Impact of the alignment of the EC muon spectrometer to SM H&8594; 4 &956; and MSSM H/A&8594; 2 &956; reconstruction and detection 002

The impact of the global Muon Spectrometer end-cap misalignment (rotation) relative to the barrel, on the reconstruction of the SM H→ 4 μ and MSSM H/A→ 2 μ has been extensively studied. A 1mrad EC rotation, with respect to the axis perpendicular to the beams, reduces the SM Higgs signal by ~ 2% and the MMSM H/A signal by less than 5%, respectively. A study of a specific sample of Z events with at least one muon in the misaligned region can reveal the problem, in order to be corrected off-line.