We present a measurement of the W-boson-pair production cross section in pp¯ collisions at 1.96 TeV center-of-mass energy and the first measurement of the differential cross section as a function of jet multiplicity and leading-jet energy. The W<sup>+</sup>W<sup>-</sup> cross section is measured in the final state comprising two charged leptons and neutrinos, where either charged lepton can be an electron or a muon. Using data collected by the CDF experiment corresponding to 9.7fb-1 of integrated luminosity, a total of 3027 collision events consistent with W<sup>+</sup>W<sup>-</sup> production are observed with an estimated background contribution of 1790 ± 190 events. The measured total cross section is σ(pp¯ → W<sup>+</sup>W<sup>-</sup>)= 14.0 ± 0.6 (stat)<inf>-1.0</inf><sup>+1.2</sup> (syst) ± 0.8 (lumi) pb, consistent with the standard model prediction.

Measurement of the production and differential cross sections of W+W- bosons in association with jets in p(p)over-bar collisions at root s = 1.96 TeV

MANCA, GIULIA;
2015

Abstract

We present a measurement of the W-boson-pair production cross section in pp¯ collisions at 1.96 TeV center-of-mass energy and the first measurement of the differential cross section as a function of jet multiplicity and leading-jet energy. The W+W- cross section is measured in the final state comprising two charged leptons and neutrinos, where either charged lepton can be an electron or a muon. Using data collected by the CDF experiment corresponding to 9.7fb-1 of integrated luminosity, a total of 3027 collision events consistent with W+W- production are observed with an estimated background contribution of 1790 ± 190 events. The measured total cross section is σ(pp¯ → W+W-)= 14.0 ± 0.6 (stat)-1.0+1.2 (syst) ± 0.8 (lumi) pb, consistent with the standard model prediction.
Nuclear and high energy physics; Physics and astronomy (miscellaneous)
File in questo prodotto:
File Dimensione Formato  
PhysRevD.92.039901.pdf

accesso aperto

Descrizione: Publisher's Note. This paper was published online on 23 June 2015 with an incorrect listing of author affiliations and footnotes. The affiliations and footnotes have been corrected as of 28 July 2015.
Tipologia: versione editoriale
Dimensione 55.5 kB
Formato Adobe PDF
55.5 kB Adobe PDF Visualizza/Apri

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: http://hdl.handle.net/11584/192451
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 4
social impact