Why the Θ + is seen in some experiments and not in others – a possible explanation

The contradiction between evidence for and against the existence of the Θ pentaquark might be resolved if it only appears as a result of a particular production mechanism which is present in some experiments and absent in others. We examine the implications of Θ production via decay of a cryptoexotic N resonance with a mass of about 2.4 GeV corresponding to… (More)