Measurement of the inclusive ϕ cross-section in pp collisions at [formula omitted

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doi:10.1016/j.physletb.2011.08.017

Abstract

The cross-section for inclusive ϕ meson production in pp collisions at a centre-of-mass energy of s=7 TeV has been measured with the LHCb detector at the Large Hadron Collider. The differential cross-section is measured as a function of the ϕ transverse momentum pT and rapidity y in the region 0.6<pT<5.0 GeV/c and 2.44<y<4.06. The cross-section for inclusive ϕ production in this kinematic range is σ(pp→ϕX)=1758±19(stat)−14+43(syst)±182(scale) μb, where the first systematic uncertainty depends on the pT and y region and the second is related to the overall scale. Predictions based on the Pythia 6.4 generator underestimate the cross-section.

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