Λ and Λ¯ polarization in Au–Au collisions at RHIC

Polarization in relativistic heavy ion collisions: a theoretical perspective

“…It is presently an unsettled issue whether a formula like (14) can be obtained without using the spin tensor, that is in a quantum field theory where the stress-energy tensor is the symmetrized Belinfante tensor. The issue is a relevant one for if (14) was dependent on a spin tensor, S would acquire a full physical meaning and relativistic hydrodynamics -to say the least -should be extended [19] to fluids with spin.…”

“…The issue is a relevant one for if (14) was dependent on a spin tensor, S would acquire a full physical meaning and relativistic hydrodynamics -to say the least -should be extended [19] to fluids with spin.…”

“…To complete the theoretical overview on the subject, it should be pointed out that different approaches, as well as additional mechanisms, to the Λ polarization in relativistic nuclear collisions were proposed in refs. [13][14][15][16].…”

Study of $$\Lambda $$ Λ polarization in relativistic nuclear collisions at $$\sqrt{s_\mathrm {NN}}=7.7$$ s NN = 7.7 –200 GeV

“…To complete the theoretical overview on the subject, it should be pointed out that different approaches, as well as additional mechanisms, to the polarization in relativistic nuclear collisions were proposed in Refs. [10][11][12][13][14].…”

Λpolarization in peripheral heavy ion collisions

“…However, at the freeze-out stage, the magnetic field produced by the moving spectators is estimated to be of the order of 2 × 10 10 T [12] at √ s NN = 200 GeV so that the resulting polarization is of the order of μ N g B/T ≈ 10 −6 , i.e., at least four orders of magnitude less than our predicted value. The polarization of hyperons has been approached with different models (e.g., [8,13]). Recently, Ref.…”