In this paper, we propose an observable counting a weighted difference between right-handed and left-handed lepton pairs, which is coined dilepton helical rate. The weight the momentum of pairs projected onto auxiliary vector. We derive rate in quark-gluon plasma with vorticity limit when quark masses are ignored. find maximized vector parallel to vorticity, case it has nearly spherical oblate ...

A new general theoretical framework for entropy production helps demonstrate, in simulations, the of collisionless plasmas, whose evolution has long been an outstanding problem.