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Search for $WH$ associated production in 5.3 fb$^{-1}$ of $p\bar{p}$ collisions at the Fermilab Tevatron

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>28/03/2011
<mark>Journal</mark>Physics Letters B
Issue number1
Number of pages7
Pages (from-to)6-13
<mark>Original language</mark>English


We present a search for associated production of Higgs and $W$ bosons in $p\bar{p}$ collisions at a center of mass energy of $\sqrt{s}=1.96$ TeV in 5.3 fb$^{-1}$ of integrated luminosity recorded by the D0 experiment. Multivariate analysis techniques are applied to events containing one lepton, an imbalance in transverse energy, and one or two $b$-tagged jets to discriminate a potential $WH$ signal from standard model backgrounds. We observe good agreement between data and background, and set an upper limit of 4.5(at 95% confidence level and for $m_H=115$ GeV) on the ratio of the $WH$ cross section multiplied by the branching fraction of $H \rightarrow b \bar{b}$ to its standard model prediction. A limit of 4.8 is expected from simulation.

Bibliographic note

submitted to Physics Letter B