Quark model estimate of hidden-charm pentaquark resonances

Emiko Hiyama, Atsushi Hosaka, Makoto Oka, Jean Marc Richard

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the qqqcc configurations, where q is a light quark and c the charmed quark. In the calculation, several open channels are explicitly included such as J/ψ+N, ηc+N, Λc+D, etc. To distinguish genuine resonances and estimate their width, we employ the Gaussian expansion method supplemented by the real scaling method (stabilization). No resonance is found at the energies of the Pc(4380) and Pc(4450) pentaquarks. On the other hand, there is a sharp resonant state at 4690 MeV with a J=1/2- state and another one at 4920 MeV with a J=3/2- state which have a compact structure.

Original languageEnglish
Article number045208
JournalPhysical Review C
Volume98
Issue number4
DOIs
Publication statusPublished - Oct 22 2018

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quark models
quarks
estimates
baryons
mesons
stabilization
scaling
expansion
ground state
thresholds
energy
configurations

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Quark model estimate of hidden-charm pentaquark resonances. / Hiyama, Emiko; Hosaka, Atsushi; Oka, Makoto; Richard, Jean Marc.

In: Physical Review C, Vol. 98, No. 4, 045208, 22.10.2018.

Research output: Contribution to journalArticle

Hiyama, Emiko ; Hosaka, Atsushi ; Oka, Makoto ; Richard, Jean Marc. / Quark model estimate of hidden-charm pentaquark resonances. In: Physical Review C. 2018 ; Vol. 98, No. 4.
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