In a sample of 200000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons.
Charged particle pair production associated with a lepton pair in Z decays. Indication of an excess in the tau channel
G. Batignani;CIOCCI, MARIA AGNESE;FERRANTE, ISIDORO;FIDECARO, FRANCESCO;MESSINEO, ALBERTO MARIA;TONELLI, GUIDO EMILIO;G. Triggiani;
1991-01-01
Abstract
In a sample of 200000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons.File in questo prodotto:
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