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Search for the standard model Higgs boson produced in association with a W-+/- boson with 7.5 fb(-1) integrated luminosity at CDF

Aaltonen T.
•
Alvarez Gonzalez B.
•
Amerio S.
altro
SCURI, Fabrizio
2012
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We present a search for the standard model Higgs boson produced in association with a W-+/- boson. This search uses data corresponding to an integrated luminosity of 7.5 fb(-1) collected by the CDF detector at the Tevatron. We select WH -> lvb (b) over bar candidate events with two jets, large missing transverse energy, and exactly one charged lepton. We further require that at least one jet be identified to originate from a bottom quark. Discrimination between the signal and the large background is achieved through the use of a Bayesian artificial neural network. The number of tagged events and their distributions are consistent with the standard model expectations. We observe no evidence for a Higgs boson signal and set 95% C.L. upper limits on the WH production cross section times the branching ratio to decay to b (b) over bar pairs, sigma(p (p) over bar -> (WH)-H-+/-) x B(H -> b (b) over bar), relative to the rate predicted by the standard model. For the Higgs boson mass range of 100 to 150 GeV/c(2) we set observed (expected) upper limits from 1.34 (1.83) to 38.8 (23.4). For 115 GeV/c(2) the upper limit is 3.64 (2.78). The combination of the present search with an independent analysis that selects events with three jets yields more stringent limits ranging from 1.12 (1.79) to 34.4 (21.6) in the same mass range. For 115 and 125 GeV/c(2) the upper limits are 2.65 (2.60) and 4.36 (3.69), respectively.
DOI
10.1103/PhysRevD.86.032011
WOS
WOS:000307727200002
Archivio
http://hdl.handle.net/11390/879343
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84865216669
Diritti
metadata only access
Web of Science© citazioni
9
Data di acquisizione
Mar 23, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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