Compact ssscc pentaquark states predicted by a quark model
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Date
2019
Authors
Meng, Q.
Hiyama, E.
Can, K.U.
Gubler, P.
Oka, M.
Hosaka, A.
Zong, H.
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Physics Letters B: Nuclear Physics and Particle Physics, 2019; 798:135028-1-135028-8
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Qi Meng, Emiko Hiyama, Kadir Utku Can, Philipp Gubler, Makoto Oka, Atsushi Hosaka, Hongshi Zong
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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=5180MeV, T =20MeV), 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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©2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.