Approaches to QGP Detection (II): - Large cross-section probes -

SPS

inverse slopes

Info: ? Conditions at mixed, hadronic & freeze-out phases.

1. Strangeness Enhancement:

Large gluon densities (gg? ss)

and/or (partial) decrease of ms
Production of K+, K-, L, X, W mesons:
• Strange hadrons

2. In-medium vector mesons :

(Partial) chiral symmetry restoration

Mass, width of r, w,F. BR F ? e+e-,K+K- (dMɝ MeV)

• Electrons, Muons, Charged Hadrons

3. Baryo-chemical potential at freeze-out:

Particles ratios

• Hadrons

4. Temp./velocities at freeze-out :

Expansion dynamics mixed phase

mT distributions below ~2 GeV/c:

• Hadrons

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