10-17 July 2019
Europe/Brussels timezone

Bounds on Planck-scale deformation of CPT from lifetimes and interference

12 Jul 2019, 11:50
Campus Ledeganck - Aud. 2 (Ghent)

Campus Ledeganck - Aud. 2


Parallel talk Astroparticle Physics and Gravitational Waves Cosmology


Prof. Wojciech Wislicki (National Centre for Nuclear Research)


Deformed relativistic kinematics, expected to emerge in a flat-spacetime limit of quantum gravity, predicts the Planck-scale violation of discrete symmeries, in particular the CPT symmetry.
Momentum-dependent deformations of the action of CPT are derived from the kappa-deformed Poincare algebra.
In this approach, deformation of CPT symmetry leads to a subtle violation of
Lorentz symmetry.
This entails some small but measurable phenomenological consequences, as corrections to characteristics of time evolution: particle lifetimes or oscillations in two-particle states at high energy.
We argue that using current experimental precisions on the muon lifetime or quark flavour oscillations in systems of neutral mesons we can bound kappa>10^{14} GeV at LHC energy and move this limit to 10^{16} GeV at Future Circular Collider.

Primary author

Prof. Wojciech Wislicki (National Centre for Nuclear Research)

Presentation Materials