Fully Hadronic Decay of Neutral Higgs Pairs at Future Linear Collider

Abstract

The aim of the study is to investigate the observability of Pseudo scalar Higgs A and neutral heavy CP even Higgs boson H in the framework of 2HDM type-I using lepton collider which is supposed to be operating at center-of-mass energy of 1000 GeV. The process under investigation is e−e+ → AH → ZHH → jjb¯bb¯b and e−e+ → AH → b¯bb¯b. The neutral Higgs pair production at electron positron collider and its decay is fully hadronic. The pseudoscalar Higgs A, decays to the Z boson along with neutral heavy CP even Higgs boson H. The CP even Higgs boson H decays to pair of bottom quarks. The heavy Higgs is a very unstable particle which decays in no time to a pair of bottom quarks. The different benchmark points are made where various Higgs mass hypotheses are considered. It has been demonstrated that the heavy neutral Higgs and Pseudoscalar Higgs signal observability is possible within the parameter space with respect to all experimental and theoretical constraints.