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

• Published in: Physical review. D 2016-08, Vol.94 (3)
• Main Authors: Aaltonen, T, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Appel, J A, Arisawa, T, Artikov, A
• Format: Article
• Language: English
• Subjects: Bosons; Cosmology; Cross sections; Decay; Gravitation; Jets; Luminosity; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Texts
• ISSN: 2470-0010; 2470-0029
• DOI: 10.1103/PhysRevD.94.032008

We present a measurement of the total WW and WZ production cross sections in pp collision at s?=1.96TeV, 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 9.4fb super(?1). An analysis of the dijet mass spectrum provides 3.7[sigma] evidence of the summed production processes of either WW or WZ bosons with a measured total cross section of [sigma] sub()WWWZ13.7+ or -3.9pb. 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 2.9[sigma] and 2.1[sigma], respectively, with total cross sections of [sigma] sub()WW9.4+ or -4.2pb and (ProQuest: Formulae and/or non-USASCII text omitted)pb. The measurements are consistent with standard-model predictions.