Search for the standard model Higgs boson produced in association with top quarks using the full CDF data set

TL;DR

This paper reports a comprehensive search for the standard model Higgs boson produced with top quarks using the full Fermilab data set, setting upper limits on production rates but finding no significant signal.

Contribution

It provides the most sensitive search to date for the Higgs boson in the top-associated production channel using the complete CDF data set.

Findings

No significant excess observed over background.

Set 95% credibility-level upper bounds on cross section.

Expected and observed limits at 125 GeV are 12.6 and 20.5 times the standard model rate.

Abstract

A search is presented for the standard model Higgs boson produced in association with top quarks using the full Run II proton-antiproton collision data set, corresponding to 9.45 inverse fb, collected by the Collider Detector at Fermilab. No significant excess over the expected background is observed, and 95% credibility-level upper bounds are placed on the cross section sigma(t\bar{t}H --> lepton + missing transverse energy + jets). For a Higgs boson mass of 125 GeV, we expect to set a limit of 12.6, and observe a limit of 20.5 times the standard model rate. This represents the most sensitive search for a standard model Higgs boson in this channel to date.