Study of meson properties in quark models (Ph.D. Thesis, University of Pittsburgh, October 2006)

Abstract

The main motivation is to investigate meson properties in the quark model to understand the model applicability and generate possible improvements. Certain modifications to the model are suggested which have been inspired by fundamental QCD properties (such as running coupling or spin dependence of strong interactions). These modifications expand the limits of applicability of the constituent quark model and illustrate its weaknesses and strengths. The meson properties studied include meson spectra, decay constants, electromagnetic and electroweak form-factors and radiative transitions. The results are compared to the experimental data, lattice gauge theory calculations and other approaches. Modifications to the quark model suggested in this dissertation lead to a very good agreement with available experimental data and lattice results.

arXiv comment173 pages

References in corpus (32)

• A new look at scalar mesons
• Casimir scaling of SU(3) static potentials
• Dynamics and Decay of Heavy-Light Hadrons
• Radiative Transitions in Charmonium from Lattice QCD
• The B Meson Decay Constant from Unquenched Lattice QCD
• J/psi, psi' and Upsilon Production at Hadron Colliders: a review
• Testing the Nature of the D_{sJ}^*(2317)^+ and D_{sJ}(2463)^+ States Using Radiative Transitions
• Improved Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_{D^+}
• A Comprehensive Four-Quark Interpretation of D_s(2317), D_s(2457) and D_s(2632)
• Decay Constants of Heavy Vector Mesons in Relativistic Bethe-Salpeter Method
• BABAR resonance as a new window of hadron physics
• Two-Photon Decays of Mesons in a Relativistic Quark Model
• Pseudovector components of the pion, pi^0 -> gamma gamma, and F_pi(q^2)
• Relativistic treatment of the decay constants of light and heavy mesons
• Mass of D*_sJ(2317) and Coupled Channel Effect
• Confinement and gluon propagator in Coulomb gauge QCD
• D_{sJ}(2860) as the first radial excitation of the D_{s0}^*(2317)
• c,b quark masses and f_D_(s), f_B_(s) decay constants from pseudoscalar sum rules in full QCD to order alpha_s^2
• Two Photon Decays of Charmonia from Lattice QCD
• A Canonical Ds(2317)?
• Casimir Scaling vs. Abelian Dominance in QCD String Formation
• Transition Form Factors between Pseudoscalar and Vector Mesons in Light-Front Dynamics
• B meson decay constant from two-flavor lattice QCD with non-relativistic heavy quarks
• Decay constants of B and D mesons from improved relativistic lattice QCD with two flavours of sea quarks
• Pseudoscalar Decay Constants $f_D$ and $f_{D_s}$ in Lattice QCD with Exact Chiral Symmetry
• Tests of Two-Body Dirac Equation Wave Functions in the Decays of Quarkonium and Positronium into Two Photons
• ${\alpha }_s$ 2002
• Nonleptonic Weak Decays of B to D_s and D mesons
• Two-photon width of eta_b, eta'_b and eta''_b from Heavy-Quark Spin Symmetry
• Quark and gluon confinement in Coulomb gauge
• A quark model suggestion against Ds*(2317) and Ds*(2460) as chiral partners of standard Ds
• RPA equations and the instantaneous Bethe-Salpeter equation