6533b821fe1ef96bd127b820
RESEARCH PRODUCT
Cosmology and CPT violating neutrinos
Gabriela BarenboimJordi Salvadosubject
Particle physicsPhysics::General PhysicsPhysics and Astronomy (miscellaneous)Physics beyond the Standard ModelFOS: Physical sciencesElementary particlelcsh:Astrophysics7. Clean energy01 natural sciencesCosmologyGravitationsymbols.namesakeHigh Energy Physics - Phenomenology (hep-ph)0103 physical scienceslcsh:QB460-466lcsh:Nuclear and particle physics. Atomic energy. RadioactivityPlanck010306 general physics010303 astronomy & astrophysicsEngineering (miscellaneous)PhysicsHigh Energy Physics::PhenomenologyCharge (physics)Symmetry (physics)High Energy Physics - Phenomenologysymbolslcsh:QC770-798High Energy Physics::ExperimentNeutrinodescription
The combination Charge Conjugation-Parity-Time Reversal(CPT) is a fundamental symmetry in our current understanding of nature. As such, testing CPT violation is a strongly motivated path to explore new physics. In this paper we study CPT violation in the neutrino sector, giving for the first time a bound, for a fundamental particle, in the CPT violating particle-antiparticle gravitational mass difference. We argue that cosmology is nowadays the only data sensitive to CPT violation for the neutrino-antineutrino mass splitting and we use the latest data release from Planck combined with the current Baryonic-Acoustic-Oscillation measurement to perform a full cosmological analysis. To show the potential of the future experiments we also show the results for Euclid, a next generation large scale structure experiment.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-01 |