2004/02/11 by Ho-Meoyng Choi, Chueng‐Ryong Ji, Chueng-Ryong Ji · 84 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Helicity #Mathematical physics #Matrix (chemical analysis) #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Quark model #Zero (linguistics) #Zero mode #hep-ph
paper · pdf · doi:10.1103/physrevd.70.053015
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 70(5) (American Physical Society) · 14pages, 5figures
arxiv created 2004/02/11 · openalex publication_date 2004/09/27 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/08/05
We investigate the elastic form factors of the \ensuremathρ mesonin the light-front quark model (LFQM). With the phenomenologically accessiblemeson vertices including the one obtained by the Melosh transformation frequentlyused in the LFQM, we find that only the helicity 0\ensuremath→0 matrix element of the plus current receives the zero-modecontribution. We quantify the zero-mode contribution in the helicity 0\ensuremath→0 amplitude using the angular condition of spin-1 system.After taking care of the zero-mode issue, we obtain the magnetic (\ensuremathμ)and quadrupole (Q) momentsof the \ensuremathρ mesonas \ensuremathμ=1.92 and Q=0.43, respectively, in the LFQM consistent with the Meloshtransformation and compare our results with other available theoretical predictions.