Influence of the chiral magnetic effect on particle-pair elliptic anisotropy

Abstract

Chiral Magnetic Effect (CME) is a phenomenon in which electric charge is separated by a strong magnetic field from local domains of chirality imbalance in quantum chromodynamics. The CME-sensitive, azimuthal correlator difference $\Delta \gamma$ between opposite-sign (OS) and same-sign (SS) charged hadron pairs is contaminated by a major physics background proportional to the particle elliptic anisotropy ($v_2$). The CME signal, on the other hand, contributes to the difference in the pair elliptic anisotropies between OS and SS pairs ($\Delta v_{2,\mathrm{pair}}$). We investigate $\Delta v_{2,\mathrm{pair}}$ and found its sensitivity to CME to be similar to that of the $\Delta \gamma$ observable.

6 pages, 7 figures

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Cited by in corpus (2)

• Experimental review on the chiral magnetic effect in relativistic heavy ion collisions
• Investigating event-shape methods in the search for the chiral magnetic effect in relativistic heavy ion collisions