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We demonstrate that Dirac neutrino masses in the experimentally preferredrange are generated within supersymmetric gauge extensions of the StandardModel with a generalized supersymmetry breaking sector. If the usualsuperpotential Yukawa couplings are forbidden by the additional gauge symmetry(such as a U(1)'), effective Dirac mass terms involving the "wrong Higgs" fieldcan arise either at tree level due to hard supersymmetry breaking fermionYukawa couplings, or at one-loop due to nonanalytic or "nonholomorphic" softsupersymmetry breaking trilinear scalar couplings. As both of these operatorsare naturally suppressed in generic models of supersymmetry breaking, theresulting neutrino masses are naturally in the sub-eV range. The neutrinomagnetic and electric dipole moments resulting from the radiative mechanismalso vanish at one-loop order.

Dirac Neutrino Masses from Generalized Supersymmetry Breaking