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磁自旋进动产生的电荷奇异性超子极化

Charge-Odd Hyperon Polarization from Magnetic Spin Precession

Dushmanta Sahu, Captain R. Singh

arXiv 2607.15384首次发表:更新:

AI 中文总结

研究非中心重离子碰撞中极化奇异夸克的拉莫尔进动,它或为电荷奇异性超子极化源,通过相反电荷夸克的相反进动相位混合产生极化分裂,在特定能量下分裂达亚百分比水平,可直接探测磁场驱动的解禁闭QCD物质自旋动力学。

AI 中文摘要

我们证明,极化奇异夸克在非中心重离子碰撞产生的强磁场中经历拉莫尔进动,这可能是电荷奇异性超子极化的一个来源。奇异夸克和反奇异夸克携带相反电荷,因此获得相反的进动相位。这种相反的自旋旋转混合了横向和纵向极化分量,在Λ和反Λ超子之间产生可测量的极化分裂。对于磁场演化情况,预测的分裂达到亚百分比水平,在RHIC和LHC能量下处于实验可及范围内。这些电荷分辨的超子极化可观测量为超相对论重离子碰撞中磁场驱动的解禁闭QCD物质的自旋动力学提供了直接探测。

英文摘要

We demonstrate that polarized strange quarks undergo Larmor precession in the intense magnetic field produced in non-central heavy-ion collisions and as a possible source of charge-odd hyperon polarization. Strange and antistrange quarks carry opposite electric charges and therefore acquire opposite precession phases. This opposite spin rotation mixes the transverse and longitudinal polarization components, yielding measurable polarization splittings between $Λ$ and $\barΛ$ hyperons. For the magnetic-field evolution scenarios, the predicted splittings reach the sub-percent level and are within the experimentally accessible range at RHIC and the LHC energies. These charge-resolved hyperon polarization observables provide a direct probe of magnetic-field-driven spin dynamics of deconfined QCD matter at ultra-relativistic heavy-ion collisions.

Comments6 pages and 3 figures

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