期刊
EUROPEAN PHYSICAL JOURNAL C
卷 32, 期 4, 页码 453-473出版社
SPRINGER
DOI: 10.1140/epjc/s2003-01466-y
关键词
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In total 1317 di-lepton events with significant missing transverse momentum were identified in a total data sample of 680 pb(-1) collected at e (+) e(-) centre-of-mass energies ranging from 183 GeV to 209 GeV. The number of di-lepton events, the dependence on centre-of-mass energy, and the event properties are consistent with expectations from Standard Model processes, predominantly W (+) W- production with both W bosons decaying leptonically. This topology is also an experimental signature for the pair production of new particles that decay to a charged lepton accompanied by one or more invisible particles. No evidence for new phenomena is apparent. Upper limits are presented on the production cross-section multiplied by the relevant branching ratio squared for sleptons, leptonically decaying charginos and charged Higgs bosons. Mass limits are also given.
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