Vacuum Stability in Split Susy and Little Higgs Models

Details Vacuum Stability in Split Susy and Little Higgs Models Vacuum Stability in Split Susy and Little Higgs Models

2004-12-17

arxiv.org/abs/hep-ph/0412255v2

Int.J.Mod.Phys.A21:2431-2445,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex 22 pages, 3 figures. Added discussion, published version

Scientific paper

10.1142/S0217751X06029521

We study the stability of the effective higgs potential in the split supersymmetry and Little Higgs models. In particular, we study the effects of higher dimensional operators in the effective potential on the higgs mass predictions. We find that the size and sign of the higher dimensional operators can significantly change the higgs mass required to maintain vacuum stability in Split Susy models. In the Little Higgs models the effects of higher dimensional operators can be large because of a relatively lower cut-off scale. Working with a specific model we find that a contribution from the higher dimensional operator with coefficient of O(1) can destabilize the vacuum.

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