Magnetic Field Effects on Hadron Yields and Fluctuations

Volodymyr Vovchenko

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arXiv · 2410.00291

Magnetic Field Effects on Hadron Yields and Fluctuations

Volodymyr Vovchenko

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Abstract

We explore the impact of an external magnetic field on hadron yields and fluctuations in a thermalized system within the hadron resonance gas (HRG) model using an expanded Thermal-FIST package. The magnetic field sizably enhances the final proton-to-pion (p/$\pi$) ratio due to $\Delta(1232)^{++}$ decay feeddown indicating that this ratio may serve as a potential magnetometer for freeze-out conditions. At the same time, magnetic field does not generate additional dynamical fluctuations of hadron numbers. This suggests that fluctuations in heavy-ion collisions provide limited additional information about the magnetic field beyond what is already inferred from mean multiplicities.

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Volodymyr Vovchenko. 2024-10-01. Magnetic Field Effects on Hadron Yields and Fluctuations. https://arxiv.org/abs/2410.00291

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