Orateur
Dr
Alexander Botvina
(FIAS)
Description
Investigation of hypernuclei is a rapidly progressing field of nuclear
physics, since they open both opportunities to improve methods of
traditional nuclear studies and new horizons for studying particle physics
and nuclear astrophysics. Within dynamical and statistical theories we
study the main regularities in the production of hypernuclei emerging from
the projectile and target residues in relativistic ion collisions. This
process will allow to study the mechanisms of peripheral collisions and
the properties of hyper-matter of low temperatures, including
hyperon-hyperon interactions at low energies. We demonstrate that the
yields of hypernuclei increase considerably at beam energies above the
energy threshold for Lambda hyperons, followed by a saturation for yields of
hypernuclei with increasing the beam energy up to few TeV (LHC energies) [1].
These hypernuclei have a broad distribution in masses and isospin. They can
even reach beyond the neutron and proton drip-lines since they are stable
with respect to nucleon emission [2]. Weak decay of such hypernuclei may
lead to formation of normal nuclei beyond the drip-lines also, thus
providing a unique chance for reaching island of stability on the nuclear
chart. The production of specific hypernuclei depend strongly on the
isotopic composition of the projectile, therefore, it will be possible
to obtain exotic hypernuclei that may be difficult to reach in traditional
hypernuclear experiments [1]. The perspectives of hypernuclear studies
involving these novel processes at the present accelerators are discussed.
[1] A.S. Botvina, K.K. Gudima, and J. Pochodzalla,
Phys. Rev. C88, 054605 (2013).
[2] N. Buyukcizmeci, A.S. Botvina, J. Pochodzalla, and M. Bleicher,
Phys. Rev. C88, 014611 (2013).
Auteur principal
Dr
Alexander Botvina
(FIAS)
