We report on the results of a search for standard model Higgs bosons produced in association with W bosons from p ($p) over bar collisions at root s = 1.96 TeV. The search uses a data sample corresponding to approximately 1 fb(-1) of integrated luminosity. Events consistent with the W -> lvand H -> b (b) over bar signature are selected by triggering on a high-p(T) electron or muon candidate and tagging one or two of the jet candidates as having originated from b quarks. A neural network filter rejects a fraction of tagged charm and light-flavor jets, increasing the b-jet purity in the sample. We observe no excess lvb (b) over bar production beyond the background expectation, and we set 95% confidence level upper limits on the production cross section times branching fraction sigma(p ($) over bar -> WH)Br(H -> b (b) over bar) ranging from 3.9 to 1.3 pb, for specific Higgs boson mass hypotheses in the range 110 to 150 GeV/c(2), respectively.

Search for Standard Model Higgs Bosons Produced in Association with W Bosons

CAUZ, Diego;GIORDANI, Mario;PAULETTA, Giovanni;ROSSI, Melisa;SANTI, Lorenzo Gianni;SCURI, Fabrizio;
2008-01-01

Abstract

We report on the results of a search for standard model Higgs bosons produced in association with W bosons from p ($p) over bar collisions at root s = 1.96 TeV. The search uses a data sample corresponding to approximately 1 fb(-1) of integrated luminosity. Events consistent with the W -> lvand H -> b (b) over bar signature are selected by triggering on a high-p(T) electron or muon candidate and tagging one or two of the jet candidates as having originated from b quarks. A neural network filter rejects a fraction of tagged charm and light-flavor jets, increasing the b-jet purity in the sample. We observe no excess lvb (b) over bar production beyond the background expectation, and we set 95% confidence level upper limits on the production cross section times branching fraction sigma(p ($) over bar -> WH)Br(H -> b (b) over bar) ranging from 3.9 to 1.3 pb, for specific Higgs boson mass hypotheses in the range 110 to 150 GeV/c(2), respectively.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/884304
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 12
social impact