Search Results for author: ALICE Collaboration

Found 13 papers, 5 papers with code

Measurement of beauty and charm production in pp collisions at $\sqrt{s}=5.02$ TeV via non-prompt and prompt D mesons

no code implementations26 Feb 2021 ALICE Collaboration

Compared to previous measurements in the same rapidity region, the cross sections of prompt $\mathrm{D^+}$ and $\mathrm{D_s^+}$ mesons have an extended $p_\mathrm{T}$ coverage and total uncertainties reduced by a factor ranging from 1. 05 to 1. 6, depending on $p_\mathrm{T}$, allowing for a more precise determination of their $p_\mathrm{T}$-integrated cross sections.

Nuclear Experiment High Energy Physics - Experiment

Measurements of mixed harmonic cumulants in Pb-Pb collisions at $\mathbf{\sqrt{{\textit s}_{\rm NN}}}=5.02$ TeV

no code implementations24 Feb 2021 ALICE Collaboration

These new studies on correlations between three flow coefficients as well as correlations between higher moments of two different flow coefficients will pave the way to tighten constraints on initial-state models and help to extract precise information on the dynamic evolution of the hot and dense matter created in heavy-ion collisions at the LHC.

Nuclear Experiment High Energy Physics - Experiment

Coherent $\rm{J/ψ}$ and $\rm{ψ'}$ photoproduction at midrapidity in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}~=~5.02$ TeV

no code implementations12 Jan 2021 ALICE Collaboration

The ratio of $\rm{\psi'}$ to $\rm{J/\psi}$ coherent photoproduction cross sections was also measured and found to be consistent with the one for photoproduction off protons.

Nuclear Experiment High Energy Physics - Experiment

First measurement of the ${\mathbf{|\textit t|}}$-dependence of coherent $\mathbf{\rm{J/ψ}}$ photonuclear production

no code implementations12 Jan 2021 ALICE Collaboration

The first measurement of the cross section for coherent J/$\psi$ photoproduction as a function of $|t|$, the square of the momentum transferred between the incoming and outgoing target nucleus, is presented.

Nuclear Experiment High Energy Physics - Experiment

Production of pions, kaons, (anti-)protons and $φ$ mesons in Xe-Xe collisions at $\sqrt{s_{\rm NN}} = 5.44$ TeV

no code implementations8 Jan 2021 ALICE Collaboration

The first measurement of the production of pions, kaons, (anti-)protons and $\phi$ mesons at midrapidity in Xe-Xe collisions at $\sqrt{s_{\rm NN}} = 5. 44$ TeV is presented.

Nuclear Experiment High Energy Physics - Experiment

Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at $\boldsymbol{\sqrt{\textit s}}=13$ TeV

no code implementations8 Jan 2021 ALICE Collaboration

The results are compared to EPOS LHC and PYTHIA 8 calculations, with and without string-shoving interactions.

Nuclear Experiment High Energy Physics - Experiment

Event-by-event multi-harmonic correlations of different flow amplitudes in Pb-Pb collisions at $\sqrt{s_{_{\rm NN}}}=2.76$ TeV

no code implementations7 Jan 2021 ALICE Collaboration

Therefore, these results can provide new and independent constraints for the initial conditions and system properties of nuclear matter created in heavy-ion collisions, complementary to previous flow measurements.

Nuclear Experiment High Energy Physics - Experiment

First measurement of coherent $ρ^{0}$ photoproduction in ultra-peripheral Xe-Xe collisions at $\mathbf{\sqrt{s_{\rm {\scriptscriptstyle \mathbf{NN}}}} = 5.44}$ TeV

no code implementations7 Jan 2021 ALICE Collaboration

This result, together with previous HERA $\gamma$p data and $\gamma$-Pb measurements from ALICE, describes the atomic number ($A$) dependence of this process, which is particularly sensitive to nuclear shadowing effects and to the approach to the black-disc limit of QCD at a semi-hard scale.

Nuclear Experiment High Energy Physics - Experiment

Suppression of $Λ(1520)$ resonance production in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

1 code implementation11 May 2018 ALICE Collaboration

This is the first observation of the suppression of a baryonic resonance at LHC and the first evidence of $\Lambda(1520)$ suppression in heavy-ion collisions.

Nuclear Experiment High Energy Physics - Experiment

Transverse momentum spectra and nuclear modification factors of charged particles in Xe-Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV

1 code implementation11 May 2018 ALICE Collaboration

The nuclear modification factors in central Xe-Xe collisions and Pb-Pb collisions at a similar center-of-mass energy of $\sqrt{s_{\rm NN}}$ = 5. 02 TeV, and in addition at 2. 76 TeV, at analogous ranges of charged particle multiplicity density $\left\langle\rm{d}N_{\rm ch}/\rm{d}\eta\right\rangle$ show a remarkable similarity at $p_{\rm T}> 10$ GeV/$c$.

Nuclear Experiment High Energy Physics - Experiment

Particle identification in ALICE: a Bayesian approach

1 code implementation3 Feb 2016 ALICE Collaboration

Finally, we present an exploratory study of the measurement of $\Lambda_{\rm c}^{+}\rightarrow {\rm p} {\rm K}^-\pi^+$ in pp collisions at $\sqrt{s}=7$ TeV, using the Bayesian approach for the identification of its decay products.

Data Analysis, Statistics and Probability High Energy Physics - Experiment Nuclear Experiment

Performance of the ALICE Experiment at the CERN LHC

1 code implementation18 Feb 2014 ALICE Collaboration

ALICE is the heavy-ion experiment at the CERN Large Hadron Collider.

Nuclear Experiment High Energy Physics - Experiment

Centrality determination of Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with ALICE

1 code implementation18 Jan 2013 ALICE Collaboration

The centrality is a key parameter in the study of the properties of QCD matter at extreme temperature and energy density, because it is directly related to the initial overlap region of the colliding nuclei.

Nuclear Experiment High Energy Physics - Experiment

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