Comparison among Hamiltonian light-front formalisms at q+ = 0 and q+ <> 0: space-like elastic form factors of pseudoscalar and vector mesons

Abstract

The electromagnetic elastic form factors of pseudoscalar and vector mesons are analyzed for space-like momentum transfers in terms of relativistic quark models based on the Hamiltonian light-front formalism elaborated in different reference frames (q+ 0 and q+ <> 0). As far as the one-body approximation for the electromagnetic current operator is concerned, it is shown that the predictions of the light-front approach at q+=0 should be preferred, particularly in case of light hadrons, because of: i) the relevant role played by the Z-graph at q+ <> 0, and ii) the appropriate elimination of spurious effects, related to the orientation of the null hyperplane where the light-front wave function is defined.

arXiv commentversion to appear in Phys. Rev. C. No change in the results and in the conclusions

References in corpus (13)

• Explicitly Covariant Light-Front Dynamics and Relativistic Few-Body Systems
• Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model
• Electromagnetic form factors of the $\rho$ meson in a light-front constituent quark model
• Rare exclusive semileptonic b -> s transitions in the Standard Model
• The three loop slope of the Dirac form factor and the 1S Lamb shift in hydrogen
• Hard Constituent Quarks and Electroweak Properties of Pseudoscalar Mesons
• Charge form factor of $\pi$ and $K$ mesons
• Weak Decay Form Factors of Heavy Pseudoscalar Mesons within a Light-Front Constituent Quark Model
• Rare decays B -> (K, K*) (l+ l-, nu bar{nu}) in the quark model
• Electromagnetic form factors in the light-front formalism and the Feynman triangle diagram: spin-0 and spin-1 two-fermion systems
• Electromagnetic and weak current operators for interacting systems within the front-form dynamics
• Calculation of the Isgur-Wise function from a light-front constituent quark model
• Heavy-to-heavy and heavy-to-light weak decay form factors in the light-front approach: the exclusive $0^{-}$ to $0^{-}$ case

Cited by in corpus (25)

• Electromagnetic Structure of the $\rho$ Meson in the Light-Front Quark Model
• Possible evidence of extended objects inside the proton
• Relativistic Instant--Form Approach To The Structure Of Two-Body Composite Systems. Nonzero Spin
• Relativistic Instant--Form Approach to the Structure of Two-Body Composite Systems. II. Nonzero Spin
• Electromagnetic rho-meson form factors in point-form relativistic quantum mechanics
• Electromagnetic meson form factor from a relativistic coupled-channel approach
• Frame dependence of form factors in light-front dynamics
• Electroweak form factors of heavy-light mesons -- a relativistic point-form approach
• The form factor of the pion in "point-form" of relativistic dynamics revisited
• Possible evidence of extended objects inside the proton
• Form factors in the "point form" of relativistic quantum mechanics: single and two-particle currents
• Structures of Rotating Traditional Neutron Stars and Hyperon Stars in the Relativistic $\sigma -\omega$ Model
• Relativistic quantum mechanics: A Dirac's point-form inspired approach
• Frame dependence of transition form factors in light-front dynamics
• RQM description of the charge form factor of the pion and its asymptotic behavior
• An Approach towards a Constituent Quark Model on the Light Cone
• Vacuum Expectation Value of a Wegner-Wilson Loop near the Light Cone
• Longitudinal structure function of the proton at low momentum transfer and extended constituents
• End-point singularities of Feynman graphs on the light cone
• Semileptonic meson decays in point-form relativistic quantum mechanics: unambiguous extraction of weak form factors
• Weak transition form factors of heavy-light pseudoscalar mesons for space- and timelike momentum transfers
• RQM description of PS meson form factors, constraints from space-time translations, and underlying dynamics
• Nucleon and Pion Form Factors in Different Forms of Relativistic Quantum Mechanics
• Hadron structure within the point form of relativistic quantum mechanics
• Covariant analysis of electromagnetic current on the light cone: exposition with scalar Yukawa theory