Coupled-channel effects in hadron–hadron correlation functions

Abstract Two-particle momentum correlation functions as measured in heavy ion collisions or in high-energetic proton–proton collisions are studied. Special emphasis is put on systems like ΛΛ or K − p where effects from the coupling to other channels could be relevant. In both cases other channels open at relatively low momenta or are already open at the reaction threshold. To have a solid basis, realistic coupled-channel interactions for Λ Λ − Ξ N − Λ Σ − Σ Σ and π Λ − π Σ − K ¯ N are utilized in the actual calculations. It is found that the opening of the Ξ N channel leaves a trace in the ΛΛ correlation function that could be detectable in experiments. Should the proposed H -dibaryon be located close to or below the Ξ N it will have a very pronounced effect. The presence of open channels in systems like Ξ − p or K − p does influence the correlation functions significantly at low momenta and will certainly complicate any dedicated analysis.

• Publication year

  2018

• Venue

  Nuclear Physics

• Publication date

  2018-08-15

• Fields of study

  Physics

• Identifiers
  DOI 10.1016/j.nuclphysa.2018.10.090arXiv 1808.05049
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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