Measurement of the W(+)W(-) production cross section in p(p)over-bar collisions at root s=1.96 TeV using dilepton events

We present a measurement of the W(+)W(-) production cross section using 184 pb(-1) of p (p) over bar collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W(+)W(-)-> l(+)nu l(-)(nu) over bar, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0(-0.8)(+2.2) events. The resulting W(+)W(-) production cross-section measurement of sigma(p (p) over bar -> W(+)W(-))=14.6(-5.1)(+5.8)(stat)(-3.0)(+1.8)(syst)+/- 0.9(lum) pb agrees well with the standard model expectation. RI Lancaster, Mark/C-1693-2008; Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012