Abstract
Measurements of hadron production ratios in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of are presented. We study the ratios of strange meson to light meson production and baryon to light meson production as a function of the charmed hadron-muon pair transverse momentum and the hadron pseudorapidity , for between 0 and 14 GeV and between 2 and 5. We find that is consistent with being independent of and , and we determine , where the first error is statistical and the second systematic. The corresponding ratio is found to be dependent upon the transverse momentum of the charmed hadron-muon pair, , where Br reflects an absolute scale uncertainty due to the poorly known branching fraction . We extract the ratio of strange meson to light neutral meson production by averaging the result reported here with two previous measurements derived from the relative abundances of to and . We obtain .
5 More- Received 9 November 2011
DOI:https://doi.org/10.1103/PhysRevD.85.032008
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© 2012 CERN, for the LHCb Collaboration