Compact ssscc̄ pentaquark states predicted by a quark model

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

Compact ssscc̄ pentaquark states predicted by a quark model

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

Experimental Particle Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Several compact ssscc̄ 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, J^P = 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 language	English
Journal	Unknown Journal
Publication status	Published - Jun 29 2019

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title = "Compact sssc{\=c} pentaquark states predicted by a quark model",

abstract = "Several compact sssc{\=c} 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.",

author = "Qi Meng and Emiko Hiyama and Can, {Kadir Utku} and Philipp Gubler and Makoto Oka and Atsushi Hosaka and Hongshi Zong",

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language = "English",

journal = "Quaternary International",

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T1 - Compact ssscc̄ pentaquark states predicted by a quark model

AU - Meng, Qi

AU - Hiyama, Emiko

AU - Can, Kadir Utku

AU - Gubler, Philipp

AU - Oka, Makoto

AU - Hosaka, Atsushi

AU - Zong, Hongshi

PY - 2019/6/29

Y1 - 2019/6/29

N2 - Several compact ssscc̄ 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.

AB - Several compact ssscc̄ 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.

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