Extension to the Super-Weyl-K{\" a}hler Symmetry in Anomaly Mediation

Details Extension to the Super-Weyl-K{\" a}hler Symmetry in Anomaly Mediation Extension to the Super-Weyl-K{\" a}hler Symmetry in Anomaly Mediation

2003-12-27

arxiv.org/abs/hep-ph/0312358v4

Phys.Lett. B586 (2004) 404-410

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures

Scientific paper

10.1016/j.physletb.2004.02.060

Anomaly mediation mechanism of supersymmetry breaking is known to have an unsatisfactory aspect which is often referred to as the tachyonic slepton problem. A possible way out of this difficulty is investigated by considering the mediation mechanism not only of the super-Weyl but of K{\" a}hler part of anomaly. A new formula for the scalar mass squared is presented by including the effect of the K{\" a}hler anomaly. On the basis of the new formulae, the gauge non-singlet scalar mass squared is shown to be positive provided that the superpotential in the hidden sector satisfies a certain condition. The gauge singlet scalar mass squared may also be positive if we consider the threshold correction.

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