rhic-pv, april 27, 2007 m. rijssenbeek 1 the measurement of w ’s at the cern and fnal hadron...
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RHIC-PV, April 27, 2007 M. Rijssenbeek 3 Non-Hermetic Detectors RHIC detectors are not fully hermetic… electron and muon acceptance of the RHIC detectors varies strongly over the rapidity range… Thus: –missing transverse energy cannot be used to clean up the W signal –Trigger has to rely exclusively on high p T electrons and muons –The backgrounds to the W from Z→e/μ and QCD/fakes may be significant –enough Z -statistics for measurement/tuning of corrections? Detailed simulations will be crucial to determine acceptance corrections, efficiencies, and backgrounds –limited Z acceptance makes tuning of the simulations with Z→ee/μμ more difficult