Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-20
Phys.Lett.B445:316-322,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, Latex, to appear in Phys.Lett.B
Scientific paper
10.1016/S0370-2693(98)01512-3
Considering that the soft SUSY breaking scalar masses come from a vacuum expectation value of the D-term for an external gauge multiplet, the renormalization of the scalar masses is related to the gauge anomaly. Then, if the external gauge symmetry is anomaly-free and has no kinetic mixing with the other U(1) gauge symmetries, the scalar masses are non-renormalized at all orders assuming that the gaugino masses are negligibly small compared with the scalar masses. Motivated by this, we construct models where the sfermion masses for the first-two generations are much heavier than the other superparticles in the minimal SUSY standard model in a framework of the anomalous U(1) mediated SUSY breaking. In these models we have to introduce extra chiral multiplets with the masses as large as those for the first-two generation sfermions. We find that phenomenologically desirable patterns for the soft SUSY breaking terms can be obtained in the models.
Hisano Junji
Kurosawa Kiichi
Nomura Yasunori
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