Magnetohydrodynamics, charged currents and directed flow in heavy ion collisions

20 May 2014, 11:30
20m
europium (darmstadtium)

europium

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Correlations and Fluctuations Correlations and fluctuations

Speaker

Umut Gursoy (University of Utrecht (NL))

Description

The hot QCD matter produced in any heavy ion collision with a nonzero impact parameter is produced within a strong magnetic field. We study the imprint that these fields leave on the azimuthal distributions and correlations of the produced charged hadrons. The magnetic field is time-dependent and the medium is expanding, which leads to the induction of charged currents due to the combination of Faraday and Hall effects. We find that these currents result in a charge-dependent directed flow $v_1$ that is odd in rapidity and odd under charge exchange. It can be detected by measuring correlations between the directed flow of charged hadrons at different rapidities, $\langle v_1^\pm (y_1) v_1^\pm (y_2) \rangle$

Primary authors

Dmitri Kharzeev (Stony Brook U./BNL) Krishna Rajagopal (Massachusetts Inst. of Technology (US)) Umut Gursoy (University of Utrecht (NL))

Presentation Materials