Testing the χc1p composite nature of the Pc(4450)

By U. Meissner, J. A. Oller. 2015

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Abstract Making use of a recently proposed formalism, we analyze the composite nature of the P c ( 4450 ) resonance observed by LHCb. We show that the present data suggest that this state is almost entirely made of a χ c 1 and a proton, due to the close proximity to this threshold. This also suppresses the decay modes into other, lighter channels, in our study represented by J / Ψ p . We further argue that this is very similar to the case of the scalar meson f 0 ( 980 ) which is located closely to the K K ¯ threshold and has a suppressed decay into the lighter ππ channel.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2a04f754ed47f7833cf8e6f17d1b224469e1faf2

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In Nuclear and High Energy Physics

  1. T. Skwarnicki
  2. J. Rosner
  3. M. Karliner

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