Search for $WH \to \ell \nu b\bar{b}$ Final States at the Tevatron

TL;DR

This paper reports on the search for low mass Higgs bosons produced with a W boson at the Tevatron, setting upper limits on production rates based on data from CDF and D0 experiments.

Contribution

It presents the first combined analysis of W-Higgs associated production at the Tevatron with new upper limit results for Higgs mass at 115 GeV.

Findings

Upper limits are 2.65 (CDF) and 4.6 (D0) times the Standard Model prediction for M_H=115 GeV.

Data samples with isolated leptons and b-jet signatures were used for the search.

Results constrain the Higgs production cross section in the low mass region.

Abstract

Latest results are presented in the search for low mass standard model Higgs production in association with a $W$ boson, based on large luminosity data samples collected at the CDF and D0 Experiments at the Fermilab Tevatron $p\bar{p}$ collider. The selection of event samples containing an isolated lepton, an imbalance in transverse energy in the events, and either one or two reconstructed jets consistent with having evolved from a $b$-quark, provides statistically independent data samples to search for $q\bar{q}\rightarrow WH$ candidates. Expected and observed upper limits are derived for the product of the $WH$ production cross section and branching ratios and are reported in units of the standard model prediction. The observed (expected) upper limits for a Higgs mass $M_{H}=115 ~\rm GeV$ are factors 2.65 (2.6) and 4.6 (3.5) above the standard model prediction for the CDF and D0 searches, respectively.