Search for Higgs bosons predicted in two-Higgs-doublet models via decays to tau lepton pairs in 1.96 TeV proton-antiproton collisions

TL;DR

This study searches for Higgs bosons predicted by two-Higgs-doublet models decaying into tau lepton pairs in proton-antiproton collisions, setting exclusion limits without observing a signal.

Contribution

First search for these Higgs bosons in tau pair decays at the Tevatron, providing new constraints on model parameters.

Findings

No evidence of Higgs boson signal observed.

Exclusion limits set in tan beta versus m(A) parameter space.

Abstract

We present the results of a search for Higgs bosons predicted in two-Higgs-doublet models, in the case where the Higgs bosons decay to tau lepton pairs, using 1.8 inverse fb of integrated luminosity of proton-antiproton collisions recorded by the CDF II experiment at the Fermilab Tevatron. Studying the observed mass distribution in events where one or both tau leptons decay leptonically, no evidence for a Higgs boson signal is observed. The result is used to infer exclusion limits in the two-dimensional parameter space of tan beta versus m(A).