Lepton flavour violation Signals of the singly charged scalar singlet at the ILC

Abstract

The singly charged $SU(2{)}_L$ singlet scalar is one of the very interesting new particles, as it can generate neutrino masses at loop level, produce contributions to various flavour observables. We study the possibility of detecting this kind of scalar predicted by the singly-charged scalar model at ILC via the lepton flavour violation (LFV) process $e^{+}{e}^{-}\to S^{+}{S}^{-}\to \mu e+E/$. Considering the constraints on the free parameters, we obtain the expected sensitivities of the ILC with the center of mass energy $\sqrt{s}=1\mathrm{TeV}$ and the integrated luminosity $\mathcal{L}=$ $1.5{\mathrm{ab}}^{-1}$ to the parameter space of the singly-charged scalar model. The prospective excluded mass range at $95\%$ C.L. is $M_S\gtrsim 470\mathrm{GeV}$, $410\mathrm{GeV}$ for the branching ratio ${\mathcal{B}}_{\mu e}$ = $100\%$ , $50\%$, respectively, while the scalar with $M_S\gtrsim 300\mathrm{GeV}$ is excluded at $95\%$ C.L. for ${\mathcal{B}}_{\mu e}$ = $30\%$.

References in corpus (6)

• An Introduction to PYTHIA 8.2
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Designing and recasting LHC analyses with MadAnalysis 5
• Prospects for the Zee-Babu Model at the LHC and low energy experiments
• LHC Phenomenology of Type II Seesaw: Nondegenerate Case
• Correlative signatures of heavy Majorana neutrinos and doubly-charged Higgs bosons at the Large Hadron Collider