Search for neutral MSSM Higgs bosons decaying to tau pairs in p-pbar collisions at sqrt(s)=1.96 TeV

Abstract

We present a search for neutral supersymmetric Higgs bosons decaying to tau pairs produced in p-pbar collisions at sqrt(s) = 1.96 TeV. The data, corresponding to 310 pb^(-1) integrated luminosity, were collected with the CDF II detector at the Tevatron collider at Fermilab. No significant excess above the standard model backgrounds is observed. We set exclusion limits on the production cross section times branching fraction to tau pairs for Higgs masses in the range from 90 to 250 GeV/c^2.

Figures (4)

• Figure 1: Track multiplicity for hadronically decaying tau candidates before applying the opposite charge and $N_{trk}^{sig}$ requirements.
• Figure 2: Example fit of the $m_{vis}$ distribution for signal with $m_A$=140 GeV/$c^2$. Signal and background normalizations correspond to the fit results for signal exclusion at 95% CL.
• Figure 3: Upper limits at 95% CL on Higgs production cross section times branching fraction to $\tau$ pairs. The expected limits from the pseudo-experiments are also shown.
• Figure 4: Excluded regions in the $\tan\beta$ vs $m_A$ plane for the $m_h^{max}$ and no-mixing scenarios with (a) $\mu<0$ and (b) $\mu>0$.