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Compressed Baryonic Matter
The nuclear liquid, which makes up the nucleus of all heavier elements, is a highly incompressible substance.
Yet, the huge gravitational force acting in neutron stars is strong enough to compress its core to densities exceeding nuclear ground state density by factors.
Today, it is not finally understood if under such conditions other phases of QCD matter are realized like one where Spontaneously Broken Chiral Symmetry is restored and local Color Confinement lifted. Such a scenario could even be more likely when binary NS systems merge and matter in the central region is further more heated to temperatures of 50 MeV/k and more.
A way to study the microscopic properties of QCD matter under comparable conditions in the laboratory are collisions of heavy ions at energies of a few GeV per nucleon.

This colloquium will address results of such experiments conducted by the HADES collaboration. Emphasis will be put on electromagnetic probes (dileptons), which are emitted throughout the whole evolution of the nuclear collision zone. It will also be discussed how important a detailed knowledge of the electromagnetic properties of baryons is in order to extract relevant information of the properties of the matter formed in heavy-ion collisions.
Also, an outlook will be given on activities planned at FAIR and other places around the world in order to explore in detail the QCD phase diagram at high net-baryon densities.
Joachim Stroth
Goethe University - GSI Darmstadt
24/05/2018 à 14:00
IPN Orsay, salle des Conseils, bâtiment 100

Notes de dernières minutes :

PDF - 135.1 ko



Institut de Physique Nucléaire Orsay - 15 rue Georges CLEMENCEAU - 91406 ORSAY (FRANCE)
UMR 8608 - CNRS/IN2P3

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