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Showing 1 to 20 of 40 for “"Tevatron"”.
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Model independent search for new physics at the Tevatron
The Standard Model of elementary particles can not be the final theory. There are theoretical reasons to expect the appearance of new physics, possibly at the energy scale of few TeV. Several possible theories of new physics have been proposed, each with unknown probability to be confirmed. Instead …
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The ruins of science : whatever happened to the Tevatron?
The Tevatron was the world's highest energy particle accelerator for more than two decades. Built at Fermi National Accelerator Laboratory in Batavia, Illinois in the early 1980s, the machine accelerated protons and antiprotons through its 4.26-mile ring of magnets and smashed them together in one …
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Angular correlations in beauty production at the Tevatron at root s= 1.96 TeV
Contains fulltext : 26943_angucoinb.pdf (Publisher’s version ) (Open Access) Contains fulltext : 33291.pdf (Publisher’s version ) (Open Access)
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A quasi-model-independent search strategy for new high-pT physics at Tevatron Run II
… an energy regime accessible to the Fermilab Tevatron. Unfortunately, predictions for the form that new physics will take are all over the map. A quasi-model-independent search strategy for new physics (SLEUTH) was introduced in Tevatron Run I to allow a probe of high-pT hadron collider data. …
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The Higgs boson in the Standard Model : theoretical constraints and a direct search in the WH channel at the Tevatron
… Pour rechercher le boson de Higgs au Tevatron, la production associée avec un boson W est l'un des canaux les plus sensibles pour une masse inférieure à 130 GeV. On analyse 5,3 fb-1 de données D0-Tevatron, en recherchant un boson W qui se désintègre en un lepton et un neutrino. Le …
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Placing limits on the Higgs production cross section at the tevatron using the H to W+W- to l+l- decay channel
… on the Higgs production crosssection at the Tevatron were placed using data with an integrated luminosity of 2.4 fb−1 from CDF. Limits over a Higgs mass range between 110 GeV and 200 GeV were determined, by calculating a limit at ten mass points distributed over this region. The analysis …
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Testing the Standard Model with Top-Quark Production
… to top-quark production at the Fermilab Tevatron, allowing for arbitrary left-right mixing of the squarks. We find that the correction is significant for several combinations of gluino and squark masses, e.g. +33% for m8= 200 GeV, m;-= mq= 75 GeV. Single-top-quark production at hadron …
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Testing the Standard Model With Top Quark Production
… for studying single-top-quark production at the Tevatron and LHC. We find that there may be evidence for single-top-quark production in Run I data. Run II at the Tevatron should allow the W-gluon fusion cross section to be measured to $\pm$22% with 2 fb$\sp{-1}$ of data. The LHC will have a …
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Search for the Higgs Boson in H->WW Decays at the D0 Experiment and Precise Muon Tracking
… with data taken at the D0 experiment at the Tevatron collider. The data set was taken between April 2002 and September 2003 and has an integrated luminosity of approximately 147 pb^-1. An analysis of the di-muon decay channel of the W pairs was developed which can be scaled to higher …
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Measurements of s(V+D*)/s(V) in 9.7 fb-1 at CDF Run II
… in events with zero jet objects at the Tevatron, and the first measurement of W/Z+c production with pT(c) < 15 GeV at the Tevatron.
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Direct Measurement of the W Boson Decay Width in Proton-Antiproton Collisions at sqrt(s)=1.96 TeV
… width, using the DZero detector at the Fermilab Tevatron Collider. The measurement uses an integrated luminosity of 177.3 pb-1 data, collected during the 2002-2003 run. The width is determined from the shape of the transverse mass distribution, MT, by fitting the data in the tail region …
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W mass measurement with muons at SQRT.S. = 1.8 TeV
… \nu$ decays in the CDF detector at the Fermilab Tevatron $\bar p p$ collider. The mass is 79.90 $\pm$ 0.53(stat.) $\pm$ 0.31(sys.) $\pm$ 0.16(scale) GeV/c$\sp2$. When this result is combined with previous CDF measurements, sin$\sp2\theta\sb{W}$ is determined to be 0.231 $\pm$ 0.008. These …
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A measurement of the mass of the W vector boson from antiproton proton going to charged W boson going to muon muon neutrino at 1.8 TeV
… during the 1992-93 collider run at the Fermilab Tevatron with the CDF detector. A fit to the transverse mass spectrum of a sample of 3268 $\rm W\to\mu\nu$ events from 19.7 $\rm pb\sp{-1}$ of data yields a mass of $M\sbsp{W}{\mu} = 80.310 \pm 0.205$ (stat.) $\pm$ 0.120 (syst.) $\pm$ 0.050 (scale). …
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HIGH ENERGY RESUMMATION IN PERTURBATIVE QCD
… NLO computations, and their implications at the Tevatron and at the LHC are explored. The effects of resummation are compared to various sources of theoretical uncertainties like PDFs and scale variations. We show how the high--energy resummation procedure stabilizes the logarithmic enhancement …
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Observation of W [right arrow] [mu][nu] decays in proton-antiproton collisions at [square root]s = 1.8 TeV
… center-of-mass energy of 1.8 TeV at the Fermilab Tevatron collider. Details of the CDF detector are given and event selection criteria are developed. A cross section times branching ratio, based on a sample of three W --+ J-lV candidate events extracted from 27.2 ± 4.1 nb-1 of data taken in the …
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A measurement of the inclusive differential Drell-Yan cross-section with dimuons at sqrt.s = 1.8 TeV
… energy of $\sqrt{s}$ = 1.8 TeV at the Fermilab Tevatron collider. The dimuon events are accepted in the central pseudorapidity region of $-0.6<\eta<0.6$ of the CDF detector. The differential cross section $d\sigma/dMdY\vert\sb{Y=0}$ is measured for dimuon invariant masses between 11 GeV/c$\sp2$ …
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Measurement of the ratios of the branching fractions [Beta](B⁰[sigma] --> D⁻[sigma][pi]⁺ [pi]⁺[pi]⁻)/[Beta](B⁰ --> D⁻[pi]⁺ [pi]⁺[pi]⁻) and [Beta](B⁰[sigma] --> D⁻[sigma][pi]⁺)/[Beta](B⁰ --> D⁻[pi]⁺ [pi]⁺[pi]⁻).
… - 1 in pp collisions at ... TeV at the Fermilab Tevatron. Using a novel displaced track trigger we reconstruct 494 ± 28 B... decays, 8098 ± 114 B... decays, 159 ± 17 B... decays, and 3288 ± 76 B... decays. Using the world average value of the ... production ratio fs/fd = 0.259 ± 0.038, we …
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A search for the lightest supersymmetric partner of the top quark at DO
… energy of 1.96 TeV at the Fermilab Tevatron collider. The scalar top quarks are assumed to decay into a b quark, a charged lepton and a scalar neutrino ( n&d5; ), and the search is performed in the electron plus muon final state. No significant excess of events above the standard …
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Measurement Of Angular Coefficients Of Drell-Yan E(+) E(-) Pairs In Ppbar Collisions At Square Root Of Center Of Mass Energy Of 1.96 Tev.
… root of center of mass energy of 1.96 TeV at the Tevatron. For this analysis, we have used the Run IIb2 dataset collected with the DΦ detector. The angular distributions as a function of the transverse momentum of the electron-positron pair are studied, and the Lam-Tung relation, valid only for a …
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Measurement of Z Boson Transverse Momentum In Proton-Antiproton Collisions At sqrt(s)=1.96 TeV
… 976 pb$^{-1}$ of data collected at the Fermilab Tevatron collider with the D\O\ detector. The shape is measured both for the inclusive sample and for the subset of events containing a boson with large rapidity. The large-rapidity distribution shows better agreement with theory when the …
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