Planck-scale deformation of CPT and particle lifetimes

Abstract

We carry out a systematic study of the bounds that can be set on Planck-scale deformations of relativistic symmetries and CPT from precision measurements of particle and antiparticle lifetimes. Elaborating on our earlier work [1] we discuss a new form of departure from CPT invariance linked to the possibility of a non-trivial geometry of four-momentum and its consequences for the particle and antiparticle mass-shells and decay probabilities. Our main result is a collection of experimental bounds that can be obtained for the deformation parameter of the theoretical model under consideration based on current data and sensitivities of planned experiments at high energies.

arXiv comment7 pages, 1 table

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• LHCb Detector Performance
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• Doubly Special Relativity theories as different bases of $\kappa$--Poincaré algebra
• Quantum $\kappa$-Poincare in Any Dimensions
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Cited by in corpus (5)

• Reaching the Planck scale with muon lifetime measurements
• $\kappa$-deformed complex fields and discrete symmetries
• Geometrizing the Klein-Gordon and Dirac equations in Doubly Special Relativity
• Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review
• Two-body decays in deformed relativity