Properties of vector mesons in four pseudoscalars electroproduction

Abstract

Vector mesons and the $W$ gauge boson share some common features, such as the spin and a very short lifetime. The electromagnetic properties of the $W$ are linked to its gauge nature and thus a big effort has been devoted to measure them, while accounting for its instability. In this work, we elaborate on how these ideas can be translated to study vector mesons. We focus in the unstable property of such states and the restrictions from electromagnetic gauge invariance, describing the differences and similarities. Then, we describe the four pseudoscalars electroproduction as an analog to the $e^{+}{e}^{-}\to 4fermions$ process, used to study the electromagnetic properties of the $W$ boson. We point out that the current experimental capabilities are reaching the possibility to measure the magnetic dipole moment of light vector mesons.

arXiv commentTo be published in Journal of Physics Conference Series (IOP). Joint Proceedings of the XV Mexican Workshop on Particles and Fields & the XXX Annual Meeting of the Division of Particles and Fields of the Mexican Physical Society

References in corpus (19)

• pi- and rho-mesons, and their diquark partners, from a contact interaction
• Vector meson form factors and their quark-mass dependence
• Stable Calculations for Unstable Particles: Restoring Gauge Invariance
• Covariant and ligth-front approaches to the rho-meson eletromagnetic form factors
• Electromagnetic form factors of the $\rho$ meson in a light-front constituent quark model
• a_1(1260) dominance in the process e+e- \to 4πat energies 1.05--1.38 GeV
• Finite Width Effects and Gauge Invariance in Radiative $W$ Production and Decay
• Cross Sections for the Reactions e+e- --> K+ K- pi+pi-, K+ K- pi0pi0, and K+ K- K+ K- Measured Using Initial-State Radiation Events
• Electromagnetic form factors of light vector mesons
• Electromagnetic Structure of the $\rho$ Meson in the Light-Front Quark Model
• Pseudoscalar and vector meson form factors from lattice QCD
• Four-pion production in e+ e- annihilation
• Rho meson form factors in a confining Nambu--Jona-Lasinio model
• Behaviour of the Absorptive Part of the W Electromagnetic Vertex
• Electromagnetic properties of neutral and charged spin 1 particles
• Measurements of CP-conserving Trilinear Gauge Boson Couplings WWV (V = gamma,Z) in e+e- Collisions at LEP2
• Gauge invariance and finite width effects in radiative two-pion tau lepton decay
• Finite width induced modification to the electromagnetic form factors of spin-1 particles
• Determination of the magnetic dipole moment of the rho meson using 4 pion electroproduction data