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Search for Z0 decays to two leptons and a charged particle - anti-particle pair

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Search for Z0 decays to two leptons and a charged particle - anti-particle pair

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DELPHI Collaboration; Allen, Paul; Alted Abad, Francesc Josep; Chrin, J. T. M.; Castillo Giménez, María Victoria; Cortina Gil, Eduardo; Ferrer Soria, Antonio; Fuster Verdú, Juan A.; García García, Carmen; Gómez Cadenas, Juan José; Hernández Rey, Juan José; Higón Rodríguez, Emilio; Fez Laso, M. D. M. de; Lacasta Llácer, Carlos; Lozano Bahilo, José Julio; Martí García, Salvador; Salt Cairols, José; Valls Ferrer, Juan Antonio; Zúñiga Román, Juan

Aquest document és un/a article, creat/da en: 1993

Based on a sample equivalent to 365000 hadronic Z0 decays, the search in DELPHI data for pairs of leptons accompanied by a pair of charged particles is described. A total of 11 events were found in the electron channel, 9 in the muon channel and 7 in the tau channel. Results on lepton pairs with a radiated photon are also presented. The data from all channels are compatible with the expectations from standard processes. However, one event was found in the tau channel with an unusually high mass of the charged particle pair.

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