Search for associated Higgs boson production WH->WWW*->l+-nu l'+-nu'+X in p-pbar collisions at sqrt(s)=1.96 TeV

TL;DR

This paper reports a search for associated Higgs production in proton-antiproton collisions, focusing on specific final states with like-sign leptons, and sets upper limits on production cross sections for Higgs masses between 115 and 175 GeV.

Contribution

First search for WH associated production in like-sign dilepton final states at Tevatron, setting new upper limits on cross section for Higgs masses 115-175 GeV.

Findings

No excess over background observed

Set upper limits on cross section between 2.8 and 3.2 pb

Excluded certain Higgs mass ranges at 95% confidence level

Abstract

We present a search for associated Higgs boson production in the process $p\bar{p} \to WH\to WWW^*\to l^\pm\nu l'^\pm\nu'+X$ in final states containing two like-sign isolated electrons or muons ($e^\pm e^\pm$, $e^\pm \mu^\pm$, or $\mu^\pm \mu^\pm$). The search is based on D0 Run II data samples corresponding to integrated luminosities of 360--380 pb$^{-1}$. No excess is observed over the predicted standard model background. We set 95% C.L. upper limits on $\sigma(p\bar{p}\to WH)\times Br(H\to WW^*)$ between 3.2 and 2.8 pb for Higgs masses from 115 to 175 GeV.