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.
Download or read book Latest Jet Results from Tevatron written by Andrea Messina and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contribution reports preliminary jet results in p{bar p} collisions at {radical}s = 1.96 TeV from the CDF and D0 experiments. The jet inclusive cross section, measured using both the Midpoint and the K{sub T} jet clustering algorithm, is compared to next-to-leading order QCD prediction in different rapidity regions. The b-jet inclusive cross section measured exploiting the long lifetime and large mass of B hadrons is presented and compared to QCD prediction. A complementary measurement, using the large branching fraction of B hadrons into muons, is also described. The measurement of two-particle momentum correlation in jets is presented and compared to predictions.
Download or read book Jet Substructure at the Tevatron And LHC written by and published by . This book was released on 2012 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implications of the Tevatron Jet Results on PDF written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a new measurement of the pseudorapidity and transverse-energy (E{sub T}) dependence of the inclusive jet production cross section in p{bar p} collisions at √s = 1:8 TeV using 95 pb−1 of data collected with the D0 detector at the Fermilab Tevatron. The differential cross section d2?/(dE{sub T}d?) is presented up to {vert_bar}?{vert_bar} = 3, significantly extending previous measurements. The results are in good overall agreement with next-to-leading order predictions from QCD, indicate a preference for certain parton distribution functions, and provide the world's best constraint on the gluon distribution at high parton momentum fraction x.
Download or read book High P sub T Jet Physics at the Tevatron Collider written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results on high[ital p[sub T]] jet physics from the CDF and D[null] experiments at the Fermilab Tevatron Collider. Recent results on the inclusive jet cross-section at[radical][ital s]= 1.8 TeV will be presented and compared with QCD. We will also present results on the dijet angular distribution. Limits on quark compositeness are presented from the CDF dijet angular distribution. Finally we will discuss the results on the inclusive jet cross section at[radical][ital s]= 0.63 TeV and tests of scaling.
Download or read book Qcd And Multiparticle Production Proceedings Of The Xxix International Symposium On Multiparticle Dynamics written by Ina Sarcevic and published by World Scientific. This book was released on 2000-07-05 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume concentrates on three main areas of current research in high energy physics: (1) multiparticle and diffractive production in perturbative and nonperturbative QCD, (2) confinement-deconfinement mechanism and the RHIC physics, and (3) interface between high-energy collisions and cosmic-ray/astro-physics. The specific topics covered include: QCD at high energies, diffractive production, and small-x physics, multiparticle production and systematics: correlations and fluctuations, hadronic final states in e+e-, lepton-hadron and hadron-hadron collisions, relativistic heavy ion collisions, interface between high-energy collisions and cosmic-ray physics, and recent development in deconfinement.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Physics written by and published by World Scientific. This book was released on 1981 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IFAE 2006 written by G. Montagna and published by Springer Science & Business Media. This book was released on 2007-04-30 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects the Proceedings of the Workshop "Incontri di Fisica delle Alte Energie (IFAE) 2006, Pavia, 19-21 Aprile 2006". The workshop is the fifth edition of a series of workshops on fundamental research in particle physics, as carried on at the most important international laboratories, and possible fallouts in medical and technological applications. Researches in this field aim at identifying the most elementary constituents of matter.
Download or read book Jet Physics and the Underlying Event at the Tevatron written by Rick Field and published by . This book was released on 2005 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tevatron Run 2 results on the inclusive jet cross section (MidPoint and K{sub T} algorithm) and the b-jet and b{bar b}-jet cross section (MidPoint algorithm) are presented and compared with theory. The CDF b-jet {bar b}-jet {Delta}{phi} distribution is compared with theory and with the D0 jet No. 1-jet No. 2 {Delta}{phi} distribution. The understanding and modeling of the ''underlying event'' in Run 2 at the Tevatron is reviewed and new CDF results are presented.
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.
Download or read book XIX International Symposium on Lepton and Photon Interactions at High Energies written by John Jaros and published by World Scientific. This book was released on 2000 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stanford University hosted the XIX International Symposium on Lepton and Photon Interactions at High Energies on August 9 - 14, 1999, at the Law School on the Stanford University Campus, the site of the previous Symposia. This volume constitutes the proceedings of the Symposium.
Download or read book Recent Results from 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: We review recent results from fixed-target and collider experiments at the Fermilab Tevatron. Among the topics discussed are jet production rates, [alpha][sub S] measurements, the[anti d]/[anti u] ratio in the proton sea, diffraction, heavy quark physics and leptoquark searches.
Download or read book Most Wanted Particle written by Jon Butterworth and published by The Experiment. This book was released on 2015-01-27 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: “A vivid account of what the process of discovery was really like for an insider.”—Peter Higgs “Butterworth is an insider’s insider. His narrative seethes with insights on the project’s science, technology and ‘tribes,’ as well as his personal (and often amusing) journey as a frontier physicist.”—Nature The discovery of the Higgs boson has brought us a giant step closer to understanding how our universe works. But before the Higgs was found, its existence was hotly debated. Even Peter Higgs, who first pictured it, did not expect to see proof within his lifetime. The quest to find the Higgs would ultimately require perhaps the most ambitious experiment in human history. Jon Butterworth was there—a leading physicist on the ATLAS project at the Large Hadron Collider in Geneva, Switzerland. In Most Wanted Particle, he gives us the first insider account of the hunt for the Higgs, and of life at the collider itself—the world’s largest and most powerful particle accelerator, 17 miles long, 20 stories underground, and designed to “replay” the original Big Bang by smashing subatomic particles at nearly the speed of light. Writing with clarity and humor, Butterworth revels as much in the hard science—which he carefully reconstructs for readers of all levels—as in the messiness, uncertainty, and humanness of science—from the media scrutiny and late-night pub debates, to the false starts and intense pressure to generate results. He captures a moment when an entire field hinged on the proof or disproof of a 50-year-old theory—and even science’s top minds didn’t know what to expect. Finally, he explains why physics will never be the same after our first glimpse of the elusive Higgs—and where it will go from here.
Download or read book Particles And Nuclei Panic 96 Proceedings Of The 14th International Conference written by Carl Carlson and published by World Scientific. This book was released on 1997-02-21 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to phenomena that are of interest to both particle and nuclear physicists. The topics include nucleon structure (including spin structure), electron, neutrino, and hadron scattering from nucleons and nuclei, strange matter, the standard model, theory of nucleons and nuclei from both the QCD and nucleon-meson viewpoints, new experimental techniques, and new facilities.
Download or read book Review of Recent Tevatron Jet W written by and published by . This book was released on 2009 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document reviews several recent measurements at the Fermilab Tevatron, including the cross sections of inclusive jet, dijet production, the cross sections of electroweak boson (W or Z) production in association with inclusive or heavy-flavor (b or c) jets, and b-jet shapes. In addition, searches for new physics using the dijet angular distributions are discussed. These analyses are based on integrated luminosities of 0.3--2.5/fb of p-{bar p} collisions at (square root)s = 1.96 TeV, collected with the CDF and D0 detectors. The results directly test the leading order and next-to leading order calculations of perturbative quantum chromodynamics and provide constraints on the parton distribution functions, gluon-splitting contribution, and physics beyond the standard model.
Download or read book Jet physics in ALICE written by Constantin Loizides and published by ibidem-Verlag / ibidem Press. This book was released on 2012-02-03 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ALICE experiment is one of the experiments currently prepared for the Large Hadron Collider (LHC) at CERN, Geneva, starting operation end of 2007. ALICE is dedicated to the research on nucleus-nucleus collisions at ultra-relativistic energies, which addresses the properties of strongly interacting matter under varying conditions of high density and temperature. The conditions provided at the LHC allow significant qualitative improvement with respect to previous studies. In particular, energetic probes, light quarks and gluons, will be abundantly produced. These probes might be identified by their fragmentation into correlated particles, so called jets, of high enough energy to allow full reconstruction of jet properties; even in the underlying heavy-ion environment.Understanding the dependence of high-energy jet production and fragmentation influenced by the dense medium created in the collision region is an open field of active research. Generally, one expects energy loss of the probes due to medium-induced gluon radiation. It is suggested that hadronization products of these, rather soft gluons may be contained within the jet emission cone, resulting in a modification of the characteristic jet fragmentation, as observed via longitudinal and transverse momentum distributions with respect to the direction of the initial parton, as well as of the multiplicity distributions arising from the jet fragmentation. Particle momenta parallel to the jet axis are softened (jet quenching), while transverse to it increased (transverse heating). The present thesis studies the capabilities of the ALICE detectors to measure these jets and quantifies obtainable rates and the quality of jet reconstruction, in both proton-proton and lead-lead collisions at the LHC. In particular, it is addressed whether modification of the jet fragmentation can be detected within the high-particle-multiplicity environment of central lead-lead collisions.
