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Why pentaquarks are seen in some experiments and not in others

High Energy Physics - Phenomenology 2017-08-23 v1

Abstract

The Θ+\Theta^+ Pentaquark is a Very narrow Γ1\Gamma \approx 1 MeV KN Resonance. Why do some experiments see it and others do not? The lowest quark configuration that can describe it is exotic uuddsˉuudd \bar s. Why have no exotics been seen before? Is this the beginning of a new spectroscopy? Can it help toteach us about How QCD makes hadrons from quarks and gluons?

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Cite

@article{arxiv.hep-ph/0501209,
  title  = {Why pentaquarks are seen in some experiments and not in others},
  author = {Harry J. Lipkin},
  journal= {arXiv preprint arXiv:hep-ph/0501209},
  year   = {2017}
}

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4 pages