Double beta decay in left-right symmetric models

https://doi.org/10.1016/0370-2693(96)00185-2Get rights and content

Abstract

Left-right symmetric models provide a natural framework for neutrinoless double beta (0νββ) decay. In the analysis of 0νββ decay in left-right symmetric models, however, it is usually assumed that all neutrinos are light. On the other hand, heavy right-handed neutrinos appear quite naturally in left-right symmetric models and should therefore not be neglected. Assuming the existence of at least one right-handed heavy neutrino, absence of 0νββ decay of 76Ge currently provides the following limits on the mass and mixing angle of right-handed W-bosons: mWR ≥ 1.1 TeV and tan(ζ) ≤ 4.7 × 10−3 for a particular value of the effective right-handed neutrino mass, 〈mN(V)〉 = 1 TeV, and in the limit of infinitely massive doubly charged Higgs (Δ−−). The effects of the inclusion of the Higgs triplet on 0νββ decay are also discussed.

References (22)

  • M. Doi et al.

    Progr. Theor. Phys.

    (1993)
  • A. Balysh

    Phys. Lett. B

    (1995)
    H.V. Klapdor-Kleingrothaus
  • R.N. Mohapatra et al.

    Phys. Rev. Lett.

    (1981)
  • J. Schechter et al.

    Phys. Rev. D

    (1982)
  • L. Wolfenstein

    Phys. Rev. D

    (1982)
  • W. Haxton et al.

    Phys. Rev. D

    (1982)
  • G. Bélanger et al.
  • J.C. Pati et al.

    Phys. Rev. D

    (1974)
    R.N. Mohapatra et al.

    Phys. Rev. D

    (1975)
    R.N. Mohapatra et al.

    Phys. Rev. D

    (1975)
    G. Senjanovic et al.

    Phys. Rev. D

    (1975)
  • K. Grotz et al.

    The Weak Interactions in Nuclear, Particle and Astrophysics

    (1990)
  • M. Doi et al.

    Progr. Theor. Phys. Suppl.

    (1985)
  • M. Gell-Mann et al.R.N. Mohapatra et al.

    Phys. Rev. D

    (1981)
  • Cited by (0)

    View full text