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ALICE Papers

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2023-01-30
18:45
Symmetry plane correlations in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV / ALICE Collaboration, CERN /ALICE
A newly developed observable for correlations between symmetry planes, which characterize the direction of the anisotropic emission of produced particles, is measured in Pb--Pb collisions at $\sqrt{s_\text{NN}}$~=~2.76~TeV with ALICE. This so-called Gaussian Estimator allows for the first time the study of these quantities without the influence of correlations between different flow amplitudes. [...]
CERN-EP-2023-012.- Geneva : CERN, 2023 Draft (restricted): PDF;

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2023-01-26
11:16
ALICE upgrades during the LHC Long Shutdown 2 / ALICE Collaboration, CERN /ALICE
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. [...]
CERN-EP-2023-009.- Geneva : CERN, 2023 Draft (restricted): PDF;

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2023-01-23
12:50
Exploring the non-universality of charm hadronisation through the measurement of the fraction of jet longitudinal momentum carried by $\Lambda_{\rm c}^{+}$ baryons in pp collisions
Recent measurements of charm-baryon production in hadronic collisions have questioned the universality of charm-quark fragmentation across different collision systems. [...]
arXiv:2301.13798 ; CERN-EP-2023-005. - 2023. - 9 p.
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2022-12-20
14:34
Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV /ALICE Collaboration
The azimuthal anisotropy of particles associated with jets (jet particles) at midrapidity is measured for the first time in p-Pb and Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV down to transverse momentum ($p_{\rm T}$) of 0.5 GeV/$c$ and 2 GeV/$c$, respectively, with ALICE. The second-order Fourier coefficient of the jet-particle azimuthal distribution ($v_2$) in high-multiplicity p-Pb collisions is positive, with a significance reaching 6.8$\sigma$ at low $p_{\rm T}$. [...]
arXiv:2212.12609; CERN-EP-2022-290.- Geneva : CERN, 2022 - 12 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-12-09
16:41
First measurement of prompt and non-prompt ${\rm D^{*+}}$ vector meson spin alignment in pp collisions at $\sqrt{s} = 13$ TeV
This letter reports the first measurement of spin alignment, with respect to the helicity axis, for ${\rm D^{*+}}$ vector mesons and their charge conjugates from charm-quark hadronisation (prompt) and from beauty-meson decays (non-prompt) in hadron collisions. [...]
arXiv:2212.06588 ; CERN-EP-2022-283. - 2022. - 16 p.
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2022-11-29
18:50
Measurement of (anti)nuclei production in p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV
Measurements of (anti)proton, (anti)deuteron, and (anti)$^3$He production in the rapidity range $-1<y< 0$ as a function of the transverse momentum and event multiplicity in p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}} = 8.16$ TeV are presented. [...]
arXiv:2212.04777 ; CERN-EP-2022-275. - 2022. - 20 p.
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2022-11-24
14:42
Production of pions, kaons and protons as a function of the transverse event activity in pp collisions at $\sqrt{s}$ = 13 TeV /ALICE Collaboration
The production of $\pi^\pm$, K$^\pm$, and ($\overline{\mathrm{p}}$)p is measured in pp collisions at $\sqrt{s}$ = 13 TeV in different topological regions of the events. Particle transverse momentum ($p_{\rm T}$) spectra are measured in the ``toward'', ``transverse'', and ``away'' angular regions defined with respect to the direction of the leading particle in the event. [...]
arXiv:2301.10120; CERN-EP-2022-286.- Geneva : CERN, 2022 - 25 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-23
19:35
Multiplicity dependence of charged-particle production in pp, p-Pb, Xe-Xe and Pb-Pb collisions at the LHC /ALICE Collaboration
Multiplicity ($N_{\mathrm {ch}}$) distributions and transverse momentum ($p_{\mathrm T}$) spectra of inclusive primary charged particles in the kinematic range of $|\eta| < 0.8$ and 0.15 GeV/$c$ $< p_{\mathrm T} < 10$ GeV/$c$ are reported for pp, p-Pb, Xe-Xe and Pb-Pb collisions at centre-of-mass energies per nucleon pair ranging from $\sqrt{s_\mathrm{NN}} = 2.76$ TeV up to 13 TeV. A sequential two-dimensional unfolding procedure is used to extract the correlation between the transverse momentum of primary charged particles and the charged-particle multiplicity of the corresponding collision. [...]
arXiv:2211.15326; CERN-EP-2022-266.- Geneva : CERN, 2022 - 24 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-18
22:59
Enhanced deuteron coalescence probability in jets /ALICE Collaboration
The transverse-momentum ($p_{\rm T}$) spectra and coalescence parameters $B_2$ of (anti)deuterons are measured in pp collisions at $\sqrt{s} = 13$ TeV in and out of jets. In this measurement, the direction of the leading particle with the highest $p_{\rm T}$ in the event ($p_{\rm T}^{\rm{ lead}} > 5$ GeV/$c$) is used as an approximation for the jet axis [...]
arXiv:2211.15204; CERN-EP-2022-264.- Geneva : CERN, 2022 - 11 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-18
19:07
Light (anti)nuclei production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV /ALICE Collaboration
The measurement of the production of deuterons, tritons and ${^{3}\mathrm{He}}$ and their antiparticles in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV is presented in this article. The measurements are carried out at midrapidity ($|y| < 0.5$) as a function of collision centrality using the ALICE detector. [...]
arXiv:2211.14015; CERN-EP-2022-263.- Geneva : CERN, 2022 - 16 p. Draft (restricted): PDF; Fulltext: PDF;

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