Dataset

GSI-2023-00162

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Prompt D$^{0}$, D$^{+}$, and D$^{*+}$ production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV

ALICE Collaboration (Corresponding author)

2022

Please use a persistent id in citations: doi:10.17182/HEPDATA.127979

Abstract: CERN LHC. The production of prompt D$^{0}$, D$^{+}$, and D*$^{+}$ mesons was measured at midrapidity ($|y|<0.5$) in Pb-Pb collisions at the centre-of-mass energy per nucleon--nucleon pair $\sqrt{s_\mathrm{NN}}=5.02$ TeV with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decay channels and their production yields were measured in central (0-10%) and semicentral (30-50%) collisions. The measurement was performed up to a transverse momentum ($p_\mathrm{T}$) of 36 or 50 GeV/$c$ depending on the D meson species and the centrality interval. For the first time in Pb-Pb collisions at the LHC, the yield of D$^{0}$ mesons was measured down to $p_\mathrm{T} =$ 0, which allowed a model-independent determination of the $p_\mathrm{T}$-integrated yield per unit of rapidity (d$N$/d$y$). A maximum suppression by a factor 5 and 2.5 was observed with the nuclear modification factor ($R_{\mathrm{AA}}$) of prompt D mesons at $p_\mathrm{T} =$ 6-8 GeV/$c$ for the 0-10% and 30-50% centrality classes, respectively. The D-meson $R_{\mathrm{AA}}$ is compared with that of charged pions, charged hadrons, and J/$\psi$ mesons as well as with theoretical predictions. The analysis of the agreement between the measured $R_{\mathrm{AA}}$, elliptic ($v_{2}$) and triangular ($v_{3}$) flow, and the model predictions allowed us to constrain the charm spatial diffusion coefficient $D_{s}$. Furthermore the comparison of $R_{\mathrm{AA}}$ and $v_{2}$ with different implementations of the same models provides an important insight into the role of radiative energy loss as well as charm quark recombination in the hadronisation mechanisms.

Note: Journal Article GSI record: GSI-2023-00112

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Contributing Institute(s):

1. ALICE (ALI)
2. Detektorlabor (DTL)
3. IT (CIT)
4. ExtreMe Matter Institute, EMMI (EXM)
5. Collaboration CERN: ALICE (ALICE@CERN)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. HGS-HIRe - HGS-HIRe for FAIR (HGS-HIRe) (HGS-HIRe)
3. SUC-GSI-Heidelberg - Strategic university cooperation GSI-U Heidelberg (SUC-GSI-HE) (SUC-GSI-HE)
4. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
5. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)

Experiment(s):

1. LHC: ALICE

Appears in the scientific report 2022

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Acharya, S. ; Adamova, D. ; Adler, A. ; et al
Prompt D$^{0}$, D$^{+}$, and D$^{*+}$ production in Pb–Pb collisions at $ \sqrt{s_{\mathrm{NN}}} $ = 5.02 TeV
Journal of high energy physics 01(1), 174 (2022) [10.1007/JHEP01(2022)174]2022   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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