Inverse seesaw in supersymmetry
Nov, 201010 pages
Published in:
- Phys.Lett.B 701 (2011) 107-110
e-Print:
- 1011.3621 [hep-ph]
Report number:
- IPMU10-0146
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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
References(15)
Figures(3)