Short note
Test of special relativity and equivalence principle from neutrinoless double beta decay
H.V. Klapdor-Kleingrothaus1 - H. Päs1 - U. Sarkar2,3
1 Max-Planck-Institut für Kernphysik P.O. Box 103980, D-69029 Heidelberg, Germany
2 DESY, Notkestrasse 85, D-22607 Hamburg, Germany
3 Physical Research Laboratory, Ahmedabad, 380 009, India
Received: 19 January 1999 Communicated by B. Povh
Abstract
We generalize the formalism for testing Lorentz invariance and the weak equivalence
principle in the neutrino sector. While neutrino oscillation bounds constrain the region of large
mixing of the the weak and gravitational eigenstates, we obtain new constraints on violations of
Lorentz invariance and the equivalence principle from neutrinoless double beta decay.
These bounds apply even in the case of no mixing and thus probe a totally unconstrained region in
the parameter space.
Copyright Springer-Verlag
