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arXiv 2101.05064hep-ph
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储存环实验中的电偶极矩

Electric dipole moment in storage ring experiments

Peter I Porshnev

摘要:

储存环电偶极矩的测量有可能超过中性系统测试的灵敏度。在这种条件下的自旋动力学由Bargmann-Michel-Telegdi方程描述。它可以在几个假设下,其中之一是零赝标双线性的半经典近似。然而,许多有前途的扩展标准模型考虑标量-赝标量耦合假设非零电子赝标量。我们重新推导自旋进动方程的条件下,不假设赝标量为零。它导致一个校正项,可能需要匹配的存储环测量与QFT评估。

英文摘要:

The measurement of electric dipole moment in storage rings can potentially exceed the sensitivity of tests with neutral systems. The spin dynamics under such conditions is described by the Bargmann-Michel-Telegdi equation. It can be derived in the semiclassical approximation under several assumptions one of which is the zero pseudoscalar bilinear. However, many promising extensions to the standard model consider scalar-pseudoscalar couplings which assume nonzero electron pseudoscalar. We re-derive the spin precession equation under conditions that do not assume that pseudoscalar is zero. It leads to a correction term that might be required for matching the storage ring measurements with QFT evaluations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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