Magnetic moment of the rho-meson in QCD sum rules: perturbative corrections

Abstract

The magnetic moment of the rho-meson is calculated in the framework of QCD sum rules in external fields. Perturbative corrections are taken into account. Bare loop calculations (parton model) give the value 2.0. The nonperturbative effects (operators of dimension 6) result in negative contribution, whereas perturbative corrections -- positive one. The final answer is 1.8.

10 pages, 5 figures

References in corpus (6)

• Photon Distribution Amplitudes in QCD
• Covariant and ligth-front approaches to the rho-meson eletromagnetic form factors
• Electromagnetic form factors of light vector mesons
• Condensates in Quantum Chromodynamics
• Dipole Moments of the Rho Meson
• Magnetic moment of the (rho) meson in light cone QCD

Cited by in corpus (22)

• Superconductivity of QCD vacuum in strong magnetic field
• Vector meson form factors and their quark-mass dependence
• Charged vector mesons in a strong magnetic field
• Electromagnetic Structure of the $\rho$ Meson in the Light-Front Quark Model
• Pseudoscalar and vector meson form factors from lattice QCD
• On the radiative decays of light vector and axial-vector mesons
• Magnetic properties of ground-state mesons
• Rho-meson form factors and QCD sum rules
• Rho meson form factors in a confining Nambu--Jona-Lasinio model
• Magnetic and quadrupole moments of light spin-1 mesons in light cone QCD sum rules
• Electromagnetic superconductivity of vacuum induced by strong magnetic field
• Electromagnetic rho-meson form factors in point-form relativistic quantum mechanics
• Radiative two-pion decay of the tau lepton
• Magnetic moment of the rho meson in instant-form relativistic quantum mechanics
• Electromagnetic form factors of the (rho) meson in light cone QCD sum rules
• Electric dipole moment of the rho-meson
• On the possibility of rho-meson condensation in neutron stars
• Tensor polarizability of the vector mesons from $SU(3)$ lattice gauge theory
• Light-by-Light Scattering in the Presence of Magnetic Fields
• Magnetic dipole moment of the light tensor mesons in light cone QCD sum rules
• Multipole Moments of Heavy Vector and Axial-Vector Mesons in QCD
• Quadrupole moments of spin-1 systems: the rho meson, the S-wave deuteron and some general constraints