Phenomenology of extension of inert-doublet model with exotic scalars and leptons

Lobsang Dhargyal

doi:10.1140/epjc/s10052-018-5641-3

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2018) 78: 150
https://doi.org/10.1140/epjc/s10052-018-5641-3

Regular Article - Theoretical Physics

Phenomenology of $U(1)_{F}$ extension of inert-doublet model with exotic scalars and leptons

Lobsang Dhargyal^*

Harish-Chandra Research Institute, HBNI, Chhatnag Road, Jhusi, Allahabad, 211 019, India

^* e-mail: dhargyal@hri.res.in

Received: 11 December 2017
Accepted: 10 February 2018
Published online: 21 February 2018

Abstract

In this work we will extend the inert-doublet model (IDM) by adding a new $U(1)_{F}$ gauge symmetry to it, under which, a $Z_{2}$ even scalar ( $\phi _{2}$ ) and $Z_{2}$ odd right handed component of two exotic charged leptons $(F_{eR},\ F_{\mu R})$ , are charged. We also add one $Z_{2}$ even real scalar ( $\phi _{1}$ ) and one complex scalar ( $\phi$ ), three neutral Majorana right handed fermions ( $N_{1},\ N_{2},\ N_{3}$ ), two left handed components of the exotic charged leptons $(F_{eL},\ F_{\mu L})$ as well as $F_{\tau }$ are all odd under the $Z_{2}$ , all of which are not charged under the $U(1)_{F}$ . With these new particles added to the IDM, we have a model which can give two scalar DM candidates, together they can explain the present DM relic density as well as the muon (g-2) anomaly simultaneously. Also in this model the neutrino masses are generated at one loop level. One of the most peculiar feature of this model is that non-trivial solution to the axial gauge anomaly free conditions lead to the prediction of a stable very heavy partner to the electron ( $F_{e}$ ), whose present collider limit (13 TeV LHC) on its mass should be around $m_{F_{e}} \ge$ few TeV.