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Brahmachari, Biswajoy; Ma, Ernest; Sarkar, Utpal
Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)2001
Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)2001
AbstractAbstract
[en] Adjoint supermultiplets (1,3,0) and (8,1,0) modify the evolution of gauge couplings. If the unification of gauge couplings occurs at the string scale, their masses are fixed at around 1013 GeV. We show how neutrino masses arise in this unified model which naturally explain the present atmospheric and solar neutrino data. The out-of-equilibrium decay of the superfield (1,3,0) at 1013 GeV may also lead to a lepton asymmetry which then gets converted into the present observed baryon asymmetry of the Universe. (author)
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May 2001; 8 p; SINP/TNP--01-11; UCRHEP--T307; GRANT DE-FG03-94ER40837; Also available at: http://www.ictp.trieste.it; 12 refs, 2 figs, 1 tab
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