Search for the Higgs boson in lepton, tau and jets final states

TL;DR

This paper reports a search for the standard model Higgs boson in final states involving leptons, tau leptons, and jets, using Fermilab Tevatron data, setting upper limits on production cross sections at 125 GeV.

Contribution

It provides the first combined limits on Higgs production in tau and W decay channels at the Tevatron for 125 GeV mass.

Findings

Observed limit ratio at 125 GeV is 11.3 times the SM prediction.

Expected limit ratio at 125 GeV is 9.0 times the SM prediction.

Analysis sensitivity covers multiple Higgs production modes.

Abstract

We present a search for the standard model Higgs boson in final states with an electron or muon and a hadronically decaying tau lepton in association with two or more jets using 9.7 fb^{-1} of Run II Fermilab Tevatron Collider data collected with the D0 detector. The analysis is sensitive to Higgs boson production via gluon fusion, associated vector boson production, and vector boson fusion, followed by the Higgs boson decay to tau lepton pairs or to W boson pairs. The ratios of 95% C.L. upper limits on the cross section times branching ratio to those predicted by the standard model are obtained for orthogonal subsamples that are enriched in either H -> tau tau decays or H -> WW decays, and for the combination of these subsample limits. The observed and expected limit ratios for the combined subsamples at a Higgs boson mass of 125 GeV are 11.3 and 9.0 respectively.