Improved Search for a Higgs Boson Produced in Association with Z->l+l- in proton antiproton Collisions at sqrt(s) = 1.96 TeV

Abstract

We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb^-1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section times the H -> b bbar branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches beyond the gain due to the larger data sample. At a Higgs boson mass of 115 GeV/c^2 we set a limit of 5.9 times the standard model value.

submitted to Phys. Rev. Lett

References in corpus (5)

• Measuring the running top-quark mass
• Addendum to: Predictions for Higgs production at the Tevatron and the associated uncertainties
• NLO QCD corrections to Z b anti-b production with massive bottom quarks at the Fermilab Tevatron
• Search for ZH to llbb production in 4.2 fb^-1 of ppbar collisions at sqrt(s) = 1.96 TeV
• Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network

Cited by in corpus (2)

• A measurement of the ratio of inclusive cross sections $\sigma (p\bar{p}\to Z+b\mathrm{jet})/\sigma (p\bar{p}\to Z+\mathrm{jet})$ at $\sqrt{s}=1.96$ TeV
• Search for ZH to llbb production in 4.2 fb^-1 of ppbar collisions at sqrt(s) = 1.96 TeV