universal gauge bosons $Z^{\prime }$ and lepton flavor-violation tau decays
• A fast simulation package for STCF detector

Cited by in corpus (2)

• STCF Conceptual Design Report: Volume 1 -- Physics & Detector
• Prospects for $P$ and $CP$ violation in ${\Lambda }_c^{+}$ decays with polarized beam at Super Tau-Charm Facility