Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-05-10
Phys.Rev. D74 (2006) 075001
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages. Minor modificaitons are made in the text. This version is to appear in Physical Review D
Scientific paper
10.1103/PhysRevD.74.075001
We consider the possibility of neutrino mass generation in a supersymmetric model where lepton number can be violated by odd units. The different patterns of mixing in the quark and lepton sectors are attributed to the persence of right-chiral neutrino superfields which (a) enter into Yukawa couplings via non-renormalizable interaction with hidden sector fields, and (b) can violate lepton number by odd units. Both of these features are shown to be the result of some global quantum number which is violated when SUSY is broken in the hidden sector. It is shown how such a scenario, together with all known R-parity violating effects, can lead to neutrino masses and bilarge mixing via seesaw as well as radiative mechanisms. Some sample values of the various parameters involved, consistent with electroweak symmetry breaking constraints, are presented as illustrations.
Mukhopadhyaya Biswarup
Srikanth Raghavendra
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