1998/03/31 by G. Lazarides, Qaisar Shafi, Q. Shafi · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.58.071702
published as Phys.Rev.D58:071702,1998 · 12 pages (including one postscript figure), Revtex, minor corrections made
openalex publication_date 1998/09/09 · arxiv created 1998/10/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The supersymmetric sector of the minimal supersymmetric standard model possesses a U(1) R symmetry which contains Z2 matter parity. Nonzero neutrino masses, consistent with a ``redefined'' R symmetry, are possible through the seesaw mechanism and/or a pair of superheavy (mass M) SU(2)L triplets with a VEV\ensuremath∼MW2/M. If this R symmetry is respected by the higher order terms, then baryon number conservation follows as an immediate consequence. In the presence of right-handed neutrinos, the observed baryon asymmetry of the universe arises via leptogenesis. An interplay of R and Peccei-Quinn symmetry simultaneously resolves the strong CP and \ensuremathμ problems.