Search for Four-fermion Nal States in E + E ? Interactions at P S = 130gev ? 136gev
نویسندگان
چکیده
In the data accumulated by DELPHI during November 1995 LEP run at 130 GeV { 140 GeV, events with four fermions in the nal state have been selected. Final states l + l ? q q, q q, l + l ? and l + l ? l + l ? have been analyzed. Three events were found in agreement with expectations from Standard Model four-fermion processes of 2.3 0.14 events and two-fermion background of 0.76 0.15 events.
منابع مشابه
Hep'97 #322 Search for Four-fermion Nal States in E + E ? Interactions at P S = 130gev ? 172gev Preliminary Delphi Collaboration
During LEP running in 1995 and 1996, DELPHI accumulated data at centre-of-mass energies ranging from 130 GeV to 172 GeV. Searches were performed for events containing four nal-state fermions in the l + l ? q q, q q and l + l ? l + l ? channels. The number of events detected was found to be consistent with Standard Model predictions.
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