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Qcd And Jets At Cdf
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Download or read book QCD and Jets at CDF. written by and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of QCD results from the Collider Detector at Fermilab is presented. Comparisons are made to leading order, O([alpha]{sub s}2), and next-to-leading order, O([alpha]{sub s}3), parton level calculations and to leading logarithm shower Monte Carlo results.
Book Synopsis Testing QCD with Jet Physics at CDF. by :
Download or read book Testing QCD with Jet Physics at CDF. written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jets at CDF. written by Michele Gallinaro and published by . This book was released on 2006 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent jet results in p{bar p} collisions at {radical}s = 1.96 TeV from the CDF experiment at the Tevatron are presented. The jet inclusive cross section is compared to next-to-leading order QCD prediction in different rapidity regions. The b-jet inclusive cross section is measured exploiting the long lifetime and large mass of B-hadrons. Jet shapes, W+jets and W/Z+photon cross sections are also measured and compared to expectations from QCD production.
Download or read book QCD Tests at CDF. written by and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results for the inclusive jet cross section and the dijet mass distribution. The inclusive cross section and dijet mass both exhibit significant deviations from the predictions of NLO QCD for jets with E{sub T}>200 GeV, or dijet masses> 400 GeV/c2. We show that it is possible, within a global QCD analysis that includes the CDF inclusive jet data, to modify the gluon distribution at high x. The resulting increase in the jet cross-section predictions is 25-35%. Owing to the presence of k{sub T} smearing effects, the direct photon data does not provide as strong a constraint on the gluon distribution as previously thought. A comparison of the CDF and UA2 jet data, which have a common range in x, is plagued by theoretical and experimental uncertainties, and cannot at present confirm the CDF excess or the modified gluon distribution.
Download or read book QCD Physics at CDF. written by and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of jet production and isolated prompt photon production in p{bar p} collisions at √s = 1.8 TeV from the 1988--89 run of the Collider Detector at Fermilab (CDF). To test QCD with jets, the inclusive jet cross section (p{bar p} → J + X) and two jet angular distributions (p{bar P} → JJ + X) are compared to QCD predictions and are used to search for composite quarks. The ratio of the scaled jet cross sections at two Tevatron collision energies (√s= 546 and 1800 GeV) is compared to QCD predictions for X{sub T} scaling violations. Also, we present the first evidence for QCD interference effects (color coherence) in third jet production (p{bar p} → JJJ + X). To test QCD with photons, we present measurements of the transverse momentum spectrum of single isolated prompt photon production (p{bar p} → [gamma] + X), double isolated prompt photon production (p{bar p} → [gamma][gamma] + X), and the angular distribution of photon-jet events (p{bar p} → [gamma] J + X). We have also measured the isolated production ratio of [eta] and [pi]° mesons (p{bar p} → [eta] + X)/(p{bar p} → [pi]° + X) = 1.02 ± .15(stat) ± .23(sys).
Book Synopsis QCD Tests and New Physics Search with Jets at CDF. by :
Download or read book QCD Tests and New Physics Search with Jets at CDF. written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dijet invariant mass spectrum at a center of mass energy √s = 1.8 TeV measured at the Tevatron Collider by CDF in the 1988--1989 run is presented. Comparison with leading order and next-to-leading order QCD theoretical calculation is performed. A search for a possible quark compositeness and for axigluons, while not showing evidence for new physics, allows one to put limits on the compositeness mass scale [Kappa]{sub c} and on the axigulon mass M{sub a}. Preliminary results for the inclusive jet and the total transverse energy cross section from the high statistics data collected in the present run are shown.
Download or read book Jet Physics at CDF. written by and published by . This book was released on 1997 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present high E{sub T} jet measurements from CDF at the Fermilab Tevatron Collider. The incfilusive jet cross section at √s = 1800 GeV with - 5 times more data is compared to the published CDF results, preliminary D0 results, and next-to-leading order QCD predictions. The ∑E{sub T} cross section is also compared to QCD predictions and the dijet angular distribution is used to place a limit on quark compositeness. The inclusive jet cross section at √s = 630 GeV is compared with that at 1800 GeV to test the QCD predictions for the scaling of jet cross sections with √s. Finally, we present momentum distributions of charged particles in jets and compare them to Modified Leading Log Approximation predictions.
Download or read book Fragmentation of CDF Jets written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented are the most recent jet fragmentation results from CDF: inclusive distributions of charged particle momenta and their k{sub T} in jets; average track multiplicities, as well as angular distributions of multiplicity flow, for a wide range of jet energies with E{sub T} from 40 to 300 GeV. The results are compared with Monte-Carlo and, when possible, analytical calculations performed in resumed perturbative QCD approximations (MLLA).
Book Synopsis Tests of Perturbative QCD at CDF. by :
Download or read book Tests of Perturbative QCD at CDF. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The inclusive jet cross-section measured by CDF is in excellent agreement with NLO QCD below E[sub T] of 200 GeV. Above 200 GeV the measured cross-section begins to deviate from the QCD predictions with an excess of 20-50% in the 260-360 GeV range. A similar excess is observed in the two-jet mass distribution and the[Sigma] E[sub T] cross-section. The prompt photon cross-section from the CDF is in qualatative agreement with next-to-leading order QCD but has a steeper slope at low p[sub T]. Recent studies suggest that addition of soft radiation to NLO QCD may steepen the cross-section at low p[sub T].
Download or read book ברכה לצועד written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jets in CDF. written by and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 1988/89 Tevatron Collider run the CDF experiment collected 4.0 {plus minus} 0.3 pb−1 of proton-antiproton interactions at a center-of-mass collision energy currently available in the laboratory and gives us a unique opportunity for studying Quantum Chromodymanics (QCD) processes at the highest available energies. We report results from various QCD studies performed with this data. 11 refs., 8 figs.
Download or read book High E{sub {Tau}} Jets at CDF. written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of QCD tests using hadronic jets from hard parton-parton collisions at the Fermilab Tevatron are presented. CDF has measured the inclusive jet cross-section as a function of jet transverse energy and collision center of mass energy. The angular distribution of dijet production has also been measured.
Book Synopsis '96 QCD and High Energy Hadronic Interactions by : J. Thanh Van Tran
Download or read book '96 QCD and High Energy Hadronic Interactions written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1996 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book QCD Tests with CDF. written by and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement of scaling violations, the inclusive photon and diphoton cross sections as well as the photon-jet and jet-jet angular distributions are discussed and compared to leading order and next-to-leading order QCD. A study of four-jet events is described, with a limit on the cross section for double parton scattering. The multiplicity of jets in W boson events is compared to theoretical predictions.
Download or read book Programma written by and published by . This book was released on 1976 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Results from CDF. written by and published by . This book was released on 1991 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from CDF in jet physics are presented. Tests of leading order and next to leading order QCD are performed by measuring the dijet invariant mass spectrum, jet shapes and three jet events. Tests the leading logarithm, approximation in QCD are made by comparing the high energy events at CDF with the Herwig Monte Carlo. 10 refs., 7 figs.
Book Synopsis Collection, A New, of Fourty-four Cotillons ... by :
Download or read book Collection, A New, of Fourty-four Cotillons ... written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
