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Search For W And Z Bosons In The Reaction Anti P P 2 Jets Gamma At Su
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Book Synopsis Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**1/2 by :
Download or read book Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**1/2 written by and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**ư by :
Download or read book Search for W and Z Bosons in the Reaction Anti-p P ---] 2 Jets + Gamma at S**ư written by and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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 by :
Download or read book 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 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 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.
Book Synopsis 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 by :
Download or read book 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 written by and published by . This book was released on 2010 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Search for Hadronic Decays of W and Z Bosons in Photon Events in P Anti-p Collisions at S**1/2 by :
Download or read book Search for Hadronic Decays of W and Z Bosons in Photon Events in P Anti-p Collisions at S**1/2 written by and published by . This book was released on 2008 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production Properties of Z Bosons with Jets in 1.8 TeV Anti Pp Collisions by :
Download or read book Production Properties of Z Bosons with Jets in 1.8 TeV Anti Pp Collisions written by and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Particles Leading to Z+jets Final States in P Anti-p Collisions at S**ư by :
Download or read book Search for New Particles Leading to Z+jets Final States in P Anti-p Collisions at S**ư written by and published by . This book was released on 2007 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of a search for new particles that lead to a Z boson plus jets in p{bar p} collisions at √s = 1.96 TeV using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of 1.06 fb−1 collected using Z boson decays to ee and?? is used. We describe a completely data-based method to predict the dominant background from standard-model Z+jet events. This method can be similarly applied to other analyses requiring background predictions in multi-jet environments, as shown when validating the method by predicting the background from W+jets in t{bar t} production. No significant excess above the background prediction is observed, and a limit is set using a fourth generation quark model to quantify the acceptance. Assuming BR(b′ → bZ) = 100% and using a leading-order calculation of the b′ cross section, b′ quark masses below 268 GeV/c2 are excluded at 95% confidence level.
Book Synopsis W and Z Boson Production with Jets and Inclusive Jet Production in P Pbar Collisions at Square Root S by :
Download or read book W and Z Boson Production with Jets and Inclusive Jet Production in P Pbar Collisions at Square Root S written by and published by . This book was released on 1996 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 1386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis W and Z Bosons in Association with Two Jets Using the POWHEG Method by :
Download or read book W and Z Bosons in Association with Two Jets Using the POWHEG Method written by and published by . This book was released on 2013 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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**ư by :
Download or read book 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**ư 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 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 → ll− candidates and place the first upper limit on the exclusive Z cross section in hadron collisions,?{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??{bar p} → pl+l− {bar p}, and measure the cross section for M{sub l{ell}} 40 GeV=c2 and.
Book Synopsis Measurement of the Associated Production of Z Bosons and Jets in P-pbar Collisions at the Tevatron by :
Download or read book Measurement of the Associated Production of Z Bosons and Jets in P-pbar Collisions at the Tevatron written by and published by . This book was released on 2009 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Higher order QCD corrections to W and Z boson production do not only manifest themselves in the generation of high transverse momenta of the weak bosons, but these QCD effects become directly visible in the production of jets in association with the weak bosons. Studying these processes is not only interesting from the perspective of testing perturbative QCD, but also to constrain a major background to many Standard Model (SM) of non-SM physics signals, e.g. top pair and single top production, searchers for the Higgs boson, leptoquarks and supersymmetric particles. This thesis describes a measurement of Z/[gamma]* + jets production in p$\bar{p}$ collisions at √s = 1.96 TeV in the decay channel Z/[gamma]* → [mu]+[mu]-. An integrated luminosity of L≈ 1fb-1 collected by the D0 detector at the Tevatron between August 2002 and February 2006 has been used. Differential production cross sections as function of the transverse energy of the first, second and third leading jet are measured. The distributions are corrected for acceptance and migration effects back to hadron level using an iterative unfolding method. Comparison of the measured cross sections to event generators, which include part of the higher order corrections are presented.
Book Synopsis Search for the Production of ZW and ZZ Boson Pairs Decaying Into Charged Leptons and Jets in Proton-antiproton Collisions at Sqrt[s] by :
Download or read book Search for the Production of ZW and ZZ Boson Pairs Decaying Into Charged Leptons and Jets in Proton-antiproton Collisions at Sqrt[s] written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the production cross section for ZW and ZZ boson pairs in final states with a pair of charged leptons, from the decay of a Z boson, and at least two jets, from the decay of a W or Z boson, using the full sample of proton-antiproton collisions recorded with the CDF II detector at the Tevatron, corresponding to 8.9 fb(̂-1) of integrated luminosity. We increase the sensitivity to vector boson decays into pairs of quarks using a neural network discriminant that exploits the differences between the spatial spread of energy depositions and charged-particle momenta contained within the jet of particles originating from quarks and gluons. Additionally, we employ new jet energy corrections to Monte Carlo simulations that account for differences in the observed energy scales for quark and gluon jets. The number of signal events is extracted through a simultaneous fit to the dijet mass spectrum in three classes of events: events likely to contain jets with a heavy-quark decay, events likely to contain jets originating from light quarks, and events that fail these identification criteria. We determine the production cross section to be 2.5 +2.0 -1.0 pb (
Book Synopsis Search for Hadronic Decays of W and Z Bosons in Photon Events in P Anti-p Collisions at S**ư by :
Download or read book Search for Hadronic Decays of W and Z Bosons in Photon Events in P Anti-p Collisions at S**ư written by and published by . This book was released on 2008 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Physics Coupling to the Z Boson by : Adam Liddle Scott
Download or read book Search for New Physics Coupling to the Z Boson written by Adam Liddle Scott and published by ProQuest. This book was released on 2007 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of two searches for new particles that couple Z bosons in pp collisions at s = 1.96 TeV using the Collider Detector at Fermilab (CDF). In the first, we search for a long-lived parent of the Z boson using a data sample with a luminosity of 163 pb-1. Finding no significant excess above background, we set a limit on a fourth generation model as a function of mass and lifetime. In the second, we search for a particle that decays to a Z boson in conjunction with jets using a data sample with a luminosity of 1.06 fb-1. Finding no significant excess above background, we set a limit on a fourth generation model as a function of mass.
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