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Recent results from the LEP 1.5 run at CERN

The LEP 1 .5 was a three weeks period of data taking which took place in autumn 1995. The data recorded at centre-of-mass energies of 1 30 and 136 GeV, corresponding to a total integrated luminosity of 5.7 pb- 1 , have been analysed by the four LEP experiments. Active searches for new particles and...

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Detalles Bibliográficos
Autor principal: Lançon, E
Lenguaje:eng
Publicado: 1996
Materias:
Acceso en línea:http://cds.cern.ch/record/322332
Descripción
Sumario:The LEP 1 .5 was a three weeks period of data taking which took place in autumn 1995. The data recorded at centre-of-mass energies of 1 30 and 136 GeV, corresponding to a total integrated luminosity of 5.7 pb- 1 , have been analysed by the four LEP experiments. Active searches for new particles and new phenomena have been carried out. With a limited statistic, searches for supersymmetric particles produced in e+ecollisions have been performed. No candidate events were found, allowing limits to be set on the masses and production cross-sections of scalar leptons, scalar tops, charginos and neutralinos. The domains previously excluded at LEPl are substantially extended. Search for pair-produced heavy particles decaying hadronically have also been carried out in the four-jet topology. Preliminary results from the four LEP experiments 1) are presented without any attempt to combine them.