Inverse seesaw in supersymmetry

Nov, 2010
10 pages
Published in:
  • Phys.Lett.B 701 (2011) 107-110
e-Print:
Report number:
  • IPMU10-0146

Citations per year

20112013201520172017103
Abstract: (Elsevier)
We study a mechanism where tiny neutrino masses arise only from radiative contribution in a supersymmetric model. Without tuning the Higgs vev or Yukawa coupling, the tree-level light neutrino mass is rotated away by introducing a new singlet neutrino sL that forms a Dirac mass term with the right-handed neutrino nR in each generation. Even with the U(1)Lep lepton number violation term as non-zero right-handed Majorana neutrino mass MRnRc¯nR , the lightest neutrino remains massless at tree level due to an approximate symmetry. Consequently, tiny neutrino masses then only arise from radiative contributions and the right-handed neutrino Majorana mass MR can be at O(keV) to give rise to the correct light neutrino mass at O(eV) . Supersymmetry ensures that the Majorana neutrino masses MRnRc¯nR and MR⁎sLc¯sL are not generated simultaneously.
  • Neutrino mass
  • Radiative generation
  • neutrino: mass
  • neutrino: right-handed
  • neutrino: Majorana
  • neutrino: Dirac
  • neutrino: left-handed
  • supersymmetry
  • superpotential
  • holomorphic