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HK: Fachverband Hadronen und Kerne
HK 49: Nuclear Structure and Dynamics II
HK 49.2: Vortrag
Mittwoch, 18. März 2009, 14:30–14:45, H-ZO 50
Formation of hypernuclei in reactions induced by heavy-ion and hadron beams — •Theodoros Gaitanos, Horst Lenske, and Ulrich Mosel — Institut für Theoretische Physik, Universität Giessen, Germany
The formation of fragments with strangeness degrees of freedom
(hypernuclei) within the GiBUU dynamical transport model combined with a
statistical multifragmentation model (SMM) is investigated in reactions
induced by high energy heavy-ion and hadron beams. Such reactions, which
will be experimentally studied by the HypHI and PANDA collaborations at
the FAIR facility at GSI, are especially well suited for the production
of single and double strangeness hypernuclei allowing to study the
nucleon-hyperon and hyperon-hyperon interactions. A detailed discussion
on the applicability and limitations of the theoretical model are
given. In particular, improvements of the present transport approach
with respect to a better combination with statistical models of
fragmentation and a better overall baryon dynamics at relativistic
energies are investigated. Finally, theoretical predictions on spectra
and inclusive cross sections of single ΛAX and double
ΛΛAX hypernuclei (X=H, He) in
spectator fragmentation in reactions induced by light heavy-ion beams
(12C+12C at 2AGeV) and high
energy hadron beams are presented. The results are relevant for planning
future experiments on
hypernuclear physics at the new GSI- and J-PARC-facilities.
Work supported by BMBF.