Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-03-28
Nucl.Phys.B718:113-133,2005
Physics
High Energy Physics
High Energy Physics - Theory
minor corrections, references added, version accepted in NPB
Scientific paper
10.1016/j.nuclphysb.2005.04.032
We examine the structure of soft supersymmetry breaking terms in KKLT models of flux compactification with low energy supersymmetry. Moduli are stabilized by fluxes and nonperturbative dynamics while a de Sitter vacuum is obtained by adding supersymmetry breaking anti-branes. We discuss the characteristic pattern of mass scales in such a set-up as well as some features of 4D N=1 supergravity breakdown by anti-branes. Anomaly mediation is found to always give an important contribution and one can easily arrange for flavor-independent soft terms. In its most attractive realization, the modulus mediation is comparable to the anomaly mediation, yielding a quite distinctive sparticle spectrum. In addition, the axion component of the modulus/dilaton superfield dynamically cancels the relative CP phase between the contributions of anomaly and modulus mediation, thereby avoiding dangerous SUSY CP violation.
Choi Kiwoon
Falkowski Adam
Nilles Hans Peter
Olechowski Marek
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