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ALICE Preprints

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2025-11-14
04:20
Sensor operating point calibration and monitoring of the ALICE Inner Tracking System during LHC Run 3 / ALICE ITS Collaboration
The new Inner Tracking System (ITS2) of the ALICE experiment began operation in 2021 with the start of LHC Run 3. [...]
arXiv:2510.27592.
- 30.
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2025-11-12
05:02
Yield and performance validation of the Monolithic Stitched Sensor (MOSS), the first wafer-scale prototype for the ALICE ITS3 upgrade / Menzel, Marius Wilm (CERN ; U. Heidelberg (main))
The ALICE Inner Tracking System upgrade (ITS3) will employ stitched, wafer-scale Monolithic Active Pixel Sensors (MAPS) for the first time in high-energy physics, achieving a material budget of only 0.09$\,$%$\,$X$\mathrm{_{0}}$ per layer. [...]
arXiv:2511.02403.
- 7.
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2025-11-05
17:01
Strangeness enhancement at its extremes: multiple (multi-)strange hadron production in pp collisions at $\mathbf{\sqrt{\textit{s}} = 5.02}$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) ; Akindinov, Alexander (Unlisted) et al.
The probability to observe a specific number of strange and multi-strange hadrons ($n_s$), denoted as $P(n_s)$, is measured by ALICE at midrapidity ($|y|<0.5$) in $\sqrt{s} = 5.02$ TeV proton-proton (pp) collisions, dividing events into several multiplicity-density classes. Exploiting a novel technique based on counting the number of strange-particle candidates event-by-event, this measurement allows one to extend the study of strangeness production beyond the mean of the distribution. [...]
arXiv:2511.10413; CERN-EP-2025-257.- Geneva : CERN, 2025 - 34 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-11-05
16:09
Strangeness production as a function of charged-particle multiplicity in proton--proton collisions at ${\bf \sqrt{s} = 5.02}$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) ; Akindinov, Alexander (Unlisted) et al.
(Multi-)strange particle production rates and transverse momentum distributions are measured at midrapidity ($|y|<0.5$) as a function of the charged-particle multiplicity density by the ALICE experiment at the LHC, using proton$-$proton collisions at a center-of-mass energy of $\sqrt{s} = 5.02$ TeV. This study extends similar studies performed at $\sqrt{s} = 7$ TeV. [...]
arXiv:2511.10306.- Geneva : CERN, 2025 - 24 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-11-04
17:11
Time resolution of the ALICE Time-Of-Flight detector with the first Run 3 pp collisions at ${\sqrt{\textit{s}} = 13.6}$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) ; Akindinov, Alexander (Unlisted) et al. /ALICE
Particle identification (PID) is a fundamental aspect of the ALICE detector system, central to its heavy-ion and proton-proton physics programs. Among the different PID strategies, ALICE uses the Time-Of-Flight (TOF) detector to identify particles at intermediate momenta ($0.5 < p_{\rm T} <4$ GeV/$c$). [...]
arXiv:2511.10311; CERN-EP-2025-255.- Geneva : CERN, 2025 - 23 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-11-04
16:53
Centrality dependence of strange particle production in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}= 5.02$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) ; Akindinov, Alexander (Unlisted) et al.
The centrality dependence of strange (K$^0$, $\Lambda +\bar{\Lambda}$) and multi-strange ($\Xi^{-} +\Xi^{+}$, $\Omega^{-}+\Omega^{+}$) hadron production is measured by ALICE in the LHC lead$-$lead (Pb$-$Pb) collisions at a center-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}=5.02$ TeV, using the full data set collected during the LHC Run 2 campaign in the years 2015 and 2018. This is the largest heavy$-$ion data set analyzed to date at the LHC, and it allows for the extraction of transverse momentum ($p_{\rm T}$) spectra and $p_{\rm T}$-integrated yields with unprecedented precision, over a broad range of charged particle multiplicity densities ($\langle {\rm d}N/{\rm d}\eta \rangle_{|\eta|~<~0.5}$), probing regions where smaller collision system (pp and p$-$Pb) results are also available. [...]
arXiv:2511.10360; CERN-EP-2025-256; CERN-EP-2025-254.- Geneva : CERN, 2025 - 25 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-11-04
16:44
Multiplicity dependence of two-particle angular correlations of identified particles in pp collisions at $\sqrt{s} = 13$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; Aglieri Rinella, Gianluca (CERN) ; Aglietta, Luca (Turin U. ; INFN, Turin) ; Agrawal, Neelima (Bologna U. ; INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) ; Akindinov, Alexander (Unlisted) et al. /ALICE
Two-particle angular correlations explore particle production mechanisms and underlying event-wide phenomena present in the systems created in hadronic collisions. In this paper, these correlations are examined as a function of rapidity and azimuthal-angle differences ($\Delta y, \Delta \varphi$) for pairs of like- and unlike-sign pions, kaons, and (anti-)protons produced in pp collisions at $\sqrt{s}$ = 13 TeV, measured by the ALICE experiment. [...]
arXiv:2511.10399; CERN-EP-2025-253.- Geneva : CERN, 2025 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-09-22
11:26
QCD measurements in pp collisions / Meena, Meena (Strasbourg, IPHC) /ALICE,ATLAS,CMS and LHCB Collaborations
Quantum Chromodynamics (QCD) plays a fundamental role in describing the dynamics of high energy proton-proton collisions at the Large Hadron Collider. As the dominant interaction in these collisions, QCD governs both signal processes and complex backgrounds that must be understood and controlled. [...]
CMS-CR-2025-144.- Geneva : CERN, 2025 - 11 p. Fulltext: PDF;
In : 13th Edition of the Large Hadron Collider Physics Conference (LHCP2025), Taipei, Tw, 5 - 9 May 2025

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2025-09-22
10:39
Measurement of the p$-\Sigma^+$ correlation function in pp collisions at $\sqrt{\textit{s}}=13$ TeV / Abualrob, Ibrahim Jaser (Houston U.) ; Acharya, Shreyasi (INFN, Bari) ; 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.) ; Ahuja, Ishaan (Kosice U.) ; Akbar, Zulkaida (Jakarta LIPI, Indonesian Inst. Sci.) et al.
In this letter, the first measurement of the femtoscopic correlation of protons and $\Sigma^+$ hyperons is presented and used to study the p$-\Sigma^+$ interaction. The measurement is performed with the ALICE detector in high-multiplicity triggered pp collisions at $\sqrt{s} = 13$ TeV. [...]
arXiv:2510.14448; CERN-EP-2025-218.- Geneva : CERN, 2025 - 24 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-09-18
04:07
Quarkonia collectivity in large collision systems with ALICE / Zhang, Chi (IRFU, Saclay, DPHN)
Quarkonium production is one of the golden probes to study the quark--gluon plasma (QGP). [...]
arXiv:2509.06240.
- 4.
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