Doubly charged scalars and vector-like leptons confronting the muon g-2 anomaly and Higgs vacuum stability

Abstract

The present work introduces new scalar and fermionic degrees of freedom to the Standard Model. While the scalar sector is augmented by a complex scalar triplet and a doubly charged scalar singlet, the fermionic sector is extended by two copies of vector-like leptons. Of these, one copy is an $SU(2{)}_L$ singlet while the other, an $SU(2{)}_L$ doublet. We explain how this combination can offer a solution to the muon g-2 anomaly and also lead to non-zero neutrino masses. In addition, it is also shown that the parameter regions compliant with the two aforementioned issues can stabilise the electroweak vacuum till the Planck scale, something not possible within the Standard Model alone.

Text modified and figures added. Version accepted for publication

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Cited by in corpus (6)

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• Portals into Higgs vacuum stability
• Collider Signatures of a Scalar Leptoquark and Vector-like Lepton in Light of Muon Anomaly
• Scalar dark matter and Muon $g-2$ in a $U(1{)}_{L_{\mu }-L_{\tau }}$ model
• Sparticle Spectroscopy at LHC-Run3 and LSP Dark Matter in light of Muon g-2
• Alternative signatures of the quintuplet fermions at the LHC and future linear colliders