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High Energy Physics - Experiment, hep-ex
Abstract:
The cross-section for inclusive phi meson production in pp collisions at a
centre-of-mass energy of sqrt(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 phi transverse momentum p_T and rapidity y in the
region 0.6 < p_T < 5.0 GeV/c and 2.44 < y < 4.06. The cross-section for
inclusive phi production in this kinematic range is sigma(pp -> phi X) = 1758
pm 19(stat) ^{+43}_{-14}(syst) pm 182(scale) microbarn, where the first
systematic uncertainty depends on the p_T and y region and the second is
related to the overall scale. Predictions based on the Pythia 6.4 generator
underestimate the cross-section.