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Showing 1 to 12 of 12 for “"Generalized parton distributions"”.

  1. Exclusive Production of Quarkonia and Generalized Parton Distributions

    Koempel, John PaulTemple University. Libraries2015

    … not well understood. Utilizing the framework of Generalized Parton Distributions enables predictions to be made if some information on them is known. We investigated exclusive photo and electroproduction of heavy vector mesons (the quarkonia J/ψ and ϒ), which can give access to the currently …

    temple Repository record

  2. Exploring proton structure using lattice QCD

    Renner, Dru Bryant, 1977-Massachusetts Institute of Technology2004

    We calculate moments of the generalized parton distributions of the nucleon using lattice QCD. The generalized parton distributions determine the angular momentum decomposition of the nucleon and the transverse distributions of partons within the nucleon. Additionally, the generalized parton …

    mit Repository record

  3. Inclusive and Exclusive Compton Processes in Quantum Chromodynamics

    Psaker, A.2019

    … analyze the process in the framework of the QCD parton model, in which the usual parton distributions emerge as a tool to describe the nucleon in terms of quark and gluonic degrees of freedom. To study its exclusive version, a new class of phenomenological functions is required, namely, …

    odu Repository record

  4. Measurement of the Deeply Virtual Neutral Pion Electroproduction Cross Section off the Proton at 10.6 GeV using the CLAS12 Detector

    Johnston, RobertMassachusetts Institute of Technology2023

    … production has unique access to the chiral odd Generalized Parton Distributions, and is also a background for other exclusive processes such as Deeply Virtual Compton Scattering, making the determination of this cross section crucial for other exclusive analyses.

    mit Repository record

  5. Triple Coincidence Beam Spin Asymmetry Measurements in Deeply Virtual Compton Scattering

    Canan, Mustafa2019

    <p>The Generalized Parton Distributions (GPDs) provides hitherto the most complete information about the quark structure of hadron. GPDs are accessible through hard-exclusive reactions, among which Deeply Virtual Compton Scattering (DVCS) is the cleanest reaction. A dedicated DVCS experiment on …

    odu Repository record

  6. Electroproduction of Phi(1020) Mesons at High Q² with CLAS

    Santoro, Joseph PeterVirginia Tech2004

    … and gluon exchange-dominated model described by Generalized Parton Distributions of 1/Q⁶. The differential cross section dσ/dφ was used to determine that the s-channel helicity conservation (SCHC) assumption is valid within the precision of the current data. SCHC leads to a simple expression for …

    vt Repository record

  7. Deeply Virtual Compton Scattering at Hall A, Jefferson Lab

    Hashir Rashad, Mohamed Nuhman2021

    … system and hence help fill in the gaps of QCD. Generalized Parton Distributions (GPDs) provide simultaneous information of both spacial and longitudinal momentum distributions of constituents of a quark-gluon system. Deeply Virtual Compton Scattering (DVCS) is understood to be the simplest and …

    odu Repository record

  8. Measurement of the Deeply Virtual Compton Scattering Cross Section from the Proton at 10.6 GeV using the CLAS12 Detector

    Lee, SangbaekMassachusetts Institute of Technology2022

    … the DVCS cross section enables the study of the Generalized Parton Distributions (GPD), which plays a central role in understanding the QCD dynamics inside a hadron. Thus, the quark and gluon origin of the nucleon spin and mass can be probed and three-dimensional images of the target nucleon or …

    mit Repository record

  9. Photoproduction of π0 on Hydrogen With CLAS From 1.1 GeV - 5.45 GeV Using e+e –γ Decay

    Kunkel, Michael C.2019

    … and <em>dσ</em>/<em>dt</em>. The angular distributions agree well with the SAID parametrization for incident beam energies below 3 GeV. As a result with this new data, the χ<sup>2</sup>/<em>p.d.f.</em> of the global fit in the SAID parametrization improved to 3.1 from 3.7. For incident …

    odu Repository record

  10. Measurements of Compton Scattering on the Proton at 2--6 GeV

    Danagoulian, AregUniversity of Illinois at Urbana-Champaign2015

    … reaction observables in the framework of Generalized Parton Distributions (GPD), which have the function of bridging the wide gap between the exclusive (form factors) and inclusive (parton distribution functions) description of the proton. The experiment was conducted in Hall A of Thomas …

    uiuc Repository record

  11. Measurements of Compton scattering on the proton at 2-6 GeV

    Danagoulian, Areg2012

    … reaction observables in the framework of Generalized Parton Distributions (GPD), which have the function of bridging the wide gap between the exclusive(form factors) and inclusive(parton distribution functions) description of the proton. The experiment was conducted in Hall A of Thomas …

    uiuc Repository record

  12. Exclusive pi0 production at HERMES: detection - simulation - analysis

    Vandenbroucke, A2007

    … angular momenta and gluon spin. The framework of Generalized Parton Distributions (GPDs) provides access to the hitherto unknown quark orbital angular momentum. These GPDs can be probed via the measurement of so-called exclusive reactions. In these reactions the initial and final state are fully …

    ghent Repository record