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Nuclear Theory

arXiv:1512.02770 (nucl-th)
[Submitted on 9 Dec 2015]

Title:Penta-quark States with Strangeness, Hidden Charm and Beauty

Authors:Jia-Jun Wu, B. S. Zou
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Abstract:The classical quenched quark models with three constituent quarks provide a good description for the baryon spatial ground states, but fail to reproduce the spectrum of baryon excited states. More and more evidences suggest that unquenched effects with multi-quark dynamics are necessary ingredients to solve the problem. Several new hyperon resonances reported recently could fit in the picture of penta-quark states. Based on this picture, some new hyperon excited states were predicted to exist; meanwhile with extension from strangeness to charm and beauty, super-heavy narrow $N^*$ and $\Lambda^*$ resonances with hidden charm or beauty were predicted to be around 4.3 and 11 GeV, respectively. Recently, two of such $N^*$ with hidden charm might have been observed by the LHCb experiment. More of those states are expected to be observed in near future. This opens a new window in order to study hadronic dynamics for the multi-quark states.
Comments: Talk given at the 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015), Osaka, May 25--28 2015
Subjects: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
Cite as: arXiv:1512.02770 [nucl-th]
  (or arXiv:1512.02770v1 [nucl-th] for this version)
  https://doi.org/10.48550/arXiv.1512.02770
Related DOI: https://doi.org/10.7566/JPSCP.10.010016

Submission history

From: Jiajun Wu [view email]
[v1] Wed, 9 Dec 2015 07:08:11 UTC (148 KB)
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