Cross Section Measurements of High-$p_T$ Dilepton Final-State Processes Using a Global Fitting Method

Abstract

We present a new method for studying high-$p_T$ dilepton events ($e^{\pm }{e}^{\mp }$, ${\mu }^{\pm }{\mu }^{\mp }$, $e^{\pm }{\mu }^{\mp }$) and simultaneously extracting the production cross sections of $p\bar{p}\to t\bar{t}$, $p\bar{p}\to W^{+}{W}^{-}$, and $p\bar{p} \to \ztt$ at a center-of-mass energy of $\sqrt{s}=1.96$ TeV. We perform a likelihood fit to the dilepton data in a parameter space defined by the missing transverse energy and the number of jets in the event. Our results, which use $360\mathrm{p}{\mathrm{b}}^{-1}$ of data recorded with the CDF II detector at the Fermilab Tevatron Collider, are $\sigma (t\bar{t})=8.5_{-2.2}^{+2.7}$ pb, $\sigma (W^{+}{W}^{-})=16.3_{-4.4}^{+5.2}$ pb, and $σ(\ztt) =291^{+50}_{-46}$ pb.

20 pages, 2 figures, to be submitted to PRD-RC

References in corpus (1)

• Search for a Neutral Higgs Boson Decaying to a W Boson Pair in ppbar Collisions at sqrt{s} = 1.96 TeV

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