A model of CPT violation for neutrinos

Details A model of CPT violation for neutrinos A model of CPT violation for neutrinos

2002-10-29

arxiv.org/abs/hep-ph/0210411v1

Phys.Lett. B554 (2003) 73-80

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages

Scientific paper

10.1016/S0370-2693(02)03262-8

Any local relativistic quantum field theory of Dirac-Weyl fermions conserves CPT. Here we examine whether a simple nonlocal field theory can violate CPT. We construct a new relativistic field theory of fermions, which we call ``homeotic'', which is nonlocal but causal and Lorentz invariant. The free homeotic theory is in fact equivalent to free Dirac theory. We show that a homeotic theory with a suitable nonlocal four-fermion interaction is causal and as a result has a well-defined perturbative S-matrix. By coupling a right-handed homeotic fermion to a left-handed Dirac-Weyl fermion, we obtain a causal theory of CPT-violating neutrino oscillations.

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