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Measurement Of W Production In The W To Muon Decay Channel In Proton Anti Proton Collisions At U221as
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Book Synopsis Associated Production of W + Charm in 13 TeV Proton-Proton Collisions Measured with CMS and Determination of the Strange Quark Content of the Proton by : Svenja Karen Pflitsch
Download or read book Associated Production of W + Charm in 13 TeV Proton-Proton Collisions Measured with CMS and Determination of the Strange Quark Content of the Proton written by Svenja Karen Pflitsch and published by Springer Nature. This book was released on 2020-08-18 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The associated production of a W boson and a single charm quark (W+c) is the only process in proton-proton collisions that directly probes the strange quark content of the proton. In this thesis, W+charm production is measured in proton-proton collisions at the LHC at 13 TeV, as recorded by the Compact Muon Solenoid (CMS) experiment. The analysis focuses on the identification of W bosons in their leptonic decay to a muon and a neutrino and charm quarks are tagged via the full reconstruction of D*-Mesons. The measured cross sections of W+c production are used, in combination with other relevant CMS results and the most precise HERA DIS data, in a QCD analysis to determine the strange quark content of the proton. The resulting strange quark distribution and suppression, with respect to the other light sea quarks, are in good agreement with those obtained in neutrino scattering experiments and extend their kinematic reach.
Book Synopsis Antiproton Proton Physics and the W Discovery by : J. Thanh Van Tran
Download or read book Antiproton Proton Physics and the W Discovery written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1983 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proton-antiproton Collider Physics by : G. Altarelli
Download or read book Proton-antiproton Collider Physics written by G. Altarelli and published by World Scientific. This book was released on 1989 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reviews the physics studied at the CERN proton-antiproton collider during its first phase of operation, from the first physics run in 1981 to the last one at the end of 1985.The volume consists of a series of review articles written by physicists who are actively involved with the collider research program. The first article describes the proton-antiproton collider facility itself, including the antiproton source and its principle of operation based on stochastic cooling.The subsequent six articles deal with the various physics subjects studied at the collider. Each article describes in detail the experimental results on a particular subject, and also provides the theoretical framework necessary for their interpretation. Finally the last two articles discuss the physics expectations from the improved collider (the so-called ACOL program, which has just started operation), and also from the next generation of ?supercolliders? which are being considered both in Europe and in the United States America.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781719376280 Total Pages :50 pages Book Rating :4.3/5 (762 download)
Book Synopsis Pion, Kaon, Proton and Antiproton Production in Proton-Proton Collisions by : National Aeronautics and Space Administration (NASA)
Download or read book Pion, Kaon, Proton and Antiproton Production in Proton-Proton Collisions written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inclusive pion, kaon, proton, and antiproton production from proton-proton collisions is studied at a variety of proton energies. Various available parameterizations of Lorentz-invariant differential cross sections as a function of transverse momentum and rapidity are compared with experimental data. The Badhwar and Alper parameterizations are moderately satisfactory for charged pion production. The Badhwar parameterization provides the best fit for charged kaon production. For proton production, the Alper parameterization is best, and for antiproton production the Carey parameterization works best. However, no parameterization is able to fully account for all the data. Norbury, John W. and Blattnig, Steve R. Langley Research Center ANTIPROTONS; KAONS; PROTON ENERGY; SCATTERING CROSS SECTIONS; PIONS; PARAMETERIZATION; TRANSVERSE MOMENTUM
Book Synopsis Antiproton-Nucleon and Antiproton-Nucleus Interactions by : F. Bradamante
Download or read book Antiproton-Nucleon and Antiproton-Nucleus Interactions written by F. Bradamante and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third course of the International School on Physics with Low Energy Antiprotons was held in Erice, Sicily at the Ettore Majorana Centre for Scientific Culture, from 10 to 18 June, 1988. The School is dedicated to physics accessible to experiments using low energy antiprotons, especially in view of operation of the LEAR facility at CERN with the upgraded antiproton source AAC (Antiproton Accumulator AA and Antiproton Collector ACOL). The first course in 1986 covered topics related to fundamental symmetries; the second course in 1987 focused on spectroscopy of light and heavy quarks. This book con tains the Proceedings of the third course, devoted to the experimental and theoretical aspects of the interaction of antinucleons with nucleons and nuclei. The Proceedings contain both the tutorial lectures and contributions presented by participants during the School. The papers are organized in several sections. The first section deals with the theoretical aspects of NN scattering and annihilation, and the underlying QCD. The experimental techniques and results concerning NN scattering are contained in Section II. Section III contains theoretical reviews and contributions on anti proton-nucleus scattering and bound states. Section IV is devoted to the experimental results on the antiproton nucleus systems and their phenomenological analysis. Finally, some possible developments of the antiproton machines are presented.
Book Synopsis New Aspects of High-Energy Proton-Proton Collisions by : A. Ali
Download or read book New Aspects of High-Energy Proton-Proton Collisions written by A. Ali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Articles focus on the planned European proton-proton collider, and concentrate on physics issues, rather than the more technical concerns addressed in the three previous workshops. The use of energies much higher than those of the American Superconducting Super Collider is featured. Topics include reviews of current projects, hadron collisions, lep
Book Synopsis Low Energy Antiproton Physics - Proceedings Of The Third Biennial Confr Physics by : Gabrijel Kernel
Download or read book Low Energy Antiproton Physics - Proceedings Of The Third Biennial Confr Physics written by Gabrijel Kernel and published by World Scientific. This book was released on 1995-09-15 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings cover the latest results in low energy antiproton physics. The volume consists of invited talks and invited contributions on the following subjects: nucleon-antinucleon interactions, antiprotons in astrophysics, meson spectroscopy, strangeness and charm production, antinucleon-nucleus interactions, fundamental symmetries, antiproton facilities, atomic physics with antiprotons, antihydrogen-facilities and experiments.
Book Synopsis A Measurement of the T T_bar Production Cross Section in Proton-antiproton Collisions at Sqrt(s) by : Markus Klute
Download or read book A Measurement of the T T_bar Production Cross Section in Proton-antiproton Collisions at Sqrt(s) written by Markus Klute and published by . This book was released on 2004 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The First Measurement of the Differential Cross-section of Electroweak W[plus][minus]W[plus][minus]jj Production at 13 TeV with the ATLAS Detector by : Shalu Solomon
Download or read book The First Measurement of the Differential Cross-section of Electroweak W[plus][minus]W[plus][minus]jj Production at 13 TeV with the ATLAS Detector written by Shalu Solomon and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Vector boson scattering is one of the recent remarkable observations at the Large Hadron Collider. The longitudinal polarization modes of the massive vector bosons are strongly tied to the electroweak symmetry breaking mechanism. With the Standard Model predicted Higgs boson playing a crucial role in regularizing the scattering amplitude of these longitudinally polarized bosons, vector boson scattering is a pivotal process in experimentally probing the symmetry breaking mechanism. A golden channel for measuring vector boson scattering at the collider is the electroweak production of two $W$ bosons with the same electric charges. Owing to its largest quark- to gluon- induced production ratio among other di-boson combinations, the process was also the first target of the ATLAS vector boson scattering program, with evidence made in 2014 and observation in 2019. This thesis presents the first measurement of the differential cross-section with the ATLAS experiment at $\sqrt{s}=13$\,TeV using 139\,fb$^{-1}$ datasets of proton-proton collisions. The process is studied in the leptonic decay channels of the $W$ bosons, effectively suppressing many Standard Model backgrounds. The process $pp \rightarrow l^{\pm} \nu l^{\pm} \nu jj $ is measured with the final state consisting of two leptons of like charges, two jets, and missing transverse energy. The characteristic vector boson scattering signature of two tagging jets, with a large di-jet invariant mass, separated by large angles, is used to tag electroweak-induced production. A combination of Monte Carlo-based predictions and data-driven approaches is used to estimate the various backgrounds. A statistical model of profile likelihood is used to constrain the background predictions and reduce the uncertainties following which the events are unfolded, and the cross-section is extracted. The fiducial differential cross-sections are measured in the leptonic channel as a function of several kinematic variables and are found to be consistent with the Standard Model predictions within uncertainties. An experimental precision of 10.2\% is achieved for the fiducial cross-section, and the measurement is unprecedented in precision and granularity for the process. The integrated fiducial cross-section is $3.51 \pm 0.27\,\text{(stat)}\,\pm 0.23\,\text{(syst)}\,\text{fb}$ and agrees with the leading order prediction of $2.97^{+0.28}_{-0.24}\,\text{fb} $ simulated by MadGraph+Herwig7 within uncertainties
Book Synopsis Particle Production Spanning MeV and TeV Energies by : W. Kittel
Download or read book Particle Production Spanning MeV and TeV Energies written by W. Kittel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle production is an important topic in nuclear and particle physics. At high energies, particle production is considered to proceed via parton branching and subsequent fragmentation into hadrons. The study of the dynamics of this process and the study of the structure of hadrons in the context of quantum chromodynamics (QCD) belong to the challenges of the standard model of elementary particle physics, requiring new, nonperturba tive approaches in field theory. Within a nucleus, many-body dynamics is important and particle production may be used to determine many features of a non-equilibrium quantum system at low or high temperatures. At this Advanced Study Institute the different aspects of particle pro duction were expanded upon in a series of lectures given by experts in their fields, covering topics ranging from near-threshold meson production in proton-proton collisions to correlations in multi-GeV jet fragmentation in high-energy scattering processes and signals of a quark-gluon plasma formed in ultra-relativistic heavy-ion collisions. Strong emphasis was placed not only on state of the art research, but also on the necessary physics back ground. The lectures were supplemented by problem sets and discussion sessions. There was also time for students to present short contributions on their research.
Book Synopsis Inclusive Direct Photon Production in the Central and Forward Rapidity Regions in Proton-antiproton Collisions at a Center of Mass Energy of 1800 GeV by : Steven A. Jerger
Download or read book Inclusive Direct Photon Production in the Central and Forward Rapidity Regions in Proton-antiproton Collisions at a Center of Mass Energy of 1800 GeV written by Steven A. Jerger and published by . This book was released on 1997 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spin Correlations in Tt Events from Pp Collisions by : Boris Lemmer
Download or read book Spin Correlations in Tt Events from Pp Collisions written by Boris Lemmer and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis introduces readers to the Standard Model, the top quark and its properties, before explaining the concept of spin correlation measurement. The first measurement of top quark spin correlations at the LHC in the lepton+jets decay channel is presented. As the heaviest elementary particle, the top quark plays an essential role in the Standard Model of elementary particle physics. In the case of top quarks being produced in pairs at hadron colliders, the Standard Model predicts their spins to be correlated. The degree of correlation depends on both the production mechanism and properties of the top quark. Any deviation from the Standard Model prediction can be an indicator for new physics phenomena. The thesis employs an advanced top quark reconstruction algorithm including dedicated identification of the up- and down-type quarks from the W boson decay.
Book Synopsis Parameterized Cross Sections for Pion Production in Proton-Proton Collisions by : Steve R. Blattnig
Download or read book Parameterized Cross Sections for Pion Production in Proton-Proton Collisions written by Steve R. Blattnig and published by . This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Heavy Charged Bosons and Measurement of High-Mass Drell-Yan Production in Proton—Proton Collisions by : Markus Zinser
Download or read book Search for New Heavy Charged Bosons and Measurement of High-Mass Drell-Yan Production in Proton—Proton Collisions written by Markus Zinser and published by Springer. This book was released on 2019-12-10 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents two analyses, the first of which involves the search for a new heavy charged gauge boson, a so-called W' boson. This new gauge boson is predicted by some theories extending the Standard Model gauge group to solve some of its conceptual problems. Decays of the W' boson in final states with a lepton (l± = e± , μ±) and the corresponding (anti-)neutrino are considered. Data collected by the ATLAS experiment in 2015 at a center of mass energy of √s =13 TeV is used for the analysis. In turn, the second analysis presents a measurement of the double-differential cross section of the process pp->Z/gamma^* + X -> l^+l^- + X, including a gamma gamma induced contribution, at a center of mass energy of sqrt{s} = 8 TeV. The measurement is performed in an invariant mass region of 116 GeV to 1500 GeV as a function of invariant mass and absolute rapidity of the l^+l^-- pair, and as a function of invariant mass and pseudorapidity separation of the l^+l^-- pair. The data analyzed was recorded by the ATLAS experiment in 2012 and corresponds to an integrated luminosity of 20.3/fb. It is expected that the measured cross sections are sensitive to the PDFs at very high values of the Bjorken-x scaling variable, and to the photon structure of the proton.
Book Synopsis Proceedings of the RAND Workshop on Antiproton Science and Technology, the RAND Corporation, USA, October 6-9, 1987 by : B. W. Augenstein
Download or read book Proceedings of the RAND Workshop on Antiproton Science and Technology, the RAND Corporation, USA, October 6-9, 1987 written by B. W. Augenstein and published by . This book was released on 1988 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Annihilations of Antiprotons at Rest in Hydrogen Into Three Neutral Pions by : Thomas Kozlowski
Download or read book A Study of the Annihilations of Antiprotons at Rest in Hydrogen Into Three Neutral Pions written by Thomas Kozlowski and published by . This book was released on 1971 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 8th Topical Workshop on Proton-Antiproton Collider Physics, 1-5 September 1989, Castiglione Della Pescaia, Italy by : G. Bellettini
Download or read book 8th Topical Workshop on Proton-Antiproton Collider Physics, 1-5 September 1989, Castiglione Della Pescaia, Italy written by G. Bellettini and published by World Scientific Publishing Company. This book was released on 1990 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings presents in a systematic way Top searches, Jets, Gauge Boson production, precision tests of electroweak theory, Ln s Physics, heavy Flavours and exotics. In addition, contributions to the sessions 'News from the World', 'Short term future' and 'Long term future' show the progress of SSC in USA, of LHC at CERN, UNK/VLEPP in USSR together with Perspectives of Hadron Collider Physics.
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