The Study Of The Doubly Charged Vector Leptons And Higgs Portal Scalar Particls Decays

The standard model is a successful theory at present,which predicts the experimental gauge bosons,fermions and Higgs particles.The Higgs field has broken symmetry,which can make the fermion and the gauge boson get masses.Physicists have established many models to study Higgs particles.In 2006,physicists proposed the Higgs portal model,in which the Higgs bilinearH⁺H operator can interact with singlet（scalar）particle.The discovery of the Higgs boson in 2012 provides a new channel for the research of singlet scalar particles.The effect of singlet scalar particles can only be produced by mixing with Higgs boson,but the mixing between them is very small,which makes it difficult to be detected on colliders.The detection probability of singlet scalar particles can be enhanced by introducing doubly charged vector-like leptons.Doubly charged vector-like lepton is one of the charged leptons.Its study helps to provide more information about the charged leptons.Experimentally,the L₃ international experimental group have given the lower limit value of the charged heavy lepton massM＞100.8GeV.Theoretically,physicists have conducted phenomenological studies on doubly charged vector lepton from different perspectives,which focus on the generation and decay of doubly charged vector lepton,and its contribution toh→（？）and muon anomalous magnetic momentg-2.In this paper,we extend the SM by a single scalar singletΦand a doubly charged vector lepton doublet,and study their decays.We only consider the case where the doubly charged vector lepton only coupling to one SM right-hand lepton_Re.The results show thatD^-→e^-h⁰（Z⁰）and△^--→e^-W^-could occur.Among them,the decay ofD^-→e^-h⁰ is dominant,and theD^-→△^--W⁺decay is forbidden kinematically.The value of muon anomalous magnetic moment g-2 is less than the experimental values by the one or two orders of magnitude and is insensitive to the mass the of doubly charged vector lepton.The Higgs portal scalar particles could decay into two gauge bosons.The relationship of these decays widths are:（?）（φ→WW）＞（?）（φ→（？））＞（?）（φ→ZZ）＞（?）（φ→Z（?））.And the doubly charged vector lepton could increases the decay branch ratio of φ→（？）to 33%.Our researchers are expected to provide reference for the future researches on doubly charged vector leptons and Higgs portal scalar particles.