Energy and system-size dependence of the Chiral Magnetic Effect
1 Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
2 GSI, Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
3 Bogolyubov Institute for Theoretical Physics, 03680 Kiev, Ukraine
4 Institute für Theoretische Physik, Universitat Frankfurt, 60438 Germany
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The energy dependence of the local and violation in Au+Au and Cu+Cu collisions in a large energy range is estimated within a simple phenomenological model. It is expected that at LHC the chiral magnetic effect will be about 20 times weaker than at RHIC. At lower energy range, covered by the low-energy scan at RHIC and future NICA/FAIR facilities, the created magnetic field strength and energy density of deconfined matter are rather high providing necessary conditions for the chiral magnetic effect. However, the particular model for the chiral magnetic effect predicts that this effect should vanish sharply at energy somewhere above the top SPS one. To elucidate CME background effects the Hadron-String-Dynamics (HSD) transport model including electromagnetic fields is put forward. Importance of new planning experiments at LHC and for the low-energy RHIC scan program is emphasized.
© Owned by the authors, published by EDP Sciences, 2011