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PreprintCC BY 4.0arXiv

Probing the Spatial Coherence of Chiral-Imbalance Fluctuations with Hyperon Spin Correlations

  • Guangyu Zheng
  • Zilin Yuan
  • Mei Huang
  • Guannan Xie
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Abstract

Topological fluctuations in the quark-gluon plasma can generate local chiral imbalances whose spatial coherence remains difficult to access with conventional charge-separation measurements. We propose differential hyperon-pair spin correlations as a probe of both the strength and spatial organization of these fluctuations. Fluctuations of the axial chemical potential μ5 can induce pair correlations even when the mean helicity polarization vanishes. Using the AMPT model, we find that the magnitude of the hyperon spin correlation probes the magnitude and spatial coherence scale of μ5, while the ratio of short- and long-range correlations varies strongly with the spatial coherence scale, but only weakly with μ5 over the range of explored parameters. These observables provide an experimentally testable strategy for constraining the spatial structure of chiral-imbalance fluctuations.

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Cite

BibTeXRIS
BibTeX
@misc{zheng2026probing,
  title = {{Probing the Spatial Coherence of Chiral-Imbalance Fluctuations with Hyperon Spin Correlations}},
  author = {Guangyu Zheng and Zilin Yuan and Mei Huang and Guannan Xie},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.04970},
  eprint = {2611.04970},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.04970},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Probing the Spatial Coherence of Chiral-Imbalance Fluctuations with Hyperon Spin Correlations
AU  - Guangyu Zheng
AU  - Zilin Yuan
AU  - Mei Huang
AU  - Guannan Xie
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2611.04970
UR  - https://arxiv.org/abs/2611.04970
AB  - Topological fluctuations in the quark-gluon plasma can generate local chiral imbalances whose spatial coherence remains difficult to access with conventional charge-separation measurements. We propose differential hyperon-pair spin correlations as a probe of both the strength and spatial organization of these fluctuations. Fluctuations of the axial chemical potential μ_5 can induce pair correlations even when the mean helicity polarization vanishes. Using the AMPT model, we find that the magnitude of the hyperon spin correlation probes the magnitude and spatial coherence scale of μ_5, while the ratio of short- and long-range correlations varies strongly with the spatial coherence scale, but only weakly with μ_5 over the range of explored parameters. These observables provide an experimentally testable strategy for constraining the spatial structure of chiral-imbalance fluctuations.
ER  -