Double beta decay, supersymmetry and lepton number violation

M. Hirsch, H. V. Klapdor-Kleingrothaus, S. G. Kovalenko

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Neutrinoless double beta (0vββ) decay violates lepton number and is therefore a sensitive probe of physics beyond the standard model. Limits from 0vββ decay are usually expressed in terms of limits on the Majorana neutrino mass, the best experiment now giving (mv) ≤ 0.5 eV. However, in supersymmetric extensions of the SM there can be other sources of lepton number violation than the neutrino mass, the best-known example being RP-violation. 0vββ decay provides the most stringent limits on certain Rp MSSM parameters, ruling out first generation squarks as a possible explanation of the recent HERA high Q2-events. Furthermore, current low-energy constraints on and future collider phenomenology of (B - L) violating sneutrino masses are discussed. As has been proven recently such a (B - L) violating sneutrino mass is a necessary ingredient of any supersymmetric model with finite Majorana neutrino masses.

Original languageEnglish
Pages (from-to)224-231
Number of pages8
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3 PROC.SUPPL.
Publication statusPublished - Mar 1998
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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