Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-04-27
Phys.Lett. B641 (2006) 310-317
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 8 figures. Some comments and four new figures have been added
Scientific paper
10.1016/j.physletb.2006.09.011
We investigate effects of D-term contributions to the mixed modulus-anomaly mediated supersymmetry breaking scenario. In the original scenario, the tachyonic slepton problem in the pure anomaly mediated supersymmetry breaking is cured by modulus contributions. We generalize the scenario so as to include contributions from the D-terms of U(1)_Y and the gauged U(1)_{B-L} which is motivated in a grand unified theory based on a higher rank gauge group such as SO(10). As a consequence of additional $D$-term contributions to scalar masses, we obtain various soft supersymmetry breaking mass spectra, which are different from those obtained in the conventional mixed modulus-anomaly mediated supersymmetry breaking. Especially, we find that the lightest superpartner (LSP) neutralinos can be various types, such as Higgsino-like, wino-like and bino-like degenerating with the next LSP sfermions.
Fukuyama Takeshi
Kikuchi Tatsuru
Okada Nobuchika
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