Inclusiveχcandb-quark production inp¯pcollisions at √s=1.8 TeV

Abstract
We report the full reconstruction of χc mesons through the decay chain χcJ/ψ γ, J/ψ→μ+ μ, using data obtained at the Collider Detector at Fermilab in 2.6±0.2 pb1 of p¯p collisions at √s =1.8 TeV. This exclusive χc sample is used to measure the χc-meson production cross section times branching fractions. We obtain σ×B=3.2±0.4(stat)1.1+1.2(syst) nb for χc mesons decaying to J/ψ with pT>6.0 GeV/c and pseudorapidity ‖η‖8.5 GeV/c and ‖yb‖<1.

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