Jan 10 – 15, 2021
Weizmann Institute of Science
Asia/Jerusalem timezone
See you at IS2023 in Copenhagen in June 2023

Searching for the chiral magnetic effect with the sliding dumbbell method in Pb-Pb collisions at √sNN = 2.76 TeV with ALICE

Jan 10, 2021, 7:45 PM
1h 30m
Patio (vDLCC)



bullet talk (poster) The initial stages of heavy-ion collisions Poster


Ms Anjali Sharma (Panjab University (IN))


The chiral imbalance along with the magnetic field produced during heavy-ion collisions may cause a charge separation in the magnetic field direction, a phenomenon known as the chiral magnetic effect (CME). A new technique, the sliding dumbbell method (SDM), is designed to study the CME-like charge separation. In the SDM, the whole azimuthal plane is scanned for each event by sliding the dumbbell of 90 degree size in steps of 1 degree searching for the maximum of sum of the positive charge fraction on one side and the negative charge fraction on the other side of the dumbbell, the Db_{\pm}^{max}. The distribution of maxima is divided into 10 percentile bins for each centrality to get sample of events enriched in CME-like signal. In this contribution, two- and three-particle azimuthal correlations for different charge separations will be presented in Pb-Pb collisions at √sNN = 2.76 TeV measured with the ALICE detector. Results will be shown for different bins in each collision centrality, along with those of reshuffled charges to estimate the background contribution to the measurement. The CME-like signal is significantly magnified in the top percentile bin of the Db_{\pm}^{max} distribution for each collision centrality, which became possible using the SDM method.

Primary author

Ms Anjali Sharma (Panjab University (IN))

Presentation materials