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Article overview
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Pentaquark components in low-lying baryon resonances | | Kai Xu
; Attaphon Kaewsnod
; Zheng Zhao
; Xuyang Liu
; Sorakrai Srisuphaphon
; Ayut Limphirat
; Yupeng Yan
; | | Date: |
11 Feb 2020 | | Abstract: | We study pentaquark states of both light $q^4ar q$ and hidden heavy $q^3
Qar Q$ (q = u,d,s quark in SU(3) flavor symmetry; Q = c, b quark) systems
with a general group theory approach in the constituent quark model, and the
spectrum of light baryon resonances in the ansatz that the $l=1$ baryon states
may consist of the $q^3$ as well as $q^4ar q$ pentaquark component. The model
is fitted to ground state baryons and light baryon resonances which are
believed to be normal three-quark states. The work reveals that the
$N(1535)1/2^{-}$ and $N(1520)3/2^-$ may consist of a large $q^4ar q$
component while the $N(1895)1/2^{-}$ and $N(1875)3/2^-$ are respectively their
partners, and the $N^+(1685)$ might be a $q^4ar q$ state. By the way, a new
set of color-spin-flavor-spatial wave function for $q^3 Qar Q$ systems in the
compact pentaquark picture are constructed systematically for studying hidden
charm pentaquark states. | | Source: | arXiv, 2002.4230 | | Services: | Forum | Review | PDF | Favorites | |
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