Measurement of the W+ W- production cross section in p anti-p collisions at s(1/2) =1.96-TeV using dilepton events

• Published in: Physical review letters 2005-01, Vol.94
• Main Authors: Acosta, D, Adelman, J, Affolder, T, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, Antos, J, Aoki, M, Apollinari, G, Arisawa, T, Arguin, J -F, Artikov, A, Ashmanskas, W, Attal, A, Azfar, F, Azzi-Bacchetta, P, /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /INFN, Bologna/Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara /Cantabria Inst. of Phys. /Carnegie Mellon U. /Chicago U., EFI /Dubna, JINR /Duke U. /Fermilab /FloridaU. /Frascati /Geneva U. /Glasgow U. /Harvard U.
• Format: Article
• Language: English
• Subjects: CROSS SECTIONS; DECAY; ELECTRONS; Experiment-HEP; FERMILAB COLLIDER DETECTOR; LEPTONS; MUONS; PARTICLE ACCELERATORS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PRODUCTION; STANDARD MODEL
• ISSN: 0031-9007; 1079-7114

We present a measurement of the W{sup +}W{sup -} production cross section using 184 pb{sup -1} of p{bar p} collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W{sup +}W{sup -} {yields} {ell}{sup +}{nu}{ell}{sup -}{ovr {nu}}, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0{sub -0.8}{sup +2.2} events. The resulting W{sup +}W{sup -} production cross section measurement of {sigma}(p{bar p} {yields} W{sup +}W{sup -}) = 14.6{sub -5.1}{sup +5.8}(stat){sub -3.0}{sup +1.8}(syst) {+-} 0.9(lum) pb agrees well with the Standard Model expectation.