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@ARTICLE{Haidenbauer:897208,
      author       = {Haidenbauer, Johann and Meißner, Ulf-G.},
      title        = {{O}n the structure in the Λ{N} cross section at the Σ{N}
                      threshold},
      journal      = {Chinese physics / C},
      volume       = {45},
      number       = {9},
      issn         = {2058-6132},
      address      = {Bristol [u.a.]},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2021-03674},
      pages        = {094104 -},
      year         = {2021},
      abstract     = {The complexity of threshold phenomena is exemplified on a
                      prominent and long-known case - the structure in the
                      $\Lambda p$ cross section (invariant mass spectrum) at the
                      opening of the $\Sigma N$ channel. The mass splitting
                      between the $\Sigma$ baryons together with the angular
                      momentum coupling in the $^3S_1$- $^3D_1$ partial wave imply
                      that, in principle, up to six channels are involved.
                      Utilizing hyperon-nucleon potentials that provide an
                      excellent description of the available low-energy $\Lambda
                      p$ and $\Sigma N$ scattering data, the shape of the
                      resulting $\Lambda p$ cross section is discussed and the
                      poles near the $\Sigma N$ threshold are determined. Evidence
                      for a strangeness $S=-1$ dibaryon is provided, in the form
                      of a (unstable) $\Sigma N$ bound state in the vicinity of
                      the $\Sigma N$ threshold. Predictions for level shifts and
                      widths of $\Sigma^-p$ atomic states are given.},
      cin          = {IAS-4 / IKP-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
      pnm          = {5111 - Domain-Specific Simulation Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511) / DFG project
                      196253076 - TRR 110: Symmetrien und Strukturbildung in der
                      Quantenchromodynamik (196253076)},
      pid          = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000692007400001},
      doi          = {10.1088/1674-1137/ac0e89},
      url          = {https://juser.fz-juelich.de/record/897208},
}