Pentaquark ${\Theta }^{+}$ in nuclear matter and ${\Theta }^{+}$ hypernuclei

Abstract

We study the properties of the ${\Theta }^{+}$ in nuclear matter and ${\Theta }^{+}$ hypernuclei within the quark mean-field (QMF) model, which has been successfully used for the description of ordinary nuclei and $\Lambda$ hypernuclei. With the assumption that the non-strange mesons couple only to the $u$ and $d$ quarks inside baryons, a sizable attractive potential of the ${\Theta }^{+}$ in nuclear matter is achieved as a consequence of the cancellation between the attractive scalar potential and the repulsive vector potential. We investigate the ${\Theta }^{+}$ single-particle energies in light, medium, and heavy nuclei. More bound states are obtained in ${\Theta }^{+}$ hypernuclei in comparison with those in $\Lambda$ hypernuclei.

16 pages, 5 figures

References in corpus (11)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• The quark-meson coupling model for Lambda, Sigma and Xi hypernuclei
• Density dependent hadron field theory for hypernuclei
• Self-consistent description of $\Lambda$ hypernuclei in the quark-meson coupling model
• Quark mean field model for nuclear matter and finite nuclei
• Study of $\Lambda$ hypernuclei in the quark mean field model
• A QCD Sum Rule Study of ${\Theta }^{+}$ in Nuclear Matter
• Even Parity $\Theta$-Pentaquark and Stable Strange Nuclear Matter
• ${\Theta }^{+}$ Hypernuclei
• ${\Theta }^{+}$ hypernuclei in relativistic mean field model

Cited by in corpus (10)

• Generalized mass formula for non-strange and hyper nuclei with SU(6) symmetry breaking
• The effect of the in-medium ${\Theta }^{+}$ pentaquark on the kaon optical potential
• Strange Exotic States and Compact Stars
• Modification of nucleon properties in nuclear matter and finite nuclei
• Phenomenological Analysis of Triply Heavy Pentaquarks with configurations $q\Bar{q}QQQ$ and $qqQQ\Bar{Q}$
• In-medium Properties of ${\Theta }^{+}$ as a K$\pi$N structure in Relativistic Mean Field Theory
• Medium modifications of baryon properties in nuclear matter and hypernuclei
• Effective mass and decay of ${\Theta }^{+}$ in nuclear matter in quark-meson coupling model
• Pentaquarks in the medium in the quark-meson coupling model
• Bound states of ${\Theta }^{+}$ in nuclei