Tau and muon lepton flavor violations in the littlest Higgs model with T-parity

TL;DR

This paper investigates lepton flavor violations involving tau and mu processes within the littlest Higgs model with T-parity, analyzing asymmetries and correlations among various decay channels to identify potential signatures of new physics.

Contribution

It provides a comprehensive analysis of asymmetries and correlations in lepton flavor violating decays in the littlest Higgs model with T-parity, highlighting possible observable asymmetries.

Findings

Large parity and time-reversal asymmetries in mu+ --> e+ e+ e- decays.

Sizable asymmetries in tau lepton flavor violation processes.

Distinct chirality structures reflected in asymmetry patterns.

Abstract

Lepton flavor violation in tau and mu processes is studied in the littlest Higgs model with T-parity. We consider various asymmetries defined in polarized tau and mu decays. Correlations among branching ratios and asymmetries are shown in the following lepton flavor violation processes: mu+ --> e+ gamma, mu+ --> e+ e+ e-, mu- A --> e- A (A = Al, Ti, Au and Pb), tau+ --> mu+ gamma, tau+ --> mu+ mu+ mu-, tau+ --> mu+ e+ e-, tau+ --> mu+ P (P = pi0, eta and eta'), tau+ --> mu+ V (V = rho0, omega and phi), tau+ --> e+ gamma, tau+ --> e+ e+ e-, tau+ --> e+ mu+ mu-, tau+ --> e+ P, tau+ --> e+ V, tau+ --> mu+ mu+ e- and tau+ --> e+ e+ mu-. It is shown that large parity asymmetries and time-reversal asymmetries are allowed in mu+ --> e+ e+ e-. For tau lepton flavor violation processes, sizable asymmetries are possible reflecting characteristic chirality structure of lepton flavor violating interactions in this model.