Right-handed heavy neutrinos in the littlest Higgs model

TL;DR

This paper explores the inclusion of a heavy right-handed neutrino in the littlest Higgs model, highlighting its unique couplings and potential for experimental detection at colliders.

Contribution

It introduces a novel extension of the littlest Higgs model with a right-handed neutrino that is not linked to light neutrinos via the seesaw mechanism.

Findings

The new neutrino couples strongly to the $A_H$ gauge boson.

Large cross sections suggest promising collider detection prospects.

The model predicts distinctive experimental signatures.

Abstract

In this paper we discuss the consequences of including a new heavy right-handed neutrino singlet $N_R$ in the littlest Higgs model. This new state is not connected with the light neutrinos {\it via} the seesaw mechanism. A very interesting property of this extended model is the full coupling of the new neutral gauge boson $A_H$ to $N_R$, giving large total cross sections and suggesting a wide range of experimental search for the $N_R$ at the p p collider CERN-LHC and future electron-positron collider ILC.