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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.
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$\Sigma^{+}$ 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.
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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.
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Multiplicity dependence of $\Xi_{\rm c}^+$ and $\Xi_{\rm c}^0$ production 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) ; 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 at midrapidity ($|y|< 0.5$) of the production yield of the strange-charm baryons $\Xi_{\rm c}^+$ and $\Xi_{\rm c}^0$ as a function of charged-particle multiplicity in proton$-$proton collisions at $\sqrt{s}=13$ TeV with the ALICE experiment at the LHC is reported. The $\Xi_{\rm c}^+$ baryon is reconstructed via the $\Xi_{\rm c}^+ \rightarrow \Xi^- \pi^+ \pi^+$ decay channel in the range $ 4 < p_{\rm T} <12$ GeV/$c$, while the $\Xi_{\rm c}^0$ baryon is reconstructed via both the $\Xi_{\rm c}^0 \longrightarrow \Xi^- \pi^+$ and $\Xi_{\rm c}^0 \rightarrow {\rm e}^+ \nu_{\rm e}$ decay channels in the range $2 < p_{\rm T} <12$ GeV/$c$. [...]
arXiv:2508.09955; CERN-EP-2025-175.-
Geneva : CERN, 2025 - 27 p.
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Measurement of ω meson production in pp collisions at $ \sqrt{s} $ = 13 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 $p_{\rm T}$-differential cross section of $\omega$ meson production in pp collisions at $\sqrt{s}$ = 13 TeV at midrapidity ($|y| < 0.5$) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of $1.6 < p_{\rm T} < 50$ GeV/$c$. The meson is reconstructed via the $\omega \rightarrow \pi^+ \pi^- \pi^0$ decay channel. [...]
arXiv:2411.09432; CERN-EP-2024-303.-
Geneva : CERN, 2025-04-09 - 26 p.
- Published in : JHEP 2504 (2025) 067
Draft (restricted): PDF; Fulltext: 2411.09432 - PDF; document - PDF;
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First Measurement of A=4 Hypernuclei and Antihypernuclei at the LHC
/ ALICE Collaboration
In this Letter, the first evidence of the ${}^4_{\bar{\Lambda}}\overline{\mathrm{He}}$ antihypernucleus is presented, along with the first measurement at the LHC of the production of (anti)hypernuclei with mass number $A=4$, specifically (anti)${}^4_{\Lambda}\mathrm{H}$ and (anti)${}^4_{\Lambda}\mathrm{He}$. In addition, the antiparticle-to-particle ratios for both hypernuclei (${}^4_{\bar{\Lambda}}\overline{\mathrm{H}}$ / ${}^4_{\Lambda}\mathrm{H}$ and ${}^4_{\bar{\Lambda}}\overline{\mathrm{He}}$ / ${}^4_{\Lambda}\mathrm{He}$) are shown, which are sensitive to the baryochemical potential of the strongly-interacting matter created in heavy-ion collisions. [...]
arXiv:2410.17769; CERN-EP-2024-265.-
Geneva : CERN, 2025-04-23 - 16 p.
- Published in : Phys. Rev. Lett. 134 (2025) 162301
Draft (restricted): PDF; Fulltext: 2410.17769 - PDF; publication - PDF; PhysRevLett.134.162301 - XML;
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First observation of strange baryon enhancement with effective energy in pp collisions at the LHC
/ ALICE Collaboration
The production of (multi-)strange hadrons is measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s} = 13$ TeV as a function of the local charged-particle multiplicity in the pseudorapidity interval ${|\eta|<0.5}$ and of the very-forward energy measured by the ALICE Zero-Degree Calorimeters (ZDC). The latter provides information on the effective energy available for particle production in the collision once subtracted from the centre-of-mass energy. [...]
arXiv:2409.12702; CERN-EP-2024-243.-
Geneva : CERN, 2025-03-05 - 38 p.
- Published in : JHEP 2503 (2025) 029
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Investigating charm quark energy loss in medium with the nuclear modification factor of D$^0$-tagged jets
/ 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 nuclear modification factor $R_\mathrm{AA}$ of charm jets, identified by the presence of a D$^0$ meson among the jet constituents, has been measured for the first time in Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV with the ALICE detector at the LHC. The D$^0$ mesons and their charge conjugates are reconstructed from the hadronic decay D$^0\to \mathrm K^{-}\pi^{+}$. [...]
arXiv:2409.11939; CERN-EP-2024-240.-
Geneva : CERN, 2024 - 25 p.
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