Anomalous U(1), gaugino condensation and supergravity

Details Anomalous U(1), gaugino condensation and supergravity Anomalous U(1), gaugino condensation and supergravity

1998-08-06

arxiv.org/abs/hep-ph/9808244v2

Phys.Lett. B445 (1998) 82-93

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, revtex, 2 figures, some references added, final version to appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(98)01402-6

The interplay between gaugino condensation and an anomalous Fayet-Iliopoulos term in string theories is not trivial and has important consequences concerning the size and type of the soft SUSY breaking terms. In this paper we examine this issue, generalizing previous work to the supergravity context. This allows, in particular, to properly implement the cancellation of the cosmological constant, which is crucial for a correct treatment of the soft breaking terms. We obtain that the D-term contribution to the soft masses is expected to be larger than the F-term one. Moreover gaugino masses must be much smaller than scalar masses. We illustrate these results with explicit examples. All this has relevant phenomenological consequences, amending previous results in the literature.

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