2010/03/31 by Masayuki Asakawa, Abhijit Majumder, Berndt Müller · 1 citation
Physics and Astronomy · #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.81.064912
published as Phys.Rev.C81:064912,2010
arxiv created 2010/06/10 · arxiv updated 2015/03/13
We discuss various mechanisms for the creation of an asymmetric charge fluctuation with respect to the reaction plane among hadrons emitted in relativistic heavy-ion collisions. We show that such mechanisms exist in both, the hadronic gas and the partonic phases of QCD. The mechanisms considered here all require the presence of a strong magnetic field (the ``chiral magnetic effect''), but they do not involve parity or charge-parity violations. We analyze how a transient local electric current fluctuation generated by the chiral magnetic effect can dynamically evolve into an asymmetric charge distribution among the final-state hadrons in momentum space. We estimate the magnitude of the event-by-event fluctuations of the final-state charge asymmetry due to the partonic and hadronic mechanisms.