4–10 Apr 2022
Auditorium Maximum UJ
Europe/Warsaw timezone
Proceedings submission deadline extended to September 11, 2022

Search for the chiral effect using isobar collisions and BES-II data from STAR

7 Apr 2022, 10:20
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

YU HU

Description

Quantum Chromodynamics allows for the formation of parity-odd domains inside the medium produced in heavy-ion collisions associated with a net chirality of the quarks. As a consequence, the Chiral Magnetic Effect (CME) and Chiral Vortical Effect (CVE) are phenomena predicted to occur and cause electric-charge and baryonic-charge separation along the direction of the magnetic field and vorticity created in heavy-ion collisions, respectively. Recently, the STAR experiment has performed a precision measurement of the possible difference in charge separation along the magnetic field direction between isobar systems $^{96}_{44}{\rm Ru}+^{96}_{44}{\rm Ru}$ and $^{96}_{40}{\rm Zr}+^{96}_{40}{\rm Zr}$ at $\sqrt{s_{\rm NN}}=200$ GeV. In this talk, we will present the findings from the isobar blind analysis. While the isobar blind analyses were dedicated towards CME searches at the top RHIC energy, the RHIC BES-II program provides a unique opportunity and advantages at lower energies, where the magnetic field lifetime may be longer than those at the higher energy collisions. We will also present the latest results on the search for CME and CVE at 27 GeV Au+Au collisions with the unique capabilities of the STAR Event Plane Detector.

Primary author

Presentation materials