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arXiv · 1209.0187

Exotic baryons from a heavy meson and a nucleon

Yasuhiro Yamaguchi·Shunsuke Ohkoda·Shigehiro Yasui·Atsushi Hosaka
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Abstract

We evaluate a hadronic molecule formed by a heavy meson and a nucleon respecting heavy quark symmetry. The tensor force of pion exchange potential plays a dominate role to produce an strong attraction in this system. Solving coupled channel Schr\"odinger equations for PN and P* N, we find many bound and resonant states with isospin I=0 while there are few resonances in I=1 state. The rich structures with I=0 indicate that the spectrum of heavy baryons near the threshold is influenced by the contributions from such hadron composite structures.

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Yasuhiro Yamaguchi, Shunsuke Ohkoda, Shigehiro Yasui, Atsushi Hosaka. 2012-09-02. Exotic baryons from a heavy meson and a nucleon. https://doi.org/10.1007/s00601-013-0627-z

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