Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**1/2
Title | Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**1/2 PDF eBook |
Author | |
Publisher | |
Pages | 9 |
Release | 2005 |
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The authors present a study of the dijet invariant mass distribution for the reaction {bar p}p → 2 jets+[gamma] + X, at a center of mass energy of 1.8 TeV, using data collected by the CDF experiment. They compare the data to predictions for the production of a photon with two jets, together with the resonant processes {bar p}p → W/Z + [gamma] + X, in which the W and Z bosons decay hadronically. A fit is made to the dijet invariant mass distribution combining the non-resonant background and resonant processes. They use the result to establish a limit for the inclusive production cross section of W/Z + [gamma] with hadronic decay of the W and Z bosons.
Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**ư
Title | Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**ư PDF eBook |
Author | |
Publisher | |
Pages | 9 |
Release | 2005 |
Genre | |
ISBN |
The authors present a study of the dijet invariant mass distribution for the reaction {bar p}p → 2 jets+? + X, at a center of mass energy of 1.8 TeV, using data collected by the CDF experiment. They compare the data to predictions for the production of a photon with two jets, together with the resonant processes {bar p}p → W/Z +? + X, in which the W and Z bosons decay hadronically. A fit is made to the dijet invariant mass distribution combining the non-resonant background and resonant processes. They use the result to establish a limit for the inclusive production cross section of W/Z +? with hadronic decay of the W and Z bosons.
High Energy Physics Index
Title | High Energy Physics Index PDF eBook |
Author | |
Publisher | |
Pages | 716 |
Release | 1990 |
Genre | Nuclear physics |
ISBN |
Search for Exclusive Z Boson Production and Observation of High Mass P Anti-p ---] Gamma Gamma Anti-p ---] Pl+ L- Anti-p Events in P Anti-p Collisions at S**1/2
Title | Search for Exclusive Z Boson Production and Observation of High Mass P Anti-p ---] Gamma Gamma Anti-p ---] Pl+ L- Anti-p Events in P Anti-p Collisions at S**1/2 PDF eBook |
Author | |
Publisher | |
Pages | 7 |
Release | 2009 |
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We present a search for exclusive Z boson production in proton-antiproton collisions at √s = 1.96 TeV, using the CDF II detector at Fermilab. We observe no exclusive Z → l+l− candidates and place the first upper limit on the exclusive Z cross section in hadron collisions, [sigma]{sub excl}(Z) 0.96 pb at 95% confidence level. In addition, we observe eight candidate exclusive dilepton events from the quantum electrodynamic process p{bar p} → p[gamma][gamma]{bar p} → pl+l− {bar p}, and measure the cross section for M{sub l{ell}} 40 GeV=c2 and.
Energy Research Abstracts
Title | Energy Research Abstracts PDF eBook |
Author | |
Publisher | |
Pages | 770 |
Release | 1986 |
Genre | Power resources |
ISBN |
W and Z Boson Production with Jets and Inclusive Jet Production in P Pbar Collisions at Square Root S
Title | W and Z Boson Production with Jets and Inclusive Jet Production in P Pbar Collisions at Square Root S PDF eBook |
Author | |
Publisher | |
Pages | 9 |
Release | 1996 |
Genre | |
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The production properties of jets produced in p{ovr p} collisions at (square root)s = 1.8 TeV have been measured using the CDF detector. The data are compared to predictions of leading order and next to leading order QCD predictions. Both inclusive jets and those produced in association with W and Z bosons are used for this analysis. In general, good agreement with QCD predictions is found except for very high E{sub t} inclusive jets. 10 refs., 7 figs., 2 tabs.
Search for the Production of the Standard Model Z Boson in Association with W Boson in P - Anti-p Collisions at 1.96 TeV Center of Mass Energy
Title | Search for the Production of the Standard Model Z Boson in Association with W Boson in P - Anti-p Collisions at 1.96 TeV Center of Mass Energy PDF eBook |
Author | |
Publisher | |
Pages | 162 |
Release | 2010 |
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The search for the production of the Standard Model Z boson in association with a W boson is motivated and discussed. This is performed using 4.3 fb−1 of Tevatron Run II data collected with the CDF detector in (square root)s = 1.96 TeV proton anti-proton collisions. This is a signature-based analysis where the W boson decays semileptonically into a high-P{sub T} electron or muon plus a neutrino, and where the Z boson decays into two b quark jets (b-jets). We increase the signal-to-background ratio by identifying the b-quarks in the jets with a new neural network-based algorithm. Another neural network then uses kinematic information to distinguish WZ to further increase the signal-to-background ratio. Since our sensitivity is still not enough to achieve an observation, we set a 95% Confidence Level upper limit on the product of the WZ production cross section and its branching fraction to the decay products specified above, and express it as a ratio to the theoretical Standard Model prediction. The resulting limit is 3.9 x SM (3.9 x SM expected).