Search for Standard Model Higgs Boson Production in Association with a W Boson at CDF

Abstract

We present a search for the standard model Higgs boson production in association with a $W$ boson in proton-antiproton collisions ($p\bar{p}\to W^{\pm }H\to \ell \nu b\bar{b}$) at a center of mass energy of 1.96 TeV. The search employs data collected with the CDF II detector which correspond to an integrated luminosity of approximately 2.7 fb${}^{-1}$. We recorded this data with two kinds of triggers. The first kind required high-p${}_T$ charged leptons and the second required both missing transverse energy and jets. The search selects events consistent with a signature of a single lepton ($e^{\pm }/{\mu }^{\pm }$), missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with a secondary vertex tagging method and a jet probability tagging method. Kinematic information is fed in an artificial neural network to improve discrimination between signal and background. The search finds that both the observed number of events and the neural network output distributions are consistent with the standard model background expectations, and sets 95% confidence level upper limits on the production cross section times branching ratio. The limits are expressed as a ratio to the standard model production rate. The limits range from 3.6 (4.3 expected) to 61.1 (43.2 expected) for Higgs masses from 100 to 150 GeV/$c^2$, respectively.

References in corpus (9)

• Observation of Single Top Quark Production and Measurement of |Vtb| with CDF
• Measurement of the Single Top Quark Production Cross Section at CDF
• Search for a Higgs Boson Produced in Association with a W Boson in pbar-p Collisions at sqrt{s} = 1.96 TeV
• A search for associated W and Higgs Boson production in ppbar collisions at sqrt{s}=1.96 TeV
• Search for $WH$ associated production in 5.3 fb${}^{-1}$ of $p\bar{p}$ collisions at the Fermilab Tevatron
• Search for the Higgs boson in events with missing transverse energy and b quark jets produced in proton-antiproton collisions at s**(1/2)=1.96 TeV
• A Measurement of the t-tbar Cross Section in p-pbar Collisions at sqrt(s) = 1.96 TeV using Dilepton Events with a Lepton plus Track Selection
• Search for Standard Model Higgs Bosons Produced in Association with W Bosons
• Search for Standard Model Higgs Boson Production in Association with a W Boson using a Neural Network

Cited by in corpus (4)

• Search for the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set
• Higgs production as a probe of anomalous top couplings
• Search for the standard model Higgs boson produced in association with a $W^{\pm }$ boson with 7.5 fb${}^{-1}$ integrated luminosity at CDF
• Searches for the Higgs boson decaying to W^{+} W^{-} -> l^{+}nu l^{-}nubar with the CDF II detector