Lepton-specific inert two-Higgs-doublet model confronted with the new results for muon and electron <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>g</mml:mi><mml:mo>−</mml:mo><mml:mn>2</mml:mn></mml:math> anomalies and multilepton searches at the LHC
Xiao-Fang Han, Tianjun Li, Hongxin Wang, Lei Wang, Yang Zhang
Abstract
Combining the multilepton searches at the LHC, we study the possibilities of accommodating the new data of muon and electron $g\ensuremath{-}2$ anomalies in the lepton-specific inert two-Higgs-doublet model. We take the heavy $CP$-even Higgs as the 125 GeV Higgs, and find the muon and electron $g\ensuremath{-}2$ anomalies can be explained simultaneously in the region of $5\text{ }\text{ }\mathrm{GeV}<{m}_{h}<60\text{ }\text{ }\mathrm{GeV}$, $200\text{ }\text{ }\mathrm{GeV}<{m}_{A}<620\text{ }\text{ }\mathrm{GeV}$, $190\text{ }\text{ }\mathrm{GeV}<{m}_{{H}^{\ifmmode\pm\else\textpm\fi{}}}<620\text{ }\text{ }\mathrm{GeV}$ for appropriate Yukawa couplings between leptons and inert Higgs. Meanwhile, the model can give a better fit to the data of lepton universality in $\ensuremath{\tau}$ decays than the SM. Further, the multilepton event searches at the LHC impose a stringent upper bound on ${m}_{h}$, ${m}_{h}<35\text{ }\text{ }\mathrm{GeV}$.