2006/08/30 by J. Vijande, A. Valcarce, K. Tsushima
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.74.054018
published as Phys.Rev.D74:054018,2006 · 10 pages, 5 tables. Accepted for publication in Phys. Rev. D
arxiv created 2006/08/30 · openalex publication_date 2006/09/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
It has been recently conjectured by Selem and Wilczek [1] the existence of a ss--[ud] meson due to strong correlations between the two light antiquarks. We make a detailed study of this system within a dynamical quark model which has proven to be successful in reproducing the most important features of low-energy hadron phenomenology. Our results, obtained within a parameter-free calculation, show that the antidiquark component of the ssud system indeed entails the stronger attraction, and drives its energy much lower than the N\ensuremathΞ threshold, but still above the K0K^*\ensuremath- or K*0K^\ensuremath- thresholds. We have also studied the ccud and bbud systems. Exotic mesons are only expected to exist in the limit of large mass for the two-quark subsystem, bbud, since the calculated mass is below the B0B^*\ensuremath- or B*0B^\ensuremath- thresholds.