Physics Letters B (Dec 2020)
Turning up and down strong magnetic fields in relativistic nuclear collisions
Abstract
I show that the average transverse momentum, 〈pt〉, of the hadrons emitted in relativistic nuclear collisions can be used as a “knob” to control the strength of the magnetic field induced by the spectator and the participant protons over the overlap region. I thus argue that any observable sensitive to this magnetic field is nontrivially correlated with 〈pt〉 at a given collision centrality.