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ALICE Papers

Derniers ajouts:
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, CERN
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. [...]
CERN-EP-2022-266.- Geneva : CERN, 2022 Draft (restricted): PDF;

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2022-11-18
22:59
Enhanced deuteron coalescence probability in jets / ALICE Collaboration, CERN /ALICE
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 [...]
CERN-EP-2022-264; arXiv:2211.15204.- 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, CERN /ALICE
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. [...]
CERN-EP-2022-263; arXiv:2211.14015.- Geneva : CERN, 2022 - 16 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-18
14:29
Pseudorapidity densities of charged particles with transverse momentum thresholds in pp collisions at $\sqrt{s}=$ 5.02 and 13 TeV / ALICE Collaboration, CERN
The pseudorapidity density of charged particles with minimum transverse momentum ($p_{\rm T}$) thresholds of 0.15, 0.5, 1, and 2 GeV$/c$ was measured in pp collisions at centre-of-mass energies of $\sqrt{s}=$ 5.02 and 13 TeV with the ALICE detector. The study is carried out for inelastic collisions with at least one primary charged particle having a pseudorapidity ($\eta$) within $\pm0.8$ and $p_{\rm T}$ larger than the corresponding threshold [...]
CERN-EP-2022-262.- Geneva : CERN, 2022 Draft (restricted): PDF;

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2022-11-18
13:54
First measurement of $\mathbf{\Lambda}_\mathbf{c}^\mathbf{+}$ production down to $p_\mathbf{T} = \mathbf{0}$ in pp and p-Pb collisions at $\sqrt{s_\mathbf{NN}}= \mathbf{5.02 TeV}$ / ALICE Collaboration, CERN
The production of prompt ${\mathrm {\Lambda_{c}^{+}}}$ baryons has been measured at midrapidity in the transverse momentum interval $0 < p_{\rm T} < 1$ GeV/$c$ for the first time, in pp and p-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_\mathrm{NN}} = 5.02$ TeV. The measurement was performed in the decay channel $\mathrm{\rm \Lambda_{c}^{+} \to p K^{0}_{S}}$ by applying new decay reconstruction techniques using a Kalman-Filter vertexing algorithm and adopting a machine-learning approach for the candidate selection. [...]
CERN-EP-2022-261; arXiv:2211.14032.- Geneva : CERN, 2022 - 21 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-16
15:52
Investigation of ${\rm K^+ K^-}$ interactions via femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV at the LHC / ALICE Collaboration, CERN /ALICE
Femtoscopic correlations of non-identical charged kaons (${\rm K^+ K^-}$) are studied in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\rm NN}} = 2.76$ TeV by ALICE at the LHC. One-dimensional ${\rm K^+ K^-}$ correlation functions are analyzed in three centrality classes and eight intervals of particle-pair transverse momentum. [...]
CERN-EP-2022-257; arXiv:2211.15194.- Geneva : CERN, 2022 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-16
09:27
J/$\psi$ production at midrapidity in p$-$Pb collisions at $\sqrt{s_{NN}} = 8.16$ TeV / ALICE Collaboration, CERN /ALICE
The production of inclusive, prompt and non-prompt J/$\psi$ was studied for the first time at midrapidity ($ -1.37 < y_{\rm cms} < 0.43$) in p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV with the ALICE detector at the LHC. The inclusive J/$\psi$ mesons were reconstructed in the dielectron decay channel in the transverse momentum ($p_{\rm T}$) interval $0 < p_{\rm T} < 14$ \GeVc and the prompt and non-prompt contributions were separated on a statistical basis for $p_{\rm T} > 2$ \GeVc [...]
CERN-EP-2022-256; arXiv:2211.14153.- Geneva : CERN, 2022 - 23 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-11-07
22:29
Measurement of the angle between jet axes in pp collisions at $\sqrt{s}=5.02$ TeV / ALICE Collaboration, CERN
This article reports measurements of the angle between differently defined jet axes in pp collisions at $\sqrt{s} = 5.02$ TeV carried out by the ALICE Collaboration. Charged particles at midrapidity are clustered into jets with resolution parameters $R=0.2$ and 0.4. [...]
CERN-EP-2022-242.- Geneva : CERN, 2022 Draft (restricted): PDF;

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2022-11-03
16:04
Measurement of electrons from beauty-hadron decays in pp and Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / ALICE Collaboration, CERN /ALICE
The production of electrons from beauty-hadron decays was measured at midrapidity in proton-proton (pp) and central Pb-Pb collisions at center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}}$ = 5.02 TeV, using the ALICE detector at the LHC. The cross section measured in pp collisions in the transverse momentum interval $2 < p_{\rm T} < 8$ GeV/$c$ was compared with models based on perturbative quantum chromodynamics calculations [...]
CERN-EP-2022-238; arXiv:2211.13985.- Geneva : CERN, 2022 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-10-27
09:39
Two-particle transverse momentum correlations in pp and p-Pb collisions at LHC energies / ALICE Collaboration, CERN /ALICE
Two-particle transverse momentum differential correlators, recently measured in Pb-Pb collisions at LHC energies, provide an additional tool to gain insights into particle production mechanisms and infer transport properties, such as the ratio of shear viscosity to entropy density, of the medium created in Pb--Pb collisions. The longitudinal long-range correlations and the large azimuthal anisotropy measured at low transverse momenta in small collision systems, namely pp and p-Pb, at LHC energies resemble manifestations of collective behaviour. [...]
CERN-EP-2022-230.- Geneva : CERN, 2022 - 22. Draft (restricted): PDF;

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