https://doi.org/10.1140/epja/i2019-12880-5
Regular Article - Experimental Physics
Hyperon II: Properties of excited hyperons
1
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115, Bonn, Germany
2
National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, 188300, Gatchina, Russia
* e-mail: klempt@hiskp.uni-bonn.de
Received:
31
July
2019
Accepted:
9
September
2019
Published online:
17
October
2019
We report properties of 
and 
hyperon resonances formed in 
induced reactions. Special emphasis is laid on the analysis of the three-body final states 
and 
and of the quasi-two-body final states 
, 
, 
, 
, and 
. We give pole positions of and hyperon resonances and transition residues from the 
initial to various final states as well as Breit-Wigner masses and widths and decay branching ratios. Twenty resonances and “bumps” reported in the Review of Particle Physics are not required in our fits, evidence for five new resonances is reported. The observed mass spectrum is compared to the spectrum calculated in the Bonn quark model. Three spin doublets, six hyperons, are tentatively assigned to the SU(3) singlet system.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
