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

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, ALICE Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Article number550
JournalEuropean Physical Journal C
Volume77
Issue number8
DOIs
Publication statusPublished - 2017

Bibliographical note

Export Date: 7 September 2017

Subject classification (UKÄ)

  • Subatomic Physics

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