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arXiv · 2404.05032

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

Han-Sheng Li·Yicheng Feng·Fuqiang Wang
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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 ($\Delta v_{2,\rm pair}$). We investigate $\Delta v_{2,\rm pair}$ and found its sensitivity to CME to be similar to that of the $\Delta\gamma$ observable.

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Han-Sheng Li, Yicheng Feng, Fuqiang Wang. 2024-04-07. Influence of the chiral magnetic effect on particle-pair elliptic anisotropy. https://doi.org/10.1103/physrevc.111.024904

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