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Tau Analysis Team to Resume Search for Lepton Flavor Violation

A simulated tau-tau+ event in the BaBar detector. The negative tau decays into a muon (mu-) and a photon (also known as a gamma ray). The green line shows the path of the photon, which leaves no track in the tracking chambers, but deposits its energy in the electromagnetic calorimeter (shown as the green tower). The muon produces hits in the tracking chambers, traverses the calorimeter and leaves its trace in the muon chambers (seen as the purple tower). The positive tau decays into a positron (e+) plus neutrinos, with the latter being undetected and carrying missing energy. (Image courtesy of Swagato Banerjee.)