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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2504.03248 |
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| _version_ | 1866914172923543552 |
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| author | Hirono, Yuji Ikeda, Kazuki Kharzeev, Dmitri E. Liu, Ziyi Shi, Shuzhe |
| author_facet | Hirono, Yuji Ikeda, Kazuki Kharzeev, Dmitri E. Liu, Ziyi Shi, Shuzhe |
| contents | The detection of the Chiral Magnetic Effect (CME) in relativistic heavy-ion collisions remains challenging due to substantial background contributions that obscure the expected signal. In this Letter, we present a novel machine learning approach for constructing optimized observables that significantly enhance CME detection capabilities. By parameterizing generic observables constructed from flow harmonics and optimizing them to maximize the signal-to-background ratio, we systematically develop CME-sensitive measures that outperform conventional methods. Using simulated data from the Anomalous Viscous Fluid Dynamics framework, our machine learning observables demonstrate up to 90\% higher sensitivity to CME signals compared to traditional $γ$ and $δ$ correlators, while maintaining minimal background contamination. The constructed observables provide physical insight into optimal CME detection strategies, and offer a promising path forward for experimental searches of CME at RHIC and the LHC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_03248 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optimal Observables for the Chiral Magnetic Effect from Machine Learning Hirono, Yuji Ikeda, Kazuki Kharzeev, Dmitri E. Liu, Ziyi Shi, Shuzhe High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory The detection of the Chiral Magnetic Effect (CME) in relativistic heavy-ion collisions remains challenging due to substantial background contributions that obscure the expected signal. In this Letter, we present a novel machine learning approach for constructing optimized observables that significantly enhance CME detection capabilities. By parameterizing generic observables constructed from flow harmonics and optimizing them to maximize the signal-to-background ratio, we systematically develop CME-sensitive measures that outperform conventional methods. Using simulated data from the Anomalous Viscous Fluid Dynamics framework, our machine learning observables demonstrate up to 90\% higher sensitivity to CME signals compared to traditional $γ$ and $δ$ correlators, while maintaining minimal background contamination. The constructed observables provide physical insight into optimal CME detection strategies, and offer a promising path forward for experimental searches of CME at RHIC and the LHC. |
| title | Optimal Observables for the Chiral Magnetic Effect from Machine Learning |
| topic | High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2504.03248 |