high-pT dilepton final-state processes using a global fittingmethod

We present a new method for studying high-pT dilepton events (e±e∓, μ±μ∓, e±μ∓) and simultaneously extracting the production cross sections of pp→tt, pp→W+W−, and pp→Z0→τ+τ− at a center-of-mass energy of 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 pb−1 of data recorded with the CDF II detector at the Fermilab Tevatron Collider, are σ(tt)=8.5+2.7−2.2 pb, σ(W+W−)=16.3+5.2−4.4 pb, and σ(Z0→τ+τ−)=291+50−46 pb. CDF Collaboration, CAMPANELLI, Mario (Collab.), et al. Cross section measurements of high-p T dilepton final-state processes using a global fitting method. Physical Review. D, 2008, vol. 78, no. 01, p. 012003 DOI : 10.1103/PhysRevD.78.012003