A Measurement of Neutralino Mass at the LHC in Light Gravitino Scenarios

Details A Measurement of Neutralino Mass at the LHC in Light Gravitino Scenarios A Measurement of Neutralino Mass at the LHC in Light Gravitino Scenarios

2008-05-16

arxiv.org/abs/0805.2502v1

Phys.Lett.B666:57-61,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 6 figures

Scientific paper

10.1016/j.physletb.2008.07.010

We consider supersymmetric (SUSY) models in which a very light gravitino is the lightest SUSY particle. Assuming that a neutralino is the next-to-lightest SUSY particle, we present a measurement of the neutralino mass at the LHC in two photons + missing energy events, which is based on the MT2 method. It is a direct measurement of the neutralino mass itself, independent of other SUSY particle masses and patterns of cascade decays before the neutralino is produced.

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