Combination of searches for the Higgs boson using the full CDF data set
Abstract
We present a combination of searches for the standard model Higgs boson using the full CDF run II data set, which corresponds to an integrated luminosity of 9.45-10.0fb-1 collected from s=1.96TeV pp¯ collisions at the Fermilab Tevatron. The searches consider Higgs boson production from gluon-gluon fusion, vector-boson fusion, and associated production with either a W or Z boson or a tt¯ pair. Depending on the production mode, Higgs boson decays to W+W-, ZZ, bb¯, τ+τ-, and γγ are examined. We search for a Higgs boson with masses (mH) in the range 90-200GeV/c2. In the absence of a signal, we expect based on combined search sensitivity to exclude at the 95% credibility level the mass regions 90<mH<94GeV/c2, 96<mH<106GeV/c2, and 153<mH<175GeV/c2. The observed exclusion regions are 90<mH<102GeV/c2 and 149<mH<172GeV/c2. A moderate excess of signal-like events relative to the background expectation at the level of 2.0 standard deviations is present in the data for the mH=125GeV/c2 search hypothesis. We also present interpretations of the data within the context of a fermiophobic model and an alternative standard model incorporating a fourth generation of fermions. Finally, for the hypothesis of a new particle with mass 125GeV/c2, we constrain the coupling strengths of the new particle to W± bosons, Z bosons, and fermions.
- Publication:
-
Physical Review D
- Pub Date:
- September 2013
- DOI:
- 10.1103/PhysRevD.88.052013
- Bibcode:
- 2013PhRvD..88e2013A
- Keywords:
-
- 13.85.Rm;
- 14.80.Bn;
- Limits on production of particles;
- Standard-model Higgs bosons