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Search for Superlight Gravitinos at HERA |
| Reference |
C Schwanenberger, presented at EPS03, Summer 2003 |
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Conference paper
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| Contact |
Christian Schwanenberger |
| Abstract |
A search for gravitinos produced in positron-proton scattering is presented using the H1 detector at HERA. In models where the gravitino is the lightest supersymmetric particle, an R-parity violating t-channel exchange of a scalar electron can produce a neutralino, which subsequently decays into a photon and a superlight gravitino. The resulting event signature involves an isolated photon and missing transverse energy. No deviation from the Standard Model has been found. Limits on R-parity violating Yukawa couplings have been derived - for the first time at HERA independently of squark masses - for different neutralino and selectron masses in the framework of a Gauge Mediated Supersymmetry Breaking scenario. |
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