Measurement of D-meson production at mid-rapidity in pp collisions at √s=7 TeV
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ISSN: 1434-6044
E-ISSN: 1434-6052
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Abstract
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 pTdifferential
cross sections are compared with the results of
three perturbative QCD calculations.
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Acharya, S., Adamová, D., Aggarwal, M.M. et al. Measurement of D-meson production at mid-rapidity in pp collisions at √s=7 TeV. Eur. Phys. J. C 77, 550 (2017). https://doi.org/10.1140/epjc/s10052-017-5090-4
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© CERN for the benefit of the ALICE collaboration 2017. This article is an open access publication. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.