The Rise and Fall of Pentaquarks in Experiments

  title={The Rise and Fall of Pentaquarks in Experiments},
  author={R. Schumacher},
  journal={arXiv: Nuclear Experiment},
Experimental evidence for and against the existence of pentaquarks has accumulated rapidly in the last three years. If they exist, they would be dramatic examples of hadronic states beyond our well‐tested and successful particle models. The positive evidence suggests existence of baryonic objects with widths of at most a few MeV, some displaying exotic quantum numbers, such as baryons with strangeness S = +1. The non‐observations of these states have often come from reaction channels very… Expand

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