Measurement of D-meson production at mid-rapidity in pp collisions at √s=7 TeV

Summary, in English

The production cross sections for prompt charmed mesons D 0, D +, D ∗ + and Ds+ were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy s=7TeV with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays D 0→ K -π+, D +→ K -π+π+, D ∗ +→ D 0π+, Ds++→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 c c ¯ production cross section is likewise improved. The measured pT-differential cross sections are compared with the results of three perturbative QCD calculations. © 2017, CERN for the benefit of the ALICE collaboration.

• Author: S Acharya; D. Adamova; M.M Aggarwal; G Aglieri Rinella; M. Agnello; N Agrawal; Peter Christiansen; Martin Ljunggren; Anders Oskarsson; Tuva Richert; David Silvermyr; Evert Stenlund; Vytautas Vislavicius
• Department/s: Particle and nuclear physics
• Publishing year: 2017
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 77
• Issue: 8
• Links: http://dx.doi.org/10.1140/epjc/s10052-017-5090-4
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044