Testing Gauge-Gravitino Coupling in Gauge-Mediated Supersymmetry Breaking Through Single Photon Events
Amitava Datta, Aseshkrishna Datta, Anirban Kundu, Biswarup Mukhopadhyaya, Sourov Roy
Abstract
We show that the process e+e- γ+ missing energy, arising from the pair production of neutralinos, can probe the γ-γ- as well as the Z- Z- couplings in Gauge Mediated Supersymmetry Breaking models. This enables one to study the mutual relationship of the Goldstino couplings of the different gauginos, a feature whose testability has not been emphasized so far. The Standard Model backgrounds get suppresed with the use of a right polarized electron beam. The energy and angular distribution of the emitted photon can distinguish such models from the minimal supersymmetric theory and its variants.
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