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

The production cross sections for prompt charmed mesons D0D0\mathrm{D^0}, D+D+\mathrm{D^+}, D∗+D∗+\mathrm{D^{*+}} and D+sDs+\mathrm{D_s^+} were measured at mid-rapidity in proton-proton collisions at a centre-of-mass energy s√=7 TeVs=7 TeV\sqrt{s}=7~{\mathrm {TeV}} with the ALICE detector at the Lar...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Danisch, Meike (Author) , Deisting, Alexander (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Klewin, Sebastian (Author) , Leardini, Lucia (Author) , Mercado Pérez, Jorge (Author) , Oeschler, Helmut (Author) , Ohlson, Alice (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Weiser, Dennis (Author) , Wilkinson, Jeremy (Author) , Windelband, Bernd (Author) , Zimmermann, Alice (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 17 August 2017
In: The European physical journal. C, Particles and fields
Year: 2017, Volume: 77, Issue: 8
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-5090-4
Online Access:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1140/epjc/s10052-017-5090-4
Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-017-5090-4
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Author Notes:ALICE Collaboration*
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Summary:The production cross sections for prompt charmed mesons D0D0\mathrm{D^0}, D+D+\mathrm{D^+}, D∗+D∗+\mathrm{D^{*+}} and D+sDs+\mathrm{D_s^+} were measured at mid-rapidity in proton-proton collisions at a centre-of-mass energy s√=7 TeVs=7 TeV\sqrt{s}=7~{\mathrm {TeV}} with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays D0→K−π+D0→K−π+\mathrm{D}^0 \rightarrow \mathrm{K}^-\pi ^+, D+→K−π+π+D+→K−π+π+\mathrm{D}^+\rightarrow \mathrm{K}^-\pi ^+\pi ^+, D∗+→D0π+D∗+→D0π+\mathrm{D}^{*+} \rightarrow \mathrm{D}^0 \pi ^+, D+s→ϕπ+→K−K+π+Ds+→ϕπ+→K−K+π+\mathrm{D_s^{+}\rightarrow \phi \pi ^+\rightarrow K^-K^+\pi ^+}, and their charge conjugates.With respect to previous measurements in the same rapidity region, the coverage in transverse momentum (pTpTp_\mathrm{T}) is extended and the uncertainties are reduced by a factor of about two. The accuracy on the estimated total cc¯¯cc¯\mathrm{c}{\overline{\mathrm{c}}} production cross section is likewise improved. The measured pTpTp_\mathrm{T}-differential cross sections are compared with the results of three perturbative QCD calculations.
Item Description:ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, P. Glässel, J. Kim, S. Klewin, L. Leardini, J. Mercado Pérez, H. Oeschler, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, S. Schuchmann, J. Stachel, D.F. Weiser, J. Wilkinson, B. Windelband, A. Zimmermann [und weitere]
Gesehen am 28.09.2018
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-017-5090-4

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