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arXiv 1904.06754hep-phgr-qchep-th
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从μ子寿命看CPT的普朗克尺度形变

A bound on Planck-scale deformations of CPT from muon lifetime

Michele Arzano, Jerzy Kowalski-Glikman, Wojciech Wislicki

摘要:

我们表明,变形相对论运动学预计将出现在量子引力的平坦时空极限中,预测粒子及其反粒子的不同寿命。这种现象是离散对称性作用的普朗克尺度修正的结果。特别是,我们专注于变形的CPT行动来自卡帕-庞加莱代数,普朗克尺度变形的相对论对称性的研究最多的例子。通过观察μ子和反μ子的寿命,我们能够从大型强子对撞机的测量结果中推导出变形参数kappa > 4 × 10^14 GeV的实验界限。利用计划中的未来圆形对撞机(FCC)的测量,这种束缚有可能达到kappa > 2x10^16 GeV的值。

英文摘要:

We show that deformed relativistic kinematics, expected to emerge in a flat-spacetime limit of quantum gravity, predicts different lifetimes for particles and their antiparticles. This phenomenon is a consequence of Planck-scale modifications of the action of discrete symmetries. In particular we focus on deformations of the action of CPT derived from the kappa-Poincare algebra, the most studied example of Planck-scale deformation of relativistic symmetries. Looking at lifetimes of muons and anti-muons we are able to derive an experimental bound on the deformation parameter of kappa > 4x10^14 GeV from measurements at the LHC. Such bound has the potential to reach the value of kappa > 2x10^16 GeV using measurements at the planned Future Circular Collider (FCC).

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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