Local polarization and isothermal local equilibrium in relativistic heavy ion collisions

Autor:	Becattini, F., Buzzegoli, M., Inghirami, G., Karpenko, I., Palermo, A.
Rok vydání:	2021
Předmět:	Nuclear Theory High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.127.272302
Popis:	We show that the inclusion of a recently found additional term of the spin polarization vector at local equilibrium which is linear in the symmetrized gradients of the velocity field, and the assumption of hadron production at constant temperature restore the quantitative agreement between hydrodynamic model predictions and local polarization measurements in relativistic heavy ion collisions at $\sqrt{s_{\rm NN}} = 200$ GeV. The longitudinal component of the spin polarization vector turns out to be very sensitive to the temperature value, with a good fit around 155 MeV. The implications of this finding are discussed. Comment: 6 pages, 6 figures. Version accepted for publication in Phys.Rev.Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2103.14621 Zobrazit plný text záznamu View this record from Arxiv