Acta Physica Polonica B

Vol. 33, No. 11, November 2002, page 3875


Supersymmetry at HERA, Results and Prospects

Johannes Haller

The existing results from HERA on searches for supersymmetry are reviewed in this article. Within the framework of the Minimal Supersymmetric Standard Model with Rp conservation, no evidence for the production of supersymmetric particles was found by H1 and ZEUS. HERA is particularly sensitive to the resonant production of squarks in SUSY models with Rp-violation. Searching for the process eq \rightarrow \mathaccent q \rightarrow eq (or e\chi ), in a large number of possible decay modes of the \chi no evidence for \mathaccent q production was found. The limit on the corresponding Yukawa coupling \lambda ' was found to be weakly dependent of the free MSSM parameters and extends to domains not excluded by other direct or indirect searches. Squark masses up to 260 GeV can be ruled out for couplings of electro-magnetic strength. The interpretation of the HERA results in the framework of various constrained supersymmetric models are compared to the results from other experiments. The perspectives of SUSY searches at HERA are reviewed.

PACS numbers: 14.80.Ly


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