FIZIKA B 4 (1995) 3, 273-286

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STUDY OF H® ZZ ® 4l± WITH A FULL GEANT SIMULATION OF CMS DETECTOR

DEANA BOMEŠTARa, DANIEL DENEGRIb, RITVA KINNUNENc and ALEXANDRE NIKITENKOd
aInstitute Ruđer Bošković, Zagreb, Croatia
bDAPNIA/ SPP,CEN Saclay, France
cSEFT, University of Helsinki, Finland
dITEP, Moscow, Russia

Dedicated to Professor Mladen Paić on the occasion of his 90th birthday

Received 11 July 1995

We 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
PACS 06.90.+v
Copyright by The Croatian Physical Society
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