Topic

# Quantum chromodynamics

About: Quantum chromodynamics is a research topic. Over the lifetime, 47126 publications have been published within this topic receiving 1207021 citations. The topic is also known as: QCD.

##### Papers published on a yearly basis

##### Papers

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TL;DR: In this article, the main body of predictions of the theory for deep-inleastic scattering on either unpolarized or polarized targets is re-obtained by a method which only makes use of the simplest tree diagrams and is entirely phrased in parton language with no reference to the conventional operator formalism.

Abstract: A novel derivation of the Q2 dependence of quark and gluon densities (of given helicity) as predicted by quantum chromodynamics is presented. The main body of predictions of the theory for deep-inleastic scattering on either unpolarized or polarized targets is re-obtained by a method which only makes use of the simplest tree diagrams and is entirely phrased in parton language with no reference to the conventional operator formalism.

4,692 citations

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Tohoku University

^{1}, University of Zurich^{2}, Lawrence Berkeley National Laboratory^{3}, Stanford University^{4}, College of William & Mary^{5}, University of Genoa^{6}, University of Urbino^{7}, CERN^{8}, Budker Institute of Nuclear Physics^{9}, University of California, Irvine^{10}, Cornell University^{11}, Argonne National Laboratory^{12}, ETH Zurich^{13}, Tata Institute of Fundamental Research^{14}, Hillsdale College^{15}, Spanish National Research Council^{16}, Ohio State University^{17}, University of Notre Dame^{18}, Kent State University^{19}, University of California, San Diego^{20}, University of California, Berkeley^{21}, University of Minnesota^{22}, University of Alabama^{23}, University of Helsinki^{24}, Los Alamos National Laboratory^{25}, California Institute of Technology^{26}, George Washington University^{27}, Syracuse University^{28}, Lawrence Livermore National Laboratory^{29}, Oklahoma State University–Stillwater^{30}, University of Washington^{31}, Max Planck Society^{32}, Boston University^{33}, University of California, Los Angeles^{34}, Royal Holloway, University of London^{35}, Université Paris-Saclay^{36}, Fermilab^{37}, University of Pennsylvania^{38}, University of Illinois at Urbana–Champaign^{39}, University of Bristol^{40}, University of Tokyo^{41}, University of Delaware^{42}, Carnegie Mellon University^{43}, University of California, Santa Cruz^{44}, Karlsruhe Institute of Technology^{45}, Heidelberg University^{46}, Florida State University^{47}, Carleton University^{48}, University of Mainz^{49}, University of Edinburgh^{50}, Brookhaven National Laboratory^{51}, Durham University^{52}, University of Lausanne^{53}, Massachusetts Institute of Technology^{54}, University of Southampton^{55}, Nagoya University^{56}, University of Oxford^{57}, Northwestern University^{58}, University of British Columbia^{59}, Columbia University^{60}, Lund University^{61}, University of Sheffield^{62}, University of California, Santa Barbara^{63}, Iowa State University^{64}, University of Alberta^{65}, University of Cambridge^{66}TL;DR: The Particle Data Group's biennial review as mentioned in this paper summarizes much of particle physics, using data from previous editions, plus 2658 new measurements from 644 papers, and lists, evaluates, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons.

Abstract: This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2658 new measurements from 644 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 112 reviews are many that are new or heavily revised including those on Heavy-Quark and Soft-Collinear Effective Theory, Neutrino Cross Section Measurements, Monte Carlo Event Generators, Lattice QCD, Heavy Quarkonium Spectroscopy, Top Quark, Dark Matter, V-cb & V-ub, Quantum Chromodynamics, High-Energy Collider Parameters, Astrophysical Constants, Cosmological Parameters, and Dark Matter. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.lbl.gov.

4,465 citations

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TL;DR: In this article, the color gauge theory of strong interactions without arbitrary adjustment of parameters is analyzed and several possibilities are identified, including one which would give a remarkable new kind of very light, long-lived pseudoscalar boson.

Abstract: The requirement that P and T be approximately conserved in the color gauge theory of strong interactions without arbitrary adjustment of parameters is analyzed. Several possibilities are identified, including one which would give a remarkable new kind of very light, long-lived pseudoscalar boson.

3,878 citations

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TL;DR: In this article, the low energy representation of several Green's functions and form factors and of the na scattering amplitude are calculated in terms of a few constants, which may be identified with the coupling constants of a unique effective low energy Lagrangian.

Abstract: * in terms of a few constants, which may be identified with the coupling constants of a unique effective low energy Lagrangian. The low energy representation of several Green’s functions and form factors and of the na scattering amplitude are then calculated. The values of the low energy coupling constants are extracted from available experimental data. The corrections of order Mj, to the xz scattering lengths and effective ranges turn out to be substantial and the improved low energy theorems agree very well with the measured phase shifts. The observed differences between the data and the uncorrected soft pion theorems may even be used to measure the scalar radius of the pion, which plays a central role in the low energy expansion. 0 1984 Academic Press, Inc.

3,277 citations

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TL;DR: In this article, a formalism for computing sums over random surfaces which arise in all problems containing gauge invariance (like QCD, three-dimensional Ising model etc.) is developed.

Abstract: We develop a formalism for computing sums over random surfaces which arise in all problems containing gauge invariance (like QCD, three-dimensional Ising model etc.). These sums are reduced to the exactly solvable quantum theory of the two-dimensional Liouville lagrangian. At D = 26 the string dynamics is that of harmonic oscillators as was predicted earlier by dual theorists, otherwise it is described by the nonlinear integrable theory.

2,908 citations