Measurement of D-meson production at mid-rapidity in pp collisions at s√=7 TeV
ALICE Collaboration. (2017). Measurement of D-meson production at mid-rapidity in pp collisions at s√=7 TeV. European Physical Journal C, 77 (8), 550. doi:10.1140/epjc/s10052-017-5090-4
Published inEuropean Physical Journal C
Rak, Jan |
© CERN for the benefit of the ALICE collaboration 2017. This is an open access article, distributed under the terms of the Creative Commons Attribution License.
The production cross sections for prompt charmed mesons D0, D+, D∗+ and D+s were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy s√=7 TeV with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays D0→K−π+, D+→K−π+π+, D∗+→D0π+, D+s→ϕπ+→K−K+π+, and their charge conjugates.With respect to previous measurements in the same rapidity region, the coverage in transverse momentum (pT) is extended and the uncertainties are reduced by a factor of about two. The accuracy on the estimated total cc¯¯ production cross section is likewise improved. The measured pT-differential cross sections are compared with the results of three perturbative QCD calculations.