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Measurement Of The Strong Coupling Constant From Inclusive Jet Production At The Tevatron Collider
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Book Synopsis Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron Collider by : Christina Mesropian
Download or read book Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron Collider written by Christina Mesropian and published by . This book was released on 2000 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Physics at the Tevatron written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent analyses by the CDF and D0 Collaborations of jet data produced in p{bar p} collisions at the Fermilab Tevatron Collider are presented. These include new studies of the inclusive jet production cross section, a measurement of the strong coupling constant, the first measurement of subjet multiplicity of quark and gluon jets, examination of ratios of multijet cross sections and their implications for choice of renormalization scale, and a study of charged jet evolution and energy flow in the underlying event. The results are compared to theoretical predictions.
Book Synopsis Jet Physics at the LHC by : Klaus Rabbertz
Download or read book Jet Physics at the LHC written by Klaus Rabbertz and published by Springer. This book was released on 2016-10-11 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest experimental results on jet physics from proton-proton collisons at the LHC. Jets allow to determine the strong coupling constant over a wide range of energies up the highest ones possible so far, and to constrain the gluon parton distribution of the proton, both of which are important uncertainties on theory predictions in general and for the Higgs boson in particular.A novel approach in this book is to categorize the examined quantities according to the types of absolute, ratio, or shape measurements and to explain in detail the advantages and differences. Including numerous illustrations and tables the physics message and impact of each observable is clearly elaborated.
Book Synopsis A Study of the Strong Coupling Constant Using W+ Jets Processes by :
Download or read book A Study of the Strong Coupling Constant Using W+ Jets Processes written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Strong Coupling Constant [alpha][subscript S] from Jet Production in W [right Arrow] E[nu] Events by : Michael Allen Lindgren
Download or read book Measurement of the Strong Coupling Constant [alpha][subscript S] from Jet Production in W [right Arrow] E[nu] Events written by Michael Allen Lindgren and published by . This book was released on 1990 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Strong Coupling Constant from Multi-jet Production with the ATLAS Detector by : Marc-André Dufour
Download or read book Determination of the Strong Coupling Constant from Multi-jet Production with the ATLAS Detector written by Marc-André Dufour and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The strong coupling constant alpha_S is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using 38 pb -1 of data recorded by the ATLAS detector. An inclusive jet production ratio distribution is used to reduce parton distribution functions dependence and measure the coupling strength at energy scales between 100 GeV and 1.5 TeV. The value of the strong coupling constant alpha_S(MZ) is measured to be 0.111 +0.016_-0.012, in agreement with similar measurements performed at hadron colliders and the world average value. Results are also consistent with the running of the coupling as predicted by Quantum Chromodynamics, tested for the first time at energy scales greater than 209 GeV.
Book Synopsis Determination of the Strong Coupling Constant ([alpha][sub S] and a Test of Perturbative QCD Using W + Jets Processes in the D0 Detector by :
Download or read book Determination of the Strong Coupling Constant ([alpha][sub S] and a Test of Perturbative QCD Using W + Jets Processes in the D0 Detector written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The D0 experiment has accumulated data for a study of inclusive W production corresponding to a total integrated luminosity of 14.3 [plus-minus] 1.7 pb[sup [minus]1] during the 1992--1993 Fermilab Tevatron collider run. The total number of W [yields] e + [nu] candidates is 9770. The ratio of the number of W + 1 jet events to that of W + 0 jet events has been measured as a function of jet minimum E[sub T]. Using this ratio the strong coupling constant, [alpha][sub s] at Q[sup 2] = M[sub W][sup 2] is measured to be [alpha][sub s](M[sub W][sup 2]) = 0.124 [plus-minus] 0.005(stat) [plus-minus] 0.006(MC) [plus-minus] 0.008(theory)[sub [minus]0.022][sup +0.026](sys) or ([sub [minus]0.025][sup +0.028] combined) with a jet minimum E[sub T] of 25 GeV. A quantitative test of perturbative QCD has been made by comparing the experimentally measured ratio with the theoretical predictions. The theoretical predictions of the ratio in both the leading order and next-to-leading order are in good agreement with the measured ratio.
Book Synopsis QCD Results from the Fermilab Tevatron Proton-antiproton Collider by :
Download or read book QCD Results from the Fermilab Tevatron Proton-antiproton Collider written by and published by . This book was released on 2010 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected recent quantum chromodynamics (QCD) measurements are reviewed for Fermilab Run II Tevatron proton-antiproton collisions studied by the Collider Detector at Fermilab (CDF) and D0 Collaborations at a centre-of-mass energy of √s = 1.96 TeV. Tantamount to Rutherford scattering studies at the TeV scale, inclusive jet and dijet production cross-section measurements are used to seek and constrain new particle physics phenomena, test perturbative QCD calculations, inform parton distribution function (PDF) determinations, and extract a precise value of the strong coupling constant, a{sub s}(m{sub Z}) = 0.1161{sub -0.0048}{sup +0.0041}. Inclusive photon production cross-section measurements reveal an inability of next-to-leading-order (NLO) perturbative QCD (pQCD) calculations to describe low-energy photons arising directly in the hard scatter. Events with [gamma] + 3-jet configurations are used to measure the increasingly important double parton scattering (DPS) phenomenon, with an obtained effective interaction cross section of [sigma]{sub eff} = 16.4 ± 2.3 mb. Observations of central exclusive particle production demonstrate the viability of observing the Standard Model Higgs boson using similar techniques at the Large Hadron Collider (LHC). Three areas of inquiry into lower energy QCD, crucial to understanding high-energy collider phenomena, are discussed: the examination of intra-jet track kinematics to infer that jet formation is dominated by pQCD, and not hadronization, effects; detailed studies of the underlying event and its universality; and inclusive minimum-bias charged-particle momentum and multiplicity measurements, which are shown to challenge the Monte Carlo generators.
Book Synopsis W/Z+ Jets Production at the Tevatron by :
Download or read book W/Z+ Jets Production at the Tevatron written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Both the D0 and CDF experiments at Fermilab Tevatron collider at[radical]s= 1.8 TeV have accumulated over 50pb[sup -1] of data. Each experiment collected more than 50,000 W[yields] l+v and 5000 Z[yields] l+[bar l] candidates for each lepton species (e and[mu]). Using this large data sample of W and Z candidates, the two experiments are actively testing perturbative QCD predictions. Among the studies that are in progress, preliminary results of W/Z+jets characteristics, multiplicity distributions of associated jets, and a study on the determination of the strong coupling constant using the ratio of the W+1 jet to W+ 0 jet cross sections are presented.
Book Synopsis Inclusive Jet Production at Tevatron by :
Download or read book Inclusive Jet Production at Tevatron written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CDF and D0 Collaborations have measured the inclusive jet cross section using 1992--93 collider data at (square root)s = 1,800 GeV. The D0 measurement is higher than NLO QCD predictions, though within systematic uncertainties. The CDF measurement is in very good agreement with NLO QCD predictions for transverse energies (E{sub T}) below 200 GeV. However it is systemically higher than NLO QCD predictions for E{sub T} above 200 GeV. The CDF measurement of two-jet mass and total transverse energy spectra also show a similar excess above QCD predictions at higher E{sub T}.
Book Synopsis Latest Jet Results from the Tevatron by :
Download or read book Latest Jet Results from the Tevatron written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent QCD jet production measurements in p{bar p} collisions at (square root)s = 1.96 TeV at the Tevatron Collider at Fermilab are presented. Preliminary: inclusive jet, dijet, isolated photon + jet and Z + jets measurements are compared to available perturbative QCD models.
Book Synopsis Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes) by : Zygmunt Ajduk
Download or read book Proceedings Of The 28th International Conference On High Energy Physics (In 2 Volumes) written by Zygmunt Ajduk and published by World Scientific. This book was released on 1997-04-11 with total page 1878 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 28th conference from the Rochester series was the major high energy physics conference in 1996. Volume one contains short reports on new theoretical and experimental results. Volume two consists of the review talks presented in the plenary sessions.
Book Synopsis Inclusive Jet Production and Subjets at the Tevatron by :
Download or read book Inclusive Jet Production and Subjets at the Tevatron written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The D0 and CDF proton-antiproton collider experiments at the Tevatron accumulated large samples of high energy jet production data during Run I (1992- 1996). Presented here are measurements of the central inclusive jet cross section at center-of-mass energies of 1800 and 630 GeV (by the D0 and CDF experiments) and a forward).
Book Synopsis Top Quark, Heavy Flavor Physics And Symmetry Breaking, The - Proceedings Of The Xxiii International Meeting On Fundamental Physics by : Teresa Rodrigo
Download or read book Top Quark, Heavy Flavor Physics And Symmetry Breaking, The - Proceedings Of The Xxiii International Meeting On Fundamental Physics written by Teresa Rodrigo and published by World Scientific. This book was released on 1996-03-31 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This meeting discussed the experimental results and theoretical aspects in the field of high energy physics, with special reference to the top quark observation, heavy flavor physics and symmetry-breaking mechanisms. The major topics are developed in a series of course lectures.
Download or read book Inclusive Jets at the Tevatron written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from CDF and D0 collaborations on the inclusive jet cross sections at 1800 and 630 GeV and strong coupling constant are presented. The statistical uncertainties are significantly reduced relative to the previous results and experimental systematic uncertainties are comparable with the uncertainties in the theoretical predictions. Despite observed discrepancies with theory, which could be accommodated by modifications of parton distribution functions, the inclusive jet cross sections can be described by perturbative Quantum Chromodynamics.
Book Synopsis Inclusive Jet Production at the Tevatron Using the D0 Experiment by :
Download or read book Inclusive Jet Production at the Tevatron Using the D0 Experiment written by and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A preliminary measurement is presented of the inclusive jet production cross section in p{bar p} collisions at a center-of-mass energy of (square root)s = 1960GeV: The data was taken with the D0 detector and represents an integrated luminosity of (almost equal to) 900 pb−1 of Tevatron RunII data. The cross section is studied as a function of jet transverse momentum (p{sub T}) and rapidity (y) and compared to perturbative QCD predictions in next-to-leading order including two-loop threshold corrections.
Book Synopsis Deep Inelastic Scattering And Related Phenomena by : Giulio D'agostini
Download or read book Deep Inelastic Scattering And Related Phenomena written by Giulio D'agostini and published by World Scientific. This book was released on 1997-03-15 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This workshop is the fourth of a series initiated in Durham (March 93), followed by Eilat (February 94) and Paris (April 95). The large interest and the great inflow of experimental data, coming mainly from HERA, are some of the reasons behind the decision to have this annual meeting, presently the most important one for this area of research. During the workshop, experimental results and theoretical aspects have been reported on subjects, which have been organised by working groups on: 1) hadron structure functions; 2) photoproduction and photon structure; 3) diffractive interactions; 4) hadronic final states; 5) spin effects in lepton nucleon scattering; 6) special session on theoretical advances. While the contributions to the working groups offer hot material for specialists, the reports by the conveners, as well as other contributions to the plenary sessions, offer to nonspecialists a complete overview of this research field.
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