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We present a search for the standard model Higgs boson produced in association with a Z boson, using up to 7.9 fb(-1) of integrated luminosity from p (p) over bar collisions collected with the CDF II detector. We utilize several novel techniques, including multivariate lepton selection, multivariate trigger parametrization, and a multi-stage signal discriminant consisting of specialized functions trained to distinguish individual backgrounds. By increasing acceptance and enhancing signal discrimination, these techniques have significantly improved the sensitivity of the analysis above what was expected from a larger dataset alone. We observe no significant evidence for a signal, and we set limits on the ZH production cross section. For a Higgs boson with mass 115 GeV/c(2), we expect (observe) a limit of 3.9 (4.8) times the standard model predicted value, at the 95% credibility level.

T., A., C., C., B. A., G., S., A., D., A., A., A., et al. (2012). Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb(-1) of p(p)over-bar collisions at root s=1.96 TeV using the CDF ll detector. PHYSICS LETTERS. SECTION B, 715(1-3), 98-104 [10.1016/j.physletb.2012.07.045].

Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb(-1) of p(p)over-bar collisions at root s=1.96 TeV using the CDF ll detector

BARRIA, PATRIZIA;GAROSI, PAOLA;MAESTRO, PAOLO;RUFFINI, FABRIZIO;SQUILLACIOTI, PAOLA;
2012-01-01

Abstract

We present a search for the standard model Higgs boson produced in association with a Z boson, using up to 7.9 fb(-1) of integrated luminosity from p (p) over bar collisions collected with the CDF II detector. We utilize several novel techniques, including multivariate lepton selection, multivariate trigger parametrization, and a multi-stage signal discriminant consisting of specialized functions trained to distinguish individual backgrounds. By increasing acceptance and enhancing signal discrimination, these techniques have significantly improved the sensitivity of the analysis above what was expected from a larger dataset alone. We observe no significant evidence for a signal, and we set limits on the ZH production cross section. For a Higgs boson with mass 115 GeV/c(2), we expect (observe) a limit of 3.9 (4.8) times the standard model predicted value, at the 95% credibility level.
2012
PHYSICS LETTERS. SECTION B
T., A., C., C., B. A., G., S., A., D., A., A., A., et al. (2012). Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb(-1) of p(p)over-bar collisions at root s=1.96 TeV using the CDF ll detector. PHYSICS LETTERS. SECTION B, 715(1-3), 98-104 [10.1016/j.physletb.2012.07.045].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/40858
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