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Book Production of WZ Events in P Anti p Collisions at S 1 2

Download or read book Production of WZ Events in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results from a search for WZ production with subsequent decay to l[nu]l'{bar l}' (l and {ell}' = e or [mu]) using 0.30 fb−1 of data collected by the D0 experiment between 2002 and 2004 at the Tevatron. Three events with WZ decay characteristics are observed. With an estimated background of 0.71 ± 0.08 events, we measure the WZ production cross section to be 4.5{sub -2.6}{sup +3.8} pb, with a 95% C.L. upper limit of 13.3 pb. The 95% C.L. limits for anomalous WWZ couplings are found to be -2.0

Book Production of WZ Events in P Anti p Collisions at S

Download or read book Production of WZ Events in P Anti p Collisions at S written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results from a search for WZ production with subsequent decay to l?l'{bar l}' (l and {ell}' = e or?) using 0.30 fb−1 of data collected by the D0 experiment between 2002 and 2004 at the Tevatron. Three events with WZ decay characteristics are observed. With an estimated background of 0.71 ± 0.08 events, we measure the WZ production cross section to be 4.5{sub -2.6}{sup +3.8} pb, with a 95% C.L. upper limit of 13.3 pb. The 95% C.L. limits for anomalous WWZ couplings are found to be -2.0

Book Evidence of WW WZ Production with Lepton Jets Final States in P Anti p Collisions at S 1 2

Download or read book Evidence of WW WZ Production with Lepton Jets Final States in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2008 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first evidence of WW+WZ production with lepton+jets final states at a hadron collider. The data correspond to 1.07 inverse femtobarns of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider in proton-antiproton collisions at sqrt(s)=1.96 TeV. The observed cross section for WW+WZ production is 20.2 +/- 4.5 pb, consistent with the SM prediction of 16.1 +/- 0.9 pb. The probability for background fluctuations to produce an excess equal to or larger than that observed is estimated to be 5.4e-6, corresponding to a significance of 4.4 standard deviations.

Book Direct Measurement of the W Production Charge Asymmetry in P Anti p Collisions at S 1 2

Download or read book Direct Measurement of the W Production Charge Asymmetry in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y{sub W} in p{bar p} collisions at √s = 1.96 TeV. We use a sample of W → e[nu] events in data from 1 fb−1 of integrated luminosity collected using the CDF II detector. In the region

Book First Measurement of ZZ Production in Panti p Collisions at S

Download or read book First Measurement of ZZ Production in Panti p Collisions at S written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the first measurement of the cross section for Z boson pair production at a hadron collider. This result is based on a data sample corresponding to 1.9 fb−1 of integrated luminosity from p{bar p} collisions at √s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. In the lll′l′ channel, we observe three ZZ candidates with an expected background of 0.096{sub -0.063}{sup +0.092} events. In the ll?? channel, we use a leading-order calculation of the relative ZZ and WW event probabilities to discriminate between signal and background. In the combination of lll′l′ and ll?? channels, we observe an excess of events with a probability of 5.1 x 10−6 to be due to the expected background. This corresponds to a significance of 4.4 standard deviations. The measured cross section is?(p{bar p} →ZZ) = 1.4{sub -0.6}{sup +0.7} (stat.+syst.) pb, consistent with the standard model expectation.

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Search for ZZ and ZW Production in P Anti p Collisions at S 1 2

Download or read book Search for ZZ and ZW Production in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book K0 s and Lambda0 Production Studies in P Anti p Collisions at S 1 2

Download or read book K0 s and Lambda0 Production Studies in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2005 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a study of the production of K{sub s}° and [Lambda]° in inelastic p{bar p} collisions at √s = 1800 and 630 GeV using data collected by the CDF experiment at the Fermilab Tevatron. Analyses of K{sub s}° and [Lambda]° multiplicity and transverse momentum distributions, as well as of the dependencies of the average number and (p{sub T}) of K{sub s}° and [Lambda]° on charged particle multiplicity are reported. Systematic comparisons are performed for the full sample of inelastic collisions, and for the low and high momentum transfer subsamples, at the two energies. The p{sub T} distributions extend above 8 GeV/c, showing a (p{sub T}) higher than previous measurements. The dependence of the mean K{sub s}°([Lambda]°) p{sub T} on the charged particle multiplicity for the three samples shows a behavior analogous to that of charged primary tracks.

Book Z Boson Transverse Momentum Distribution and ZZ and WZ Production

Download or read book Z Boson Transverse Momentum Distribution and ZZ and WZ Production written by Mika Vesterinen and published by Springer Science & Business Media. This book was released on 2012-06-30 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work develops novel data analysis techniques enabling aspects of the Standard Model of particle physics to be tested with unprecedented precision using data from the DZero experiment at the high energy “Tevatron” proton-antiproton collider at Fermilab, Chicago. Vesterinen's measurements of the transverse momentum of Z bosons using the novel variable φ* have exposed deficiencies in the current state-of-the-art theoretical predictions for vector boson production at hadron colliders. These techniques are now being used in the experiments at CERN’s Large Hadron Collider (LHC) and have stimulated considerable interest in the theoretical particle physics community. Furthermore, Vesterinen's measurements of the cross sections for the production of pairs of vector bosons (WZ and ZZ) are to date the most precise ever made.

Book ZZ L L V Anti v Production in P Anti p Collisions at S 1 2

Download or read book ZZ L L V Anti v Production in P Anti p Collisions at S 1 2 written by and published by . This book was released on 2008 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book First Measurement of ZZ Production in Panti p Collisions at S 1 2

Download or read book First Measurement of ZZ Production in Panti p Collisions at S 1 2 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: