Speaker
Mr
Krzysztof Nowakowski
(Jagiellonian University)
Description
Spectrum of excited states of single and double strange hyperons is only poorly known. Their internal structure is controversially discussed within several models e.g. quark and bag models, or even pentaquarks or meson-bayrion molecules like the famous $\Lambda$(1405).
One of the kays to hyperons electromagnetic stucture are form factors which are predicted to be an ideal tool to discriminate between various models. The space-like region for transition form-fatctors have been already measured by the CLAS collaboration. The Hades detector is a perfect tool to perform similar research in the time-like region.
The HADES detector is a versatile detector specialized for dilepton and strangeness measurements at SIS18 energies. It has been recently updated by an electromagnetic calorimeter,
a new RICH photon detector. In next year an additional forward detector will be installed. It will extend an acceptance for forward peaked hyperons decays. All of this together, with improved SIS18 operating with protons at maximum energy 4.5 GeV, opens up new experimental possibilities.
In my contribution I would like to present a feasibility studies for new experiments at 4.5 GeV beam kinetic energy in terms of excited hyperons Dalitz decays with use of the forward detector. Additionally a ongoing analysis of an existing data from pp@3.5 GeV and pNb@3.5 GeV experiments could give a predictions for count rates and production cross-sections.
Primary author
Mr
Krzysztof Nowakowski
(Jagiellonian University)
