2005/12/31 by Pedro Bicudo, P. Bicudo · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.74.036008
published as Phys.Rev.D74:036008,2006 · 8 pages, 2 tables, 4 figures, longer version
arxiv created 2006/05/30 · openalex publication_date 2006/08/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
This paper presents the first study of mesons with a quark and an antiquark with different and finite masses in a simple confining and chiral invariant quark-antiquark interaction, leading to spontaneous chiral symmetry breaking and to constituent quarks. In the false chiral invariant vacuum, the chiral partners are degenerate, and tachyons occur in the light-light spectrum. In the true vacuum, most of the standard nonrelativistic quark-model spectra should be recovered except for the pion and other particular constraints. The calibration problem of chiral quark models is also addressed here. The detailed inspection of the different contributions to the D and Ds masses suggests that the challenging recently observed Ds*(2317) and Ds*(2460) mesons might not fit as global chirally rotated quark-antiquark Ds mesons.