Light-Front Spin-1 Model: Parameters Dependence

@article{Mello2015LightFrontSM,
  title={Light-Front Spin-1 Model: Parameters Dependence},
  author={Clayton S. Mello and Anac{\'e} N. da Silva and J.P.B.C. de Melo and Tobias Frederico},
  journal={Few-Body Systems},
  year={2015},
  volume={56},
  pages={509-514}
}
We study the structure of the ρ-meson within a light-front model with constituent quark degrees of freedom. We calculate electroweak static observables: magnetic and quadrupole moments, decay constant and charge radius. The prescription used to compute the electroweak quantities is free of zero modes, which makes the calculation implicitly covariant. We compare the results of our model with other ones found in the literature. Our model parameters give a decay constant close to the experimental… 
Poincaré-invariant constituent quark model for light mesons: capabilities and constraints
We present a brief survey of some results on electroweak properties of com- posite systems that are obtained in the frameworks of our version of the instant form of relativistic quantum mechanics
The pion electromagnetic structure with self-energy
We study the electromagnetic structure of the pion in terms of the quantum cromodynamic (QCD) model on the Breit-frame. We calculated the observables, such as the electromagnetic form factor. The
Electroweak properties of ρ-meson in the instant form of relativistic quantum mechanics
Charge and magnetic radii, magnetic and quadrupole moments of the ρ -meson are calculated in framework of the developed by authors version of the instant form of relativistic quantum mechanics with
Magnetic moment of the ρ meson in instant-form relativistic quantum mechanics
We derive an explicit analytical expression for the magnetic dipole moment of the rho meson, mu_rho, in a relativistic constituent-quark model. We adopt our relativistic approach to composite
Radius of the ρ meson determined from its decay constant
We present a unified model describing electroweak properties of the pi and rho mesons. Using a general method of relativistic parametrization of matrix elements of local operators, adjusted for the
ρ-Meson properties in medium
Quadrupole moments of spin-1 systems: the rho meson, the S-wave deuteron and some general constraints.
We costruct the relativistic operator of the quadrupole moment of two-particle composite spin one systems with zero orbital moment of the relative motion and derive explicit analytical expression for
Static electromagnetic moments and lepton decay constant of the $\rho$-meson in the instant form of relativistic quantum mechanics
The relativistic calculations of the electromagnetic form factors, static moments and lepton decay constant of the $\rho$-meson are given in the framework of the instant form of the relativistic
Quadrupole moments of the ρ meson and the S -wave deuteron and some general constraints on quadrupole moments of spin-1 systems
We costruct the relativistic operator of the quadrupole moment of two-particle composite spin one systems with zero orbital moment of the relative motion and derive explicit analytical expression for
...
1
2
...

References

SHOWING 1-10 OF 45 REFERENCES
Electromagnetic structure of theρmesonin the light-front quark model
We investigate the elastic form factors of the {rho} meson in the light-front quark model (LFQM). With the phenomenologically accessible meson vertices including the one obtained by the Melosh
Covariant and light front approaches to the rho meson electromagnetic form-factors
The {rho}-meson electromagnetic form factors are calculated, both in covariant and light-front frameworks with constituent quarks. The effect of the breakdown of rotational symmetry for the one-body
Frame dependence of the pair contribution to the pion electromagnetic form factor in a light-front approach
The frame dependence of the pair-term contribution to the electromagnetic form factor of the pion is studied within the Light Front approach. A symmetric ansatz for the pion Bethe-Salpeter amplitude
Spin-1 particle in the light-front approach
The electromagnetic current of spin-1 composite particles does not transform properly under rotations if only the valence contribution is considered in the light-front model. In particular, the plus
Pion Eletromagnetic Current in the Ligth-Cone Formalism
The electromagnetic form factor of the pion is calculated in a pseudoscalar field theoretical model which constituent quarks. We extract the form factor using the "+" component of the electromagnetic
Spacelike and timelike pion electromagnetic form factor and Fock state components within the light-front dynamics
The simultaneous investigation of the pion electromagnetic form factor in the space- and timelike regions within a light-front model allows one to address the issue of nonvalence components of the
Vector meson form factors and their quark-mass dependence
The electromagnetic form factors of vector mesons are calculated in an explicitly Poincare covariant formulation, based on the Dyson-Schwinger equations of QCD, that respects electromagnetic current
Hamiltonian light-front dynamics of elastic electron-deuteron scattering.
TLDR
The size of relativistic effects, scaling behavior, sensitivity to the nucleon-nucleon interactions, and effects of the uncertainties in measured nucleon form factors are investigated.
...
1
2
3
4
5
...