Search for the standard model Higgs boson produced through vector boson fusion and decaying to b bbar

TL;DR

This paper reports a search for the standard model Higgs boson produced via vector boson fusion and decaying to bottom quarks, with results indicating a possible signal at 125 GeV, combining data from CMS at the LHC.

Contribution

First search for Higgs boson in VBF production mode decaying to b bbar at the LHC, with combined analysis showing evidence consistent with the standard model.

Findings

Observed significance of 2.2 sigma for H to b bbar at 125 GeV

Fitted signal strength mu = 2.8 (+1.6, -1.4)

Combined signal strength of 1.0 +/- 0.4 with other CMS results

Abstract

A first search is reported for a standard model Higgs boson (H) that is produced through vector boson fusion and decays to a bottom-quark pair. Two data samples, corresponding to integrated luminosities of 19.8 inverse femtobarns and 18.3 inverse femtobarns of proton-proton collisions at sqrt(s) = 8 TeV were selected for this channel at the CERN LHC. The observed significance in these data samples for a H to b bbar signal at a mass of 125 GeV is 2.2 standard deviations, while the expected significance is 0.8 standard deviations. The fitted signal strength mu = sigma/sigma[SM] = 2.8 + 1.6 - 1.4. The combination of this result with other CMS searches for the Higgs boson decaying to a b-quark pair, yields a signal strength of 1.0 +/- 0.4, corresponding to a signal significance of 2.6 standard deviations for a Higgs boson mass of 125 GeV.