First Observation of Diboson Production in Hadronic Final State at the Tevatron
Author | : |
Publisher | : |
Total Pages | : 6 |
Release | : 2009 |
ISBN-10 | : OCLC:873632122 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book First Observation of Diboson Production in Hadronic Final State at the Tevatron written by and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first observation in hadronic collisions of the electroweak production of vector boson pairs (VV; V = W, Z) where one boson decays to a hadronic final state. The data correspond to 3.5 fb−1 of integrated luminosity collected by the CDF II detector in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. Event selection requires two identified jets and large transverse momentum imbalance. The analysis employs several novel techniques to suppress multijet background and reduce systematic uncertainties. We observe 1516 ± 239(stat) ± 144(syst) diboson candidate events and measure a cross section of [sigma](p{bar p} 2!VV + X) = 18.0 ± 2.8(stat) ± 2.4(syst) ± 1.1(lumi) pb, in agreement with standard model (SM) expectations.