Radiative gauge symmetry breaking in supersymmetric flipped SU(5) |
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Affiliation: | Physics Department, University of Wisconsin, Madison, WI 33706, USA |
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Abstract: | The radiative breaking of the SU(5)×U(1) symmetry in the flipped SU(5) model recently proposed by Antoniadis et al. is studied using renormalization group techniques. It is shown that gaugino masses can only be the dominant source of supersymmetry breaking at the Planck scale if the U(1) gaugino mass M1 is at least 10 times larger than the SU(5) gaugino mass M5. If M1≅M5 at the Planck scale, non-vanishing trilinear soft breaking terms (“A-terms”) are needed already at the Planck scale. In both cases consequences for the sparticle spectrum at the weak scale are discussed. |
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