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FIZIKA B 4 (1995) 3, 273-286 STUDY OF H® ZZ ® 4l± WITH A FULL GEANT SIMULATION OF CMS DETECTORDEANA BOMEŠTARa, DANIEL DENEGRIb, RITVA KINNUNENc
and ALEXANDRE NIKITENKOd Dedicated to Professor Mladen Paić on the occasion of his 90th birthdayReceived 11 July 1995We study the detection of H ® ZZ ®4l± in the CMS detector at the nominal LHC energy Ös = 14 TeV and the possibility for an early detection at a reduced energy Ös = 10 TeV. A systematic study of the multi-lepton mass resolution is performed, including effects of internal and external radiation through detailed GEANT simulations. At Ös = 14 TeV, an integrated luminosity of 104 pb-1 allows exploration at a ł 5s significance level a mass range from mH » 2mZ up to mH » 400 GeV. For 105 pb-1, the mass reach is about 650 GeV. At Ös = 10 TeV, an integrated luminosity of 104 pb- 1 does not provide a 5s significance level for any value of Higgs mass, and 2×104 pb-1 alows one to explore a mass range from mH » 2mZ to » 350 GeV at ł 5s level. UDC 539.12
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