Indirect limits on the CPT violating background in the neutrino sector

Details Indirect limits on the CPT violating background in the neutrino sector Indirect limits on the CPT violating background in the neutrino sector

2002-02-18

arxiv.org/abs/hep-ph/0202160v1

Phys.Lett. B534 (2002) 114-119

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures

Scientific paper

10.1016/S0370-2693(02)01692-1

CPT violation in the neutrino sector, suggested as a new way to reconcile different neutrino anomalies, induces at the radiative level observable effects among charged leptons, where high-precision tests of the CPT symmetry are available. We show that, in the models with heavy right-handed Majorana neutrinos, constraints imposed by these experiments require CPT violation in neutrino spectrum be suppressed to a level undetectable for any conceivable neutrino experiment. We find that the CPT violation in the neutrino sector may evade indirect constraints only at the expense of light right-handed neutrinos with small Yukawa couplings to the Standard Model sector or by allowing non-locality well below the electroweak scale.

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