New Physical Signal Analysis Of Charge Higgs Boson On LHC In 2HDM Model

The Standard Model(SM)of particle physics is a theory that describes elementary particles and their interactions.The SM has been tested experimentally,especially by the discovery of the Higgs boson at the Large Hadron Collider(LHC).However,there are difficult theoretical and experimental puzzles to explain by SM,so we need to search for new physics.Theoreticians have proposed various new models to complement the SM,and one of the simplest extensions to the Higgs section of the SM is the Two-Higgs-Doublet Model(2HDM),in which there are five observable Higgs particles,including a pair of charged Higgs boson H±,two scalar h/H(supposing the heavier H is the discovered 125 GeV Higgs particle),and a pseudoscalar scalar A.H± are one of the main features of the 2HDM,and the study of their properties and decay modes can help to explore the structure of the Higgs section of the new physics model,reveal the nature of the CP problem and dark matters.In this paper,we study the process of a charged Higgs boson H±associated produced with a light Higgs boson h in 2HDM,Type-I model and decay to W*+4 fermions.Two production processes pp→H±h→W±*hh→lvbb bb,pp→H±h→W±*hh→lvbbτ+τ-,with distinct collider signals,are considered.All events are Monte-Carlo simulated with detector effects.In order to effectively suppresse the background,several signal selection criterions are designed according to different kinematic characteristics of the signal and the SM backgrounds.Finally,the significance of the signals are calculated in both processes at the LHC with(?)=14 TeV and a integrated luminosity of 300 fb-1,and a large significance can be found for the W*+4b signal,but for the W*+2b2τ process,further analysis is needed.