Measurement of the <i>WW</i> and <i>WZ</i> production cross section using final states with a charged lepton and heavy-flavor jets in the full CDF Run II data set



Aaltonen, T, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Appel, JA, Arisawa, T, Artikov, A
et al (show 397 more authors) (2016) Measurement of the <i>WW</i> and <i>WZ</i> production cross section using final states with a charged lepton and heavy-flavor jets in the full CDF Run II data set. PHYSICAL REVIEW D, 94 (3). 032008-.

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Abstract

We present a measurement of the total WW and WZ production cross sections in pp collision at s=1.96 TeV, in a final state consistent with leptonic W boson decay and jets originating from heavy-flavor quarks from either a W or a Z boson decay. This analysis uses the full data set collected with the CDF II detector during Run II of the Tevatron collider, corresponding to an integrated luminosity of 9.4 fb-1. An analysis of the dijet mass spectrum provides 3.7σ evidence of the summed production processes of either WW or WZ bosons with a measured total cross section of σWW+WZ=13.7±3.9 pb. Independent measurements of the WW and WZ production cross sections are allowed by the different heavy-flavor decay patterns of the W and Z bosons and by the analysis of secondary-decay vertices reconstructed within heavy-flavor jets. The productions of WW and of WZ dibosons are independently seen with significances of 2.9σ and 2.1σ, respectively, with total cross sections of σWW=9.4±4.2 pb and σWZ=3.7-2.2+2.5 pb. The measurements are consistent with standard-model predictions.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 14 Sep 2016 15:31
Last Modified: 16 Mar 2024 00:04
DOI: 10.1103/PhysRevD.94.032008
Open Access URL: https://arxiv.org/pdf/1606.06823v3.pdf
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3003300