Apr 4 – 10, 2022
Auditorium Maximum UJ
Europe/Warsaw timezone

Interpretation of Λ hyperons spin polarization measurements

Apr 5, 2022, 5:10 PM
20m
small aula (Auditorium Maximum UJ)

small aula

Auditorium Maximum UJ

Oral presentation Chirality, vorticity and spin polarization Parallel Session T02: Chirality, vorticity and spin polarization

Speaker

Dr Radoslaw Ryblewski (Institute of Nuclear Physics PAN)

Description

The physics interpretation of the recent measurements of the spin polarization of Λ hyperons produced in relativistic heavy-ion collisions is discussed. It is suggested that the polarization measured in the Λ rest frame should be projected along the direction of the total angular momentum that is first transformed to the same frame, and only then averaged over Λ’s with different momenta in the center-of-mass frame. While the improved procedure is not expected to significantly change the present results regarding the global spin polarization, it may affect the estimates of the magnitude of the polarization and its energy dependence. Such a treatment is also generally more appropriate whenever directions in the Λ rest frame and in the center-of-mass frame are compared.

Primary authors

Dr Radoslaw Ryblewski (Institute of Nuclear Physics PAN) Wojciech Florkowski (Jagiellonian University)

Presentation materials