The Standard Model instability and the scale of new physics

Details The Standard Model instability and the scale of new physics The Standard Model instability and the scale of new physics

2000-02-18

arxiv.org/abs/hep-ph/0002205v1

Nucl.Phys. B581 (2000) 61-72

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex2e, 12 pages, 3 figures

Scientific paper

10.1016/S0550-3213(00)00199-1

We apply a general formalism for the improved effective potential with several mass scales to compute the scale M of new physics which is needed to stabilize the Standard Model potential in the presence of a light Higgs. We find, by imposing perturbativity of the new physics, that M can be as large as one order of magnitude higher than the instability scale of the Standard Model. This implies that, with the present lower bounds on the Higgs mass, the new physics could easily (but not necessarily) escape detection in the present and future accelerators.

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