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Dibaryons at COSY

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Abstract

Experiments at the Juelich Cooler Synchrotron (COSY) have now found compelling evidence for a new state in the two-baryon system with mass 2380 MeV and width 70 MeV. The structure, containing six valence quarks, constitutes a so-called dibaryon, either a hexaquark or a hadronic molecule. The new particle denoted now d *(2380) has quantum numbers I(J p) = 0(3+). The present knowledge about the d * dibaryon as well as other implications and possible future experiments are discussed. Di-baryonic systems with strangeness, like K - p p or hypothetical H-dibaryon are outside the scope of this paper.

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Authors and Affiliations

  1. Physikalisches Institut, Eberhard–Karls–Universität Tübingen, Auf der Morgenstelle 14, 72076, Tübingen, Germany

    M. Bashkanov & H. Clement

Authors
  1. M. Bashkanov
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  2. H. Clement
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T. Skorodko for the WASA-at-COSY Collaboration

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Correspondence to M. Bashkanov.

Additional information

Proceedings of the International Conference on Exotic Atoms and Related Topics (EXA 2014), Vienna, Austria, 15–19 September 2014.

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Bashkanov, M., Clement, H. & T. Skorodko for the WASA-at-COSY Collaboration. Dibaryons at COSY. Hyperfine Interact 234, 57–62 (2015). https://doi.org/10.1007/s10751-015-1190-4

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