Dynamical study of QQu̅ d̅ mesons
Files
(Published version)
Date
2006
Authors
Vijande, J.
Valcarce, A.
Tsushima, K.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2006; 74(5):054018-1-054018-5
Statement of Responsibility
J. Vijande, A. Valcarce, and K. Tsushima
Conference Name
Abstract
It has been recently conjectured by Selem and Wilczek [1] the existence of a ss–[u̅ d̅ ] 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 ssu̅ d̅ system indeed entails the stronger attraction, and drives its energy much lower than the N̅ Ξ threshold, but still above the K̅ 0K*- or K̅ *0K- thresholds. We have also studied the ccu̅ d̅ and bbu̅ d̅ systems. Exotic mesons are only expected to exist in the limit of large mass for the two-quark subsystem, bbu̅ d̅ , since the calculated mass is below the B̅ 0B*- or B̅ *0B- thresholds.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
©2006 American Physical Society