Regular Article - Theoretical Physics
Heavy baryon decay widths in the large limit in chiral theory
M. Smoluchowski Institute of Physics, Jagiellonian University, S. Łojasiewicza 11, 30-348, Kraków, Poland
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Accepted: 22 August 2018
Published online: 29 August 2018
We propose large generalizations for the “diquark” representations of relevant for positive parity heavy baryons, including putative exotic states. Next, within the framework of the Chiral Quark Soliton Model, we calculate heavy baryon masses and decay widths. We show that in the limit of all decay widths vanish, including the widths of exotica. This result is in fact more general than the model itself, as it relies only on the underlying symmetries: i.e. and hedgehog symmetry. Furthermore, using explicit model formulae for the decay constants in the non-realtivistic limit, we show that there is a hierarchy of the decay couplings, which may explain observed pattern of experimental widths.
© The Author(s), 2018