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ALICE Papers

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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 / ALICE Collaboration, CERN
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. [...]
CERN-EP-2025-257; arXiv:2511.10413.- Geneva : CERN, 2025 - 30. Draft (restricted): 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 / ALICE Collaboration, CERN
(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. [...]
CERN-EP-2025-256; arXiv:2511.10306.- Geneva : CERN, 2025 - 24. Draft (restricted): 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 / ALICE Collaboration, CERN /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/$c$). [...]
CERN-EP-2025-255; arXiv:2511.10311.- Geneva : CERN, 2025 - 23. Draft (restricted): 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 / ALICE Collaboration, CERN
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. [...]
CERN-EP-2025-254; arxiv:2511.10360.- Geneva : CERN, 2025 - 25. Draft (restricted): 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 / ALICE Collaboration, CERN /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. [...]
CERN-EP-2025-253; arXiv:2511.10399.- Geneva : CERN, 2025 - 29. Draft (restricted): PDF;

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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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2025-09-17
16:12
Study of the interaction between $\Xi$ baryons and light mesons via femtoscopy at the LHC / 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.
Meson-baryon systems with strangeness content provide a unique laboratory for investigating the strong interaction and testing theoretical models of hadron structure and dynamics. In this work, the measured correlation functions for oppositely charged $\Xi - \mathrm{K}$ and $\Xi -\pi$ pairs obtained in high-multiplicity pp collisions at $\sqrt{s} = 13$ TeV at the LHC are presented. [...]
arXiv:2509.24519; CERN-EP-2025-215.- Geneva : CERN, 2025 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-09-02
15:56
Evidence of nuclear geometry-driven anisotropic flow in OO and Ne$-$Ne collisions at $\sqrt{s_{\rm NN}}=5.36$ 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.
A central question in strong-interaction physics, governed by quantum chromodynamics (QCD), is whether femto-scale droplets of quark--gluon plasma (QGP) form in small collision systems involving projectiles significantly smaller than heavy ions. Collisions of light ions such as $^{16}$O and $^{20}$Ne offer a unique opportunity to probe the emergence of collective behavior in QCD matter. [...]
arXiv:2509.06428; CERN-EP-2025-203.- Geneva : CERN, 2025 - 23 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-08-11
17:22
$\Sigma^{+}$ production in pp collisions at $\mathbf{\sqrt{\textit s}=13}$ 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.
The first measurement of $\Sigma^{+}$ production at the LHC is presented. The measurement is performed at midrapidity in both minimum-bias and high-multiplicity pp collisions at $\sqrt{s} =13$ TeV. [...]
arXiv:2508.20808; CERN-EP-2025-181.- Geneva : CERN, 2025 - 22 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-08-06
18:15
First direct access to the $\rho^0$p interaction via correlation studies at the LHC / 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. /ALICE
Direct measurements of the $\rho^0$p interaction have remained so far elusive, with most insights derived indirectly from photoproduction or low-energy partial wave analyses. This letter presents the first direct observation of the $\rho^0$p interaction, obtained through two-particle correlations measured in high-multiplicity, ultrarelativistic proton-proton collisions at $\sqrt{s} = 13$ TeV by the ALICE Collaboration at the LHC. [...]
arXiv:2508.09867; CERN-EP-2025-179.- Geneva : CERN, 2025 - 21 p. Draft (restricted): PDF; Fulltext: PDF;

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