Dynamical study of the pentaquark antidecuplet

Abstract

Dynamical calculations are performed for all isomultiplets of the flavour antidecuplet to which the newly discovered pentaquark ${\Theta }^{+}$ belongs. The framework is a constituent quark model where the short-range interaction has a flavour-spin structure. In this model the lowest pentaquarks have positive parity. Each antidecuplet member is described by a variational solution with the Pauli principle properly taken into account. By fitting the mass of ${\Theta }^{+}$ of minimal content $uudd\bar{s}$, the mass of ${\Xi }^{--}$, of minimal content $ddss\bar{u}$, is predicted at approximately 1960 MeV. The influence of the octet-antidecuplet mixing on the masses of the $Y=1$ and 0 pentaquarks is considered within the same model and the role of the kinetic energy plus the hyperfine interaction in this mixing is pointed out.

11 pages, espcrc1.sty, additional results on the octet-antidecuplet mixing and some numerical corrections to the published version in PLB595(2004)269-276. Conclusions unchanged

References in corpus (17)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Diquarks and Exotic Spectroscopy
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• The Spectrum of the Nucleons and the Strange Hyperons and Chiral Dynamics
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei
• Evidence for the positive-strangeness pentaquark ${\Theta }^{+}$ in photoproduction with the SAPHIR detector at ELSA
• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• Observation of an Exotic Baryon with S=+1 in Photoproduction from the Proton
• Stable $uudd\bar{s}$ pentaquarks in the constituent quark model
• Low lying $qqqq\bar{q}$ states in the baryon spectrum
• Light Baryons in a Constituent Quark Model with Chiral Dynamics
• Positive parity pentaquarks in a Goldstone boson exchange model
• Heavy-Flavour Pentaquarks in a Chiral Constituent Quark Model
• Positive Parity Pentaquarks Pragmatically Predicted
• Search for the pentaquark via the P^0_{{c bar}s} --> phi,pi,p decay
• The Coupling of eta Mesons to Quarks and Baryons from D_s^* -> D_s pi^0 Decay

Cited by in corpus (17)

• The $s\bar{s}$ component of the proton and the strangeness magnetic moment
• Charmed Exotics in Heavy Ion Collisions
• Estimate of the Theta+ width in the Relativistic Mean Field Approximation
• Pentaquarks: Review on Models and Solitonic Calculations of Antidecuplet Magnetic Moments
• Spectroscopy of ${\mathrm{q}}^3{\bar{\mathrm{q}}}^3$-States in Quark Model and Baryon-Antibaryon Enhancements
• Pentaquark as a NK^* bound state with TJ^P=0{3/2}^-
• Phenomenology of spin 3/2 baryons with pentaquarks
• Anti-charmed pentaquark from B decays
• The discovery and properties of pentaquarks
• Baryons as Fock states of 3,5,... quarks
• Pentaquarks $uudd\bar{q}$ with One Color Sextet Diquark
• Faddeev calculation of pentaquark ${\Theta }^{+}$ in the Nambu-Jona-Lasinio model-based diquark picture
• Structure and reactions of pentaquark baryons
• Pentaquarks in string dynamics
• P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction
• Pentaquarks in the medium in the quark-meson coupling model
• Constituent quark models and pentaquark baryons