Electroweak Precision Data, Light Sleptons and Stability of the SUSY Scalar Potential

Details Electroweak Precision Data, Light Sleptons and Stability of the SUSY Scalar Potential Electroweak Precision Data, Light Sleptons and Stability of the SUSY Scalar Potential

2001-11-19

arxiv.org/abs/hep-ph/0111222v1

Phys.Lett. B526 (2002) 111-120

Physics

High Energy Physics

High Energy Physics - Phenomenology

Plain Latex, 17 pages, 5 postscript figure

Scientific paper

10.1016/S0370-2693(01)01490-3

The light slepton-sneutrino scenario with non-universal scalar masses at the GUT scale is preferred by the electroweak precision data. Though a universal soft breaking mass at or below the Plank scale can produce the required non-universality at the GUT scale through running, such models are in conflict with the stability of the electroweak symmetry breaking vacuum. If the supergravity motivated idea of a common scalar mass at some high scale along with light sleptons is supported by future experiments that may indicate that we are living in a false vacuum. In contrast SO(10) D-terms, which may arise if this GUT group breaks down directly to the Standard Model, can lead to this spectrum with many striking phenomenological predictions, without jeopardizing vacuum stability.

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