Vorticity and polarization of hyperons in heavy-ion collisions

Thursday 21 Jan 2021, 15:00 → 16:00 Europe/Zurich

CERN

Abstract:

Global polarization in heavy-ion collisions arises from the partial conversion of the orbital angular momentum of colliding nuclei into the spin angular momentum of particles produced in the collisions. The STAR Collaboration observed \Lambda global polarization in Au+Au collisions at \sqrt{s_{NN}} = 7.7—200 GeV, indicating a thermal vorticity of the system. In this talk, experimental results on the hyperon polarizations including new measurements with \Xi and \Omega hyperons as well as local polarization along the beam direction will be reviewed and the physics implication will be discussed with theoretical calculations.
 

15:00 → 16:00 Vorticity and polarization of hyperons in heavy-ion collisions

15:00-15:45 Seminar

15:45-16:00 Common discussion

Speaker: Dr Takafumi Niida (University of Tsukuba)

NA61SHINEseminar2021_niida.pdf

Recording