Global ETD Search
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Showing 1 to 4 of 4 for “"Quark models"”.
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Lowest Q² measurement of the [gamma] *p [right arrow] [Delta] reaction : probing the pionic contribution
… a magnetic dipole spin flip of one of the quarks (M1) or through electric and Coulomb quadrupole terms (E2 and C2) which indicate a deviation from spherical symmetry. The quark models using the color hyperfine interaction underestimate the size of the quadrupole terms by more than an order …
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Cold, dense quark matter
This thesis discusses the properties of cold quark matter as exists in the core of massive neutron stars, with baryon densities several times of nuclear saturation density, n_0 ≈ 0.16 fm^-3, at zero temperature. Specifically, we study effective quark models, the symmetry pattern of different quark …
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Study of the Two Pion Photoproduction On Deuterium
… the fundamental interaction of the constituent quarks and gluons is one of the primary challenges in strong inter- action physics. This interaction is governed by Quantum Chromodynamics (QCD), which is a theory for understanding the dynamics of strong. QCD displays the as- ymptotic freedom of …
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A Relativistic Model for Heavy Mesons
<p>Motivated by the present interest in the heavy quark effective theory, we construct a model for heavy mesons based on a relativistic bound state wave equation, the Gross equation. The kernel we use is based on scalar confining and vector Coulomb potentials. Wave functions are treated to leading …