PT Journal
AU Barenboim, G
   Salvado, J
TI Cosmology and CPT violating neutrinos
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2017
BP 766 - 18pp
VL 77
IS 11
DI 10.1140/epjc/s10052-017-5347-y
LA English
AB 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.
ER