Search for the Higgs boson in H->\gamma\gamma\ decays in $p\bar{p}$ collisions at 1.96 TeV

TL;DR

This paper reports on searches for the Higgs boson decaying into two photons at the Fermilab Tevatron, using data from CDF and D0, exploring both Standard Model and fermiophobic scenarios.

Contribution

It presents the first combined analysis of diphoton Higgs searches at the Tevatron, considering both SM and fermiophobic models with new data.

Findings

No significant Higgs signal observed.

Set upper limits on Higgs production cross section.

Compared results with SM and fermiophobic predictions.

Abstract

Recent searches conducted at the Fermilab Tevatron for the Higgs boson in the diphoton decay channel are reported using 7.0 fb$^{-1}$ and 8.2 fb$^{-1}$ of data collected at the CDF and D0 experiments, respectively. Although the standard model (SM) branching fraction is small, the diphoton final state is appealing due to better diphoton mass resolution compared with dijet final states. In addition, other models --- such as fermiophobic models where the Higgs does not couple to fermions --- predict much larger branching fractions for the diphoton decay. Here, results are presented for both a SM and fermiophobic Higgs boson as well as a SM search based on a combination of the CDF and D0 analyses.