Self-consistent covariant description of vector meson decay constants and chirality-even quark-antiquark distribution amplitudes up to twist 3 in the light-front quark model

2013/08/31 by Ho-Meoyng Choi, Chueng‐Ryong Ji, Chueng-Ryong Ji · 48 citations
Physics and Astronomy · #Amplitude #Bethe–Salpeter equation #Chiral symmetry breaking #Covariant transformation #Geometry #High-Energy Particle Collisions Research #Lattice QCD #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #QCD vacuum #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Quark model #Quarkonium #Twist #Vector meson #hep-ph

paper · pdf · doi:10.1103/physrevd.89.033011

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 89(3) (American Physical Society) · 16 pages, 4 figures

openalex publication_date 2014/02/19 · arxiv created 2014/02/20 · arxiv updated 2015/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Although the meson decay amplitude described by a two-point function may be regarded as one of the simplest possible physical observables, it is interesting that this apparently simple amplitude bears abundant fundamental information on QCD vacuum dynamics and chiral symmetry. The light-front zero-mode issue of the vector meson decay constant f_V is in this respect highly nontrivial and deserves careful analysis. We discuss the zero-mode issue in the light-front quark model (LFQM) prediction of f_V from the perspective of the vacuum fluctuation consistent with the chiral symmetry of QCD. We extend the exactly solvable, manifestly covariant Bethe-Salpeter model calculation to the more phenomenologically accessible, realistic light-front quark model and present a self-consistent covariant description of f_V, analyzing the twist-2 and twist-3 quark-antiquark distribution amplitudes with even chirality.

Citations

• Review of Particle Physics
• Consistent treatment of spin-1 mesons in the light-front quark model
• Extracting the Distribution Amplitudes of the ρ meson from the Color Glass Condensate
• Covariant light-front approach fors-wave andp-wave mesons: Its application to decay constants and form factors
• Quantum chromodynamics and other field theories on the light cone
• Analyses of decay constants and light-cone distribution amplitudes fors-wave heavy meson

Cited by

• Radiative Transitions for the Ground and Excited Charmonia States
• Chiral anomaly and the pion properties in the light-front quark model