Speaker
Dr
Claudia Hoehne
(University of Giessen)
Description
The CBM experiment will investigate highly compressed baryonic matter
created in A+A collisions at the new FAIR accelerator. With a beam energy
range up to 11 AGeV for the heaviest nuclei at the SIS 100 accelerator, CBM
will investigate the QCD phase diagram in the intermediate range, i.e. at
moderate temperatures but high net-baryon densities. This research program
is thus complementary to the studies performed at the high-energy
accelerators LHC and RHIC which focus on strongly interacting matter at high
temperatures and essentially zero net-baryon density. The intermediate range
of the QCD phase diagram is of particular interest because, compared to the
high energy case, the strongly interacting matter created here is expected
to have very different characteristics due to the high net-baryon densities.
Different to the crossover between partonic and hadronic matter seen at low
net-baryon densities, a first order phase transition ending in a critical
point and possibly new high-density phases of strongly interacting matter
are expected.
In this range of the QCD phase diagram only exploratory measurements have
been performed so far. CBM, as a second generation, high-luminosity
experiment, will substantially improve our knowledge of matter created in
this region of the QCD phase diagram and characterize its properties by
measuring rare probes such as multi-strange hyperons, dileptons or charm,
but also with event-by-event fluctuations of conserved quantities, and
collective flow of identified particles. Due to the unprecedented reaction
rates CBM has a high discovery potential. The experimental preparations in
terms of detector development, feasibility studies and fast track
reconstruction are progressing well such that CBM will be ready with the
FAIR start.
