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Prompt D⁰, D⁺, and D^(*+) production in Pb-Pb collisions at sqrt{s_(rm NN)} = 5.02 TeV

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arxiv 2110.09420 v3 pith:G4ZRMVJV submitted 2021-10-18 nucl-ex hep-ex

Prompt D⁰, D⁺, and D^(*+) production in Pb-Pb collisions at sqrt{s_(rm NN)} = 5.02 TeV

classification nucl-ex hep-ex
keywords mesonscollisionsmeasuredpb-pbproductionpromptallowedcentrality
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $\sqrt{s_{\rm NN}}$ = 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 ($p_{\rm T}$) 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 $p_{\rm T}$ = 0, which allowed a model-independent determination of the $p_{\rm T}$-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 ($R_{\rm AA}$) of prompt D mesons at $p_{\rm T}$ = 6-8 GeV/$c$ for the 0-10% and 30-50% centrality classes, respectively. The D-meson $R_{\rm AA}$ 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 $R_{\rm AA}$, 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 $R_{\rm AA}$ 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.

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Forward citations

Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Bayesian Inference of Heavy-Quark Dissipation and Jet Transport Parameters from D-Meson observables in heavy-ion collisions at the LHC energies

    nucl-th 2025-12 unverdicted novelty 7.0

    First simultaneous Bayesian extraction of 2πT D_s and q-hat/T^3 from D-meson R_AA and v2 at 5.02 TeV, yielding a non-monotonic temperature dependence in their ratio that deviates from the expected value of 2.

  2. Out-of-equilibrium contributions to charm hadrons in a fluid-dynamic approach

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    Out-of-equilibrium corrections at initialization and freeze-out make computed charm-hadron yields independent of the charm diffusion coefficient and define the reliable transverse-momentum range.

  3. Heavy quark polarization anisotropy as a novel probe of fireball geometry

    hep-ph 2026-01 reject novelty 5.0

    Heavy-flavor polarization harmonics are introduced as observables whose Fourier coefficients are claimed to be proportional to the initial fireball spatial eccentricities.

  4. Perturbative and nonperturbative properties of heavy quark transport in a thermal SU(3) gluon plasma

    hep-ph 2025-10 conditional novelty 5.0

    In a gluon plasma near Tc, a temperature-dependent background color field suppresses heavy-quark collisional energy loss and momentum diffusion relative to perturbative QCD.

  5. Bottomonium transport in a strongly coupled quark-gluon plasma

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    A semiclassical transport model using lattice-constrained T-matrix rates and viscous hydrodynamics reproduces the centrality dependence of bottomonium yields in 5.02 TeV Pb-Pb collisions within uncertainties.

  6. Non-Markovian heavy-quark equilibration and equilibrium correlation function in a thermal medium

    hep-ph 2026-07 conditional novelty 4.0

    Memory (colored noise) changes the transient equilibration of heavy quarks but leaves their asymptotic spatial diffusion coefficient unchanged in this Langevin model.

  7. Investigating forward-backward asymmetry in D-meson production and anisotropic flow in p-Pb collisions at the LHC

    nucl-th 2026-06 unverdicted novelty 4.0

    AMPT model calculations indicate that forward-backward asymmetry in D0 meson RpPb and v2 in 8.16 TeV p-Pb collisions arises from initial-state cold nuclear effects and final-state partonic interactions, with coalescen...