Cherenkov radiations from Quark Plasma

I propose an observable to declare the formation of Quark Plasma (QP) without any doubts. It is the observation of Cherenkov photon radiations of the order of 100 MeV associated with fast light charged particles while they are penetrating hot dense mediums produced in high energy heavy ion collisions. Direct observations of Cherenkov rings associated with charged leptons decayed from $Z^0$ boson or Drell-Yang process which occur earlier than the QCD medium formation or photon emissions associated with high $p_t$ hadrons would be a definite signature of QP formation.