Abstract: We present a measurement of the total WW and WZ production cross sections in p¯pcollision at vs=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 3.7s evidence of the summed production processes of either WW or WZ bosons with a measured total cross section of sWW+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 Zbosons 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 2.9s and 2.1s, respectively, with total cross sections of sWW=9.4±4.2??pb and sWZ=3.7+2.5-2.2??pb. The measurements are consistent with standard-model predictions.

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