At high mass, the observed width of the dimuon invariant mass distribution is dominated by the track curvature resolution, resulting in an
approximately constant resolution in δ1/m_{μμ}. Our search strategy is to construct templates of the
inverse invariant mass distribution for a range of Z' boson pole masses, add the background distributions to the templates, and compare
the templates to the 1/m_{μμ} distribution from data in the search region 1/m_{μμ}
< 10 1/TeV. The simulated templates (including backgrounds) are normalized to the data in the 70 GeV < m_{μμ} < 100 GeV
normalization region. We evaluate the binned Poisson likelihood as a function of signal template integral. The likelihood yields
the bestfit number of signal events observed, as well as the confidence interval.
