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

被引：15

作者：

Arzano, Michele ^{[1
,2
]}

Kowalski-Glikman, Jerzy ^{[3
,4
]}

Wislicki, Wojciech ^{[4
]}

机构：

[1] Univ Napoli Federico II, Dipartimento Fis E Pancini, Via Cinthia, I-80126 Naples, Italy

[2] Univ Napoli Federico II, INFN, Via Cinthia, I-80126 Naples, Italy

[3] Univ Wroclaw, Inst Theoret Phys, Pl M Borna 9, PL-50204 Wroclaw, Poland

[4] Natl Ctr Nucl Res, Ul Pasteura 7, PL-02093 Warsaw, Poland

来源：

PHYSICS LETTERS B | 2019年 / 794卷

关键词：

CPT symmetry; Quantum gravity; kappa-deformation; Particle lifetime; DOUBLY SPECIAL RELATIVITY; QUANTUM-MECHANICS; BARYON ASYMMETRY; C-ASYMMETRY; POINCARE; VIOLATION; INVARIANCE; SPACE;

D O I：

10.1016/j.physletb.2019.05.025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

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 greater than or similar to 4 x 10(14) GeV from measurements at the LHC. Such bound has the potential to reach the value of kappa greater than or similar to 2 x 10(16) GeV using measurements at the planned Future Circular Collider (FCC). (C) 2019 The Author(s). Published by Elsevier B.V.

引用

页码：41 / 44

页数：4

共 35 条

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