Tevatron Combination and Higgs Boson Properties

TL;DR

The paper reports a combined analysis of Tevatron data revealing a Higgs boson signal around 125 GeV/c², consistent with the Standard Model, with detailed studies of its properties and decay channels.

Contribution

First combined analysis of Tevatron data showing evidence for a Higgs boson at 125 GeV/c² with detailed property measurements.

Findings

Significant excess in the 115-140 GeV/c² range

Observed signal strength consistent with SM Higgs

Coupling measurements align with Standard Model predictions

Abstract

We present the Tevatron combination of searches for the Higgs boson and studies of its properties. The searches use up to 10 fb$^{-1}$ of Tevatron collider Run II data. We observe a significant excess of events in the mass range between 115 and 140 GeV/c$^2$. The local significance corresponds to 3 Gaussian standard deviations at the mass of 125 GeV/c$^2$. Furthermore, we separately combine searches for the Higgs boson decaying to $b\bar b$, $\tau^+\tau^-$, $W^+W^-$, and photon pairs in the final states. The observed signal strengths in all channels are consistent with the presence of a standard model scalar boson with a mass of 125 GeV/c$^2$. Studies of the couplings at the Tevatron are consistent with SM predictions and are complementary to those performed at LHC.