CERN Accelerating science

ALICE Preprints

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2024-04-12
04:18
Two-particle angular correlations of identified particles in pp collisions at $\sqrt{s}$ = 13 TeV with ALICE / Ruggiano, Daniela (Warsaw U. of Tech.)
Two-particle angular correlation is one of the most powerful tools to study the mechanism of particle production in proton--proton (pp) collision systems by relating the difference between the azimuthal angle ($\Delta\varphi$) and the rapidity ($\Delta y$) of the particles from a pair. [...]
arXiv:2311.09833.
- 7 p.
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2024-04-09
09:09
Exclusive four pion photoproduction in ultraperipheral Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; 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) et al.
The intense photon fluxes from relativistic nuclei provide an opportunity to study photonuclear interactions in ultraperipheral collisions. The measurement of coherently photoproduced $\pi^+\pi^-\pi^+\pi^-$ final states in ultraperipheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV is presented for the first time. [...]
arXiv:2404.07542; CERN-EP-2024-104.- Geneva : CERN, 2024 - 21 p. Draft (restricted): PDF; Fulltext: PDF;

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2024-04-09
04:57
Particle production and entropy measurement in ALICE / Hutson, Alek
One of the main goals in the study of hadronic interactions at LHC energies is the attempt to characterize the mechanisms involved in particle production in different regimes. [...]
arXiv:2404.03698.
- 4 p.
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2024-03-28
07:50
Particle identification with machine learning from incomplete data in the ALICE experiment / Karwowska, Maja ; Graczykowski, Łukasz ; Deja, Kamil ; Kasak, Miłosz ; Janik, Małgorzata
The ALICE experiment at the LHC measures properties of the strongly interacting matter formed in ultrarelativistic heavy-ion collisions. [...]
arXiv:2403.17436.
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2024-03-22
04:59
Experience gained about Resistive Plate Chambers ageing from the ALICE Muon TRigger/IDentifier detector / Ferretti, Alessandro
The ALICE Muon IDentifier is composed of 72 single-gap bakelite Resistive Plate Chambers, which have been operational since 2009 in maxi-avalanche mode (discrimination threshold:7 mV without amplification) with a Tetrafluoroethane/Isobutane/Sulfur Hexafluoride gas mixture, undergoing counting rates of the order of tens of Hz/cm^2. [...]
arXiv:2403.13618.
- 5 p.
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2024-03-19
12:58
Systematic study of flow vector decorrelation in $\mathbf{\sqrt{\textit{s}_{_{\bf NN}}}=5.02}$ TeV Pb--Pb collisions / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; 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) et al.
Measurements of the $p_{\rm T}$-dependent flow vector fluctuations in Pb--Pb collisions at $\sqrt{s_{_{\rm NN}}} = 5.02~\mathrm{TeV}$ using azimuthal correlations with the ALICE experiment at the LHC are presented. A four-particle correlation approach [1] is used to quantify the effects of flow angle and magnitude fluctuations separately. [...]
arXiv:2403.15213; CERN-EP-2024-084.- Geneva : CERN, 2024 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2024-03-01
07:39
Coherent $J/\psi$ photoproduction and polarization in peripheral Pb$-$Pb collisions / Shatat, Afnan (IJCLab, Orsay)
Photonuclear reactions are induced by the strong electromagnetic field generated by ultrarelativistic heavy-ion collisions. [...]
arXiv:2402.12469.
- 4 p.
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2024-02-23
10:18
Measurement of beauty-quark production in pp collisions at $\mathbf{\sqrt{\textit{s}}=13}$ TeV via non-prompt D mesons / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; 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) et al.
The $p_{\rm T}$-differential production cross sections of non-prompt D$^{0}$, D$^{+}$, and D$^{+}_{\rm s}$ mesons originating from beauty-hadron decays are measured in proton--proton collisions at a centre-of-mass energy $\sqrt{s}$ of 13 TeV. The measurements are performed at midrapidity, $|y| < 0.5$, with the data sample collected by ALICE from 2016 to 2018. [...]
arXiv:2402.16417; CERN-EP-2024-055.- Geneva : CERN, 2024 - 30 p. Draft (restricted): PDF; Fulltext: PDF;

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2024-02-12
14:37
Jet measurements in small systems relevant for in-medium modifications / Radl, Attila Jozsef (Budapest, RMKI) /ALICE, ATLAS and CMS Collaborations
Ultrarelativistic heavy-ion collisions provide insights into the early stages of the expanding universe. The quark-gluon plasma (QGP) is a unique state of matter formed in such high-energy interactions. [...]
CMS-CR-2024-014.- Geneva : CERN, 2024 - 6 p. Fulltext: PDF;
In : 11th Large Hadron Collider Physics Conference 2023, Belgrade, Serbia, 22 - 26 May 2023

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2024-02-06
04:17
The O2 software framework and GPU usage in ALICE online and offline reconstruction in Run 3 / Eulisse, Giulio (CERN) ; Rohr, David (CERN)
ALICE has upgraded many of its detectors for LHC Run 3 to operate in continuous readout mode recording Pb--Pb collisions at 50 kHz interaction rate without trigger. [...]
arXiv:2402.01205.
- 11 p.
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