How light can the lightest neutralino be?

Details How light can the lightest neutralino be? How light can the lightest neutralino be?

2007-07-10

arxiv.org/abs/0707.1425v2

ECONF C0705302:SUS06,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures, Proceedings for the LCWS/ILC 2007 workshop at DESY, Hamburg, Germany; reference added, author name correct

Scientific paper

We show that in the Minimal Supersymmetric Standard Model, the mass of the
lightest neutralino is experimentally unconstrained if the GUT relation between
the gaugino mass parameters M_1 and M_2 is dropped. We discuss what the impact
of light or massless neutralinos would be on their production at LEP, as well
as on electroweak precision data and rare decays.

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