Search for the standard model and a fermiophobic Higgs boson in diphoton final states

TL;DR

This paper reports a search for the standard model and fermiophobic Higgs bosons in diphoton final states using Tevatron data, setting the most restrictive limits to date and excluding a fermiophobic Higgs below 112.9 GeV.

Contribution

First to set experimental limits on both standard and fermiophobic Higgs bosons in diphoton channels at the Tevatron.

Findings

No excess observed above background

Most restrictive upper limits on cross section times branching ratio

Fermiophobic Higgs below 112.9 GeV excluded

Abstract

We present a search for the standard model Higgs boson and a fermiophobic Higgs boson in the diphoton final states based on 8.2 fb-1 of ppbar collisions collected with the D0 detector at the Fermilab Tevatron Collider. No excess of data above background predictions is observed and upper limits at the 95% C.L. on the cross section multiplied by the branching fraction are set which are the most restrictive to date. A fermiophobic Higgs boson with a mass below 112.9 GeV is excluded at the 95% C.L.