CERN Accelerating science

ALICE Preprints

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2025-04-02
04:06
Event-activity dependence of heavy-flavor production at the ALICE experiment / Vertesi, Robert (Wigner RCP, Budapest)
Heavy-flavor production at the LHC offers valuable tests of quantum-chromodynamics calculations, owing to the large masses of heavy quarks. [...]
arXiv:2503.23850.
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2025-03-26
11:39
First measurement of D$^{*+}$ vector spin alignment in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration, CERN
The first measurement of prompt D$^{*+}$ meson spin alignment in ultrarelativistic heavy-ion collisions with respect to the direction orthogonal to the reaction plane is presented. The spin alignment is quantified by measuring the element $\rho_{00}$ of the diagonal spin-density matrix for prompt D$^{*+}$ mesons with $4 < p_{\rm T} < 30$ GeV/$c$ in two rapidity intervals, $|y| < 0.3$ and $0.3 < |y| < 0.8$, in central (0– 10%) and midcentral (30–50%) Pb–Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV. [...]
CERN-EP-2025-072.- Geneva : CERN, 2025 - 17. Draft (restricted): PDF;

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2025-03-26
07:16
Multiplicity-dependent inclusive J/$\psi$ production at forward rapidity in pp collisions at $\sqrt{s} = 13$ TeV / ALICE Collaboration, CERN
This paper presents a study of the inclusive forward J/$\psi$ yield as a function of forward charged-particle multiplicity in pp collisions at $\sqrt{s} = 13$ TeV using data collected by the ALICE experiment at the CERN LHC. The results are presented in terms of relative J/ψ yields and relative charged-particle multiplicities with respect to these quantities obtained in inelastic collisions having at least one charged particle in the pseudorapidity range $|\eta| < 1$. [...]
CERN-EP-2025-070.- Geneva : CERN, 2025 - 14. Draft (restricted): PDF;

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2025-03-20
04:08
Coaching station for FIT on-call shifters / Roslon, Krystian
We present an efficient and cost-effective way to train operators of complex systems with limited accessibility, such as sub-detectors of big experiments at the CERN Large Hadron Collider (LHC). [...]
arXiv:2503.14196.
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2025-03-19
20:54
Measurement of correlations among net-charge, net-proton, and net-kaon multiplicity distributions in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / Acharya, Shreyasi (INFN, Bari) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
Correlations among conserved quantum numbers, such as the net-electric charge, the net-baryon, and the net-strangeness in heavy-ion collisions, are crucial for exploring the QCD phase diagram. In this letter, these correlations are investigated using net-proton number (as a proxy for the net-baryon), net-kaon number (for the net-strangeness), and net-charged particle number in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV with the ALICE detector. [...]
arXiv:2503.18743; CERN-EP-2025-066.- Geneva : CERN, 2025 - 26 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-03-15
07:08
Evidence for J/$\psi$ suppression in incoherent photonuclear production / Acharya, Shreyasi (INFN, Bari) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
According to quantum chromodynamics, at sufficiently high energy, the structure of hadrons reveals a dynamic equilibrium between gluon splitting and gluon recombination—a phenomenon known as saturation. The process of diffractive photonuclear production of a J/$\psi$ vector meson provides a direct insight into the gluon composition of hadrons. [...]
arXiv:2503.18708; CERN-EP-2025-057.- Geneva : CERN, 2025 - 18 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-03-11
04:09
ALICE Fast Interaction Trigger Upgrade / Roslon, Krystian (Warsaw U. of Tech.)
This proceeding provides an expanded overview of the Fast Interaction Trigger (FIT) system performance, focusing on new developments such as the prospective integration of the ALICE Low-Level Front-End Device (ALFRED) into the Detector Control System (DCS) and an upgraded Front-End Electronics (FEE) approach to enhance dynamic range and operational reliability. [...]
arXiv:2503.05518.
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2025-03-05
04:23
ALICE Event Display -- from the legacy ROOT-based visualization to the web-based application / Myrcha, Julian Wojciech (Warsaw U. of Tech.)
A Large Ion Collider Experiment (ALICE) is one of the four big CERN experiments at the LHC. [...]
arXiv:2503.00088.
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2025-02-24
20:22
Investigating the p-$\pi^{\pm}$ and p-p-$\pi^{\pm}$ dynamics with femtoscopy in pp collisions at $\sqrt{s} = 13$ TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
The interaction between pions and nucleons plays a crucial role in hadron physics. It represents a fundamental building block of the low-energy QCD dynamics and is subject to several resonance excitations [...]
arXiv:2502.20200; CERN-EP-2025-034.- Geneva : CERN, 2025 - 40 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-02-24
15:07
Measurement of $\omega$ meson production in pp and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / Acharya, Shreyasi (INFN, Bari) ; Agarwal, Apar (Calcutta, VECC) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
We present the measurement of the $p_{\rm T}$-differential production cross section of $\omega$ mesons in pp and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV at midrapidity by ALICE. In addition, the first measurement of the nuclear modification factor $R_{\text{pPb}}$ for $\omega$ mesons at LHC energies is presented, complementing the existing measurements of lighter neutral mesons such as the $\pi^0$ and $\eta$. [...]
arXiv:2502.19956; CERN-EP-2025-033; ALICE-PUBLIC-2025-003.- Geneva : CERN, 2025 - 27 p. Draft (restricted): PDF; Fulltext: PDF;

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