Search for Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model in e+e- Interactions at sqrt(s) up to 209 GeV

TL;DR

This paper reports a search for specific Higgs bosons predicted by the MSSM using LEP data, setting new lower mass limits with no signal detected.

Contribution

First search for MSSM neutral Higgs bosons at LEP energies up to 209 GeV, establishing new mass limits based on combined data.

Findings

No signal observed for MSSM Higgs bosons.

Lower mass limits set at mh > 84.5 GeV and mA > 86.3 GeV.

Results constrain MSSM parameter space.

Abstract

A search for the lightest neutral CP-even and neutral CP-odd Higgs bosons of the Minimal Supersymmetric Standard Model is performed using 216.6 pb-1 of data collected with the L3 detector at LEP at centre-of-mass energies between 203 and 209 GeV. No indication of a signal is found. Including our results from lower centre-of-mass energies, lower limits on the Higgs boson masses are set as a function of tan(beta) for several scenarios. For tan(beta) greater than 0.7 they are mh > 84.5 GeV and mA > 86.3 GeV at 95% confidence level.