Pseudoscalar current and covariance with the light-front approach

Abstract

Quantum Field Theory (QFT) is used to describe the physics of particles in terms of their fundamental constituents. The Light-Front Field Theory~(LFFT), introduced by Paul Dirac in 1949, is an alternative approach to solve some of the problems that arise in quantum field theory. The LFFT is similar to the Equal Time Quantum Field Theory~(EQT), however, some particularities are not, such as the loss of covariance in the light-front. Pion electromagnetic form factor is studied in this work at lower and higher momentum transfer regions to explore the constituent quark models and the differences among these and other models. The electromagnetic current is calculated with both the ``plus'' and ``minus'' components in the light-front approach. The results are compared with other models, as well as with experimental data.

arXiv commentTo appear Revista Mexicana de Fisica (2023). 10 eps figures. arXiv admin note: substantial text overlap with arXiv:1610.05669

References in corpus (68)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Covariant Light-Front Approach for s-wave and p-wave Mesons: Its Application to Decay Constants and Form Factors
• Collective perspective on advances in Dyson-Schwinger Equation QCD
• Measurement of the Charged Pion Electromagnetic Form Factor
• Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2
• The $\pi$, $K^{+}$, and $K^0$ electromagnetic form factors
• Determination of the pion charge form factor for Q^2=0.60-1.60 GeV^2
• Pion electromagnetic form factor at spacelike momenta
• Computation of the O(p^6) order low-energy constants: an update
• The pion: an enigma within the Standard Model
• pi- and rho-mesons, and their diquark partners, from a contact interaction
• Electromagnetic Pion Form Factor and Neutral Pion Decay Width
• Nucleon and pion electromagnetic form factors in a light-front constituent quark model
• An interacting quark-diquark model of baryons
• Pion form factor from a contact interaction
• Covariant and ligth-front approaches to the rho-meson eletromagnetic form factors
• Structure of the neutral pion and its electromagnetic transition form factor
• Pseudovector components of the pion, pi^0 -> gamma gamma, and F_pi(q^2)
• Electromagnetic Transition Form Factors of Light Mesons
• Relativistic treatment of the decay constants of light and heavy mesons
• Pion and sigma meson properties in a relativistic quark model
• Electromagnetic form factors of light vector mesons
• Electromagnetic Structure of the $\rho$ Meson in the Light-Front Quark Model
• Basis light front quantization for the charged light mesons with color singlet Nambu--Jona-Lasinio interactions
• The Vector Meson Form Factor Analysis in Light-Front Dynamics
• Regularizing the Divergent Structure of the Light-Front Currents
• Flavour dependence of the pion and kaon form factors and parton distribution functions
• Pair term in the Electromagnetic Current within the Front-Form Dynamics: Spin-0 Case
• Consistent treatment of spin-1 mesons in the light-front formalism
• Pairs in the light-front and covariance
• Charge form factor of $\pi$ and $K$ mesons
• Nucleon electromagnetic form factors and polarization observables in space-like and time-like regions
• Space-like and time-like pion electromagnetic form factor and Fock state components within the Light-Front dynamics
• Charge-Symmetry Breaking, Rho-Omega Mixing and the Quark Propagator
• Single pseudoscalar meson pole and pion box contributions to the anomalous magnetic moment of the muon
• A Model for the Twist-3 Wave Function of the Pion and Its Contribution to the Pion Form Factor
• Electromagnetic form factor of the pion in the space- and time-like regions within the front-form dynamics
• Transition Form Factors between Pseudoscalar and Vector Mesons in Light-Front Dynamics
• Contribution of neutral pseudoscalar mesons to $a_{\mu }^{HLbL}$ within a Schwinger-Dyson equations approach to QCD
• Poincare' Covariant Current Operator and Elastic Electron-Deuteron Scattering in the Front-form Hamiltonian Dynamics
• A New Application of the Gursey and Radicati Mass Formula
• Pion and kaon elastic form factors in a refined light-front model
• Electromagnetic form factors in the light-front formalism and the Feynman triangle diagram: spin-0 and spin-1 two-fermion systems
• Masses and electroweak properties of light mesons in the relativistic quark model
• Elucidating the effect of intermediate resonances in the quark interaction kernel on the time-like electromagnetic pion form factor
• Covariance of Light-Front Models: Pair Current
• Rho-meson form factors and QCD sum rules
• Deuteron Magnetic and Quadrupole Moments with a Poincaré Covariant Current Operator in the Front-Form Dynamics
• Pion electromagnetic form factor in the Covariant Spectator Theory
• Pion form factor and QCD sum rules: case of axial current
• On a possible estimation of the constituent--quark parameters from Jefferson Lab experiments on pion form factor
• Light-Front projection of spin-1 electromagnetic current and zero-modes
• Nonperturbative relativistic approach to pion form factor: predictions for future JLab experiments
• Form Factors and Generalized Parton Distributions in Basis Light-Front Quantization
• Electromagnetic form factors of the (rho) meson in light cone QCD sum rules
• Pion Form Factor and Quark Mass Evolution in a Light-Front Bethe-Salpeter Model
• Non local lagrangians(I): the pion
• Impact parameter dependent quark distribution of the pion
• Regularization of fermion self-energy and electromagnetic vertex in Yukawa model within light-front dynamics
• Pseudoscalar mesons with symmetric bound state vertex functions on the light front
• Weak decay constant of pseudscalar meson in a QCD-inspired model
• Pion form factor in the Kroll-Lee-Zumino model
• Light-Front Spin-1 Model: Parameters Dependence
• Asymptotic behavior of nucleon electromagnetic form factors in time-like region
• RQM description of the charge form factor of the pion and its asymptotic behavior
• Electromagnetic structure and weak decay of pseudoscalar mesons in a light-front QCD-inspired model
• The pion electromagnetic form-factor in a QCD-inspired model
• Meson loop effects on the pion electromagnetic form factor

Cited by in corpus (3)

• Kaon Structure in the Nuclear Medium within the Light Front Approach
• Ward-Takahashi identity in the light-front formalism for a bound state of fermions
• Covariant form factors for spin-1 particles