Measurement of D-meson production at mid-rapidity in pp collisions at ${\sqrt{s}=7}$  TeV

Acharya, Shreyasi; Adamova, Dagmar; Aggarwal, Madan Mohan; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Ahmad, Nazeer; Ahn, Sang Un; Aiola, Salvatore

doi:10.1140/epjc/s10052-017-5090-4

Measurement of D-meson production at mid-rapidity in pp collisions at ${\sqrt{s}=7}$ TeV

ALICE

Collaboration

Feb 2, 2017

28 pages

Published in:

Eur.Phys.J.C 77 (2017) 8, 550

Published: Aug 17, 2017

e-Print:

1702.00766 [hep-ex]

DOI:

10.1140/epjc/s10052-017-5090-4

Report number:

CERN-EP-2017-020

Experiments:

CERN-LHC-ALICE

View in:

datasets

reference search166 citations

Citations per year

Abstract: (Springer)

The production cross sections for prompt charmed mesons

\mathrm{D^0}

,

\mathrm{D^+}

,

\mathrm{D^{*+}}

and

\mathrm{D_s^+}

were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy

\sqrt{s}=7~{\mathrm {TeV}}

with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays

\mathrm{D}^0 \rightarrow \mathrm{K}^-\pi ^+

,

\mathrm{D}^+\rightarrow \mathrm{K}^-\pi ^+\pi ^+

,

\mathrm{D}^{*+} \rightarrow \mathrm{D}^0 \pi ^+

,

\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 (

p_\mathrm{T}

) is extended and the uncertainties are reduced by a factor of about two. The accuracy on the estimated total

\mathrm{c}{\overline{\mathrm{c}}}

production cross section is likewise improved. The measured

p_\mathrm{T}

-differential cross sections are compared with the results of three perturbative QCD calculations.

Note:

28 pages, 9 captioned figures, 4 tables, authors from page 23, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3365

p p: scattering
p p: colliding beams
D0: hadroproduction
D+: hadroproduction
D/s+: hadroproduction
D*(2010)+: hadroproduction
D0: hadronic decay
D+: hadronic decay
D/s+: hadronic decay
D*(2010)+: hadronic decay

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Figures(16)

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Measurement of D-meson production at mid-rapidity in pp collisions at s=7{\sqrt{s}=7}s​=7 TeV

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Measurement of D-meson production at mid-rapidity in pp collisions at ${\sqrt{s}=7}$ TeV