How light can the lightest neutralino be?

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

2010-11-15

arxiv.org/abs/1011.3450v1

J.Phys.Conf.Ser.259:012058,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 3 figures, to appear in the proceedings of the 16th International Symposium on Particles, Strings and Cosmology (PASC

Scientific paper

10.1088/1742-6596/259/1/012058

In this talk we summarize previous work on mass bounds of a light neutralino in the Minimal Supersymmetric Standard Model. We show that without the GUT relation between the gaugino mass parameters M_1 and M_2, the mass of the lightest neutralino is essentially unconstrained by collider bounds and precision observables. We conclude by considering also the astrophysics and cosmology of a light neutralino.

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