This seminar will be broadcast via zoom. You can join using the URL https://bnl.zoomgov.com/j/1618286847?pwd=N20xUlNMYjhJVThoQkp5TktJdmQ5dz09.

Nuclear Physics Seminars at BNL

Highlights of the charge separation measurements using the RΨm(ΔS) correlator implications for the chiral magnetic effect

by Niseem Abdelrahman (Stony Brook University)

US/Eastern
5898
Description

The study of anomalous transport in QGP can give fundamental insight not only on the complex interplay of chiral symmetry restoration, axial anomaly, and gluon topology but also on the evolution of magnetic fields in the early Universe.  A primary anomalous process predicted to occur in the magnetized QGP, created in RHIC collisions is the chiral magnetic effect (CME). 
In this talk, I will discuss the rudiments and the results from studies involving the use of a new charge sensitive correlator RΨm(ΔS), designed to detect and characterize the CME. The experimental measurements performed with the RΨm(ΔS) correlator, show the expected patterns for background-driven charge separation for the measurements relative to Ψ3 and those relative to Ψ2 for the p(d)+Au systems. By contrast, the Au+Au measurements relative to Ψ2, show event-shape-independent RΨ2(ΔS) distributions consistent with a CME-driven charge separation, quantified by widths having an inverse relationship to the Fourier dipole coefficient a~1, which evaluates the CME. The RΨ2(ΔS) results and their dependencies on the system-size, centrality, and event-shape, as well as the future use of the correlator, will be discussed in details.

Organised by

Jiangyong Jia