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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 / 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.
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. [...]
arXiv:2504.00714; CERN-EP-2025-072.- Geneva : CERN, 2025 - 24 p. Draft (restricted): PDF; Fulltext: 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 / 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.
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

$|\eta| < 1$ . [...]
arXiv:2504.00686; CERN-EP-2025-070.- Geneva : CERN, 2025 - 21 p. Draft (restricted): PDF; Fulltext: PDF;

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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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2025-02-24
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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2025-02-18
15:52

Observation of the $\Omega$ (2012) baryon at the LHC / 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.
A signal consistent with the

$\Omega$ (2012) baryon has been observed with a significance of

$15\sigma$ in pp collisions at

$\sqrt{s} = 13$ TeV at the LHC. In this paper, the analysis technique is described and measurements of the mass and width of the

$\Omega$ (2012) are reported, along with the first measurement of its transverse-momentum spectrum and yield. [...]
arXiv:2502.18063; CERN-EP-2025-027.- Geneva : CERN, 2025 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-02-17
17:12

Measurement of isolated prompt photon production in pp and p–Pb collisions at the LHC / 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.
This paper presents the measurement of the isolated prompt photon inclusive production cross section in pp and p-Pb collisions by the ALICE Collaboration at the LHC. The measurement is performed in p-Pb collisions at centre-of-mass energies per nucleon pair of

$\sqrt{s_{\text{NN}}}= 5.02$ TeV and

$8.16$ TeV, as well as in pp collisions at

$\sqrt{s} =5.02$ TeV and

$8$ TeV. [...]
arXiv:2502.18054; CERN-EP-2025-024; ALICE-PUBLIC-2025-002.- Geneva : CERN, 2025 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2025-02-17
14:44

Charged-particle multiplicity distributions over a wide pseudorapidity range in p-Pb collisions at $\sqrt{\textit{s}_{\rm NN}} = 5.02$ 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.
This paper presents the primary charged-particle multiplicity distributions in proton-lead collisions at a centre-of-mass energy per nucleon-nucleon collision of

$\sqrt{\textit{s}}_{\rm NN} = 5.02$ TeV. The distributions are reported for non-single diffractive collisions in different pseudorapidity ranges. [...]
arXiv:2502.18081; CERN-EP-2025-023.- Geneva : CERN, 2025 - 23 p. Draft (restricted): PDF; Fulltext: PDF;

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2024-12-17
14:05

First measurement of symmetric cumulants of hexagonal flow harmonics in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 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 between event-by-event fluctuations of anisotropic flow harmonics are measured in Pb-Pb collisions at a center-of-mass energy per nucleon pair of 5.02~TeV, as recorded by the ALICE detector at the LHC. This study presents correlations up to the hexagonal flow harmonic,

$v_6$ , which was measured for the first time. [...]
arXiv:2412.15873; CERN-EP-2024-344.- Geneva : CERN, 2024 - 21 p. Draft (restricted): PDF; Fulltext: PDF;

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