A SEARCH FOR NEUTRAL HIGGS BOSONS AT HIGH tan β WITH THE DØ DETECTOR

Abstract

Many models of Electro-Weak symmetry breaking predict two Higgs doublets, and thus five Higgs bosons, three of which are neutral (h, H, A). The Minimal Supersymmetric extension of the Standard Model (MSSM) predicts the coupling of the bottom quark to the CP-odd scalar A to vary as tan β. The sum of the production of the CP-even scalars, h and H, is also proportional to tan 2 β. After searching for neutral Higgs bosons in multi-jet events containing three or more bottom-quark jets collected at the Tevatron by the DØ detector during Run II, we can exclude tan β > 80 – 120 for 90 GeV < mA < 150 GeV.