Starting with the dynamical picture of the exotic cc--containing states XYZ as the confinement-induced hadronization of a rapidly separating pair of a compact diquark and antidiquark, we describe the pentaquark candidates Pc+(4380) and Pc+(4450) in terms of a confined but rapidly separating color-antitriplet diquark cu and color-triplet "triquark" c-(ud). This separation explains the relatively small Pc+ widths, despite these 5-quark systems lying far above both the J/ψ p and ΛcD-(*)0 thresholds. The Pc+ states are predicted to form isospin doublets with neutral partners Pc0.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Oct 7 2015|
- Exotic baryons
ASJC Scopus subject areas
- Nuclear and High Energy Physics