No-scale supergravity confronts LEP diphoton events
Lopez, J. · Nanopoulos, D. · Zichichi, A.
Original · EN
We examine the possibility that some anomalous acoplanar diphoton events observed at LEP may be consistent with the predictions of our previously proposed one-parameter no-scale supergravity model with a light gravitino, via the process e+e- -> chi chi -> gamma gamma+Eₘiss. We find that one such event may indeed be consistent with the model predictions for mchi ≈ (60-70) GeV. This region of parameter space is also consistent with the selectron and chargino interpretations of the CDF ee gamma gamma + Eₜ,miss event.
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