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(-1) collected from root s = 1.96 TeV p (p) over bar 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 (t) over bar pair. Depending on the production mode, Higgs boson decays to W+W-, ZZ, b (b) over bar, tau(+)tau(-), and gamma gamma are examined. We search for a Higgs boson with masses (m(H)) in the range 90-200 GeV/c(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(H) < 94 GeV/c(2), 96 < m(H) < 106 GeV/c(2), and 153 < m(H) < 175 GeV/c(2). The observed exclusion regions are 90 < m(H) < 102 GeV/c(2) and 149 < m(H) < 172 GeV/c(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(H) = 125 GeV/c(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(2), we constrain the coupling strengths of the new particle to W-+/- bosons, Z bosons, and fermions.

Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., et al. (2013). Combination of searches for the Higgs boson using the full CDF data set. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(5) [10.1103/PhysRevD.88.052013].

Combination of searches for the Higgs boson using the full CDF data set

P. Barria;G. Bellettini;M. Campanelli;P. Catastini;P. Garosi;P. Maestro;
2013-01-01

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(-1) collected from root s = 1.96 TeV p (p) over bar 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 (t) over bar pair. Depending on the production mode, Higgs boson decays to W+W-, ZZ, b (b) over bar, tau(+)tau(-), and gamma gamma are examined. We search for a Higgs boson with masses (m(H)) in the range 90-200 GeV/c(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(H) < 94 GeV/c(2), 96 < m(H) < 106 GeV/c(2), and 153 < m(H) < 175 GeV/c(2). The observed exclusion regions are 90 < m(H) < 102 GeV/c(2) and 149 < m(H) < 172 GeV/c(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(H) = 125 GeV/c(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(2), we constrain the coupling strengths of the new particle to W-+/- bosons, Z bosons, and fermions.
Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., et al. (2013). Combination of searches for the Higgs boson using the full CDF data set. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(5) [10.1103/PhysRevD.88.052013].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/44799
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