Combination of searches for the Higgs boson using the full CDF data set
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Aaltonen-2013-Combination of searches.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
September 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Combination of searches for the Higgs boson using the full CDF data set.” Physical Review D 88, no. 5 (September 2013). © 2013 American Physical Society
Version
Final published version
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 9.45–10.0 fb[superscript −1] collected from s√ = 1.96 TeV p[¯ over p] 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 t[¯ over t] pair. Depending on the production mode, Higgs boson decays to W[superscript +]W[superscript −], ZZ, b[¯ over b], τ[superscript +]τ[superscript −], and γγ are examined. We search for a Higgs boson with masses (m[subscript H]) in the range 90–200 GeV/c[superscript 2]. In the absence of a signal, we expect based on combined search sensitivity to exclude at the 95% credibility level the mass regions 90 < m[subscript H] < 94 GeV/c[superscript 2], 96 < m[subscript H] < 106 GeV/c[superscript 2], and 153 < m[subscript H] < 175 GeV/c[superscript 2]. The observed exclusion regions are 90 < m[subscript H] < 102 GeV/c[superscript 2] and 149 < m[subscript H] < 172 GeV/c[superscript 2]. 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 m[subscript H] = 125 GeV/c[superscript 2] 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 125 GeV/c[superscript 2], we constrain the coupling strengths of the new particle to W[superscript ±] bosons, Z bosons, and fermions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.88.052013
