arXiv : Open heavy-flavour production from small to large collision systems with ALICE at the LHC

Vermunt, Luuk

doi:10.22323/1.390.0571

Article
Report number	arXiv:2011.06291
Title	Open heavy-flavour production from small to large collision systems with ALICE at the LHC
Author(s)	Vermunt, Luuk (Utrecht U.)
Collaboration	ALICE Collaboration
Publication	SISSA, 2021
Imprint	2020-11-12
Number of pages	6
Note	Proceedings of ICHEP Conference 2020. 6 pages, 4 figures
In:	PoS ICHEP2020 (2021) 571
In:	40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.571
DOI	10.22323/1.390.0571
Subject category	nucl-ex ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ALICE
Abstract	Heavy quarks are effective probes to study the properties of the quark-gluon plasma (QGP) produced in ultra-relativistic heavy-ion collisions. In this contribution, the latest results on open heavy-flavour production in pp and Pb-Pb collisions measured by the ALICE Collaboration will be discussed. Measurements of open heavy-flavour production in Pb-Pb collisions allow for testing the mechanisms of heavy-quark transport and energy loss in the medium. In addition, measurements of the elliptic ($v_{2}$) and triangular ($v_{3}$) flow coefficients of heavy-flavour particles give insights into the participation of heavy quarks in the collective motion of the medium, the path-length dependence of their in-medium energy loss, and recombination effects during the hadronisation. Finally, the directed flow ($v_{1}$) of open heavy-flavour particles is sensitive to the unprecedentedly strong magnetic fields present in the early stages of the collision, and so measurements of its charge dependence are key to constraining the electrical conductivity of the QGP. In small hadronic systems like pp, open heavy-flavour production provides the baseline for the investigation of hot-medium effects in heavy-ion collisions, as well as tests of perturbative quantum chromodynamic calculations.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2021-2025 The Author(s) (License: CC-BY-NC-ND-4.0)

$The ${\rm D}_{\rm s}^{+} / {\rm D}^{0}$ (left) and $\Lambda_{\rm c}^{+}/{\rm D}^{0}$ (right) ratios of prompt yields in pp collisions at $\sqrt{s}=13$~TeV measured in different multiplicity intervals. The $\Lambda_{\rm c}^{+}/{\rm D}^{0}$ ratios are compared to different \textsc{PYTHIA} calculations.$ $The ${\rm D}_{\rm s}^{+} / {\rm D}^{0}$ (left) and $\Lambda_{\rm c}^{+}/{\rm D}^{0}$ (right) ratios of prompt yields in pp collisions at $\sqrt{s}=13$~TeV measured in different multiplicity intervals. The $\Lambda_{\rm c}^{+}/{\rm D}^{0}$ ratios are compared to different \textsc{PYTHIA} calculations.$ $Left: Nuclear modification factor of $\Lambda_{\rm c}^{+}$ baryons, non-strange ${\rm D}$ mesons, and ${\rm D}_{\rm s}^{+}$ mesons in the 0--10\% centrality class for Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$~TeV. Right: Nuclear modification factor of $\rm e^{\pm}$ from heavy-flavour hadron decays compared to theoretical predictions~\cite{Acharya:2019mom}.$ Show more plots

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Record creato 2020-11-14, modificato l'ultima volta il 2023-06-13

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