Constraining neutrinoless double beta decay
  A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific neutrino mass sum-rules (MSR). We show how these theories may constrain the absolute scale of neutrino mass, leading in most of the cases to a lower bound on the neutrinoless double beta decay effective amplitude. 
L. Dorame, D. Meloni, S. Morisi, E. Peinado, J. W. F. Valle
hep-ph hep-ex nucl-ex