Compact ssscc¯ pentaquark states predicted by a quark model

Qi Meng, Emiko Hiyama, Kadir Utku Can, Philipp Gubler, Makoto Oka, Atsushi Hosaka, Hongshi Zong

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1 Citation (Scopus)

Abstract

Several compact ssscc¯ pentaquark resonances are predicted in a potential quark model. The Hamiltonian is the best available one, which reproduces the masses of the low-lying charmed and strange hadrons well. Full five-body calculations are carried out by the use of the Gaussian expansion method, and the relevant baryon-meson thresholds are taken into account explicitly. Employing the real scaling method, we predict four sharp resonances, JP=1/2 (E=5180 MeV, Γ=20 MeV), 5/2 (5645 MeV, 30 MeV), 5/2 (5670 MeV, 50 MeV), and 1/2+ (5360 MeV, 80 MeV). These are the candidates of compact pentaquark resonance states from the current best quark model, which should be confirmed either by experiments or lattice QCD calculations.

Original languageEnglish
Article number135028
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume798
DOIs
Publication statusPublished - Nov 10 2019

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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