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ALICE Papers

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2023-11-20
12:30
Measurements of chemical potentials in Pb–Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; 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.) ; Akindinov, Alexander (Unlisted) et al.
This Letter presents the most precise measurement to date of the matter/antimatter imbalance at midrapidity in Pb–Pb collisions at a center-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, $\mu_{\rm Q} = −0.18 \pm 0.90$ MeV and $\mu_{\rm B} = 0.71 \pm 0.45$ MeV, with unprecedented precision. [...]
arXiv:2311.13332; CERN-EP-2023-268.- Geneva : CERN, 2023 - 25 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-20
11:51
Common femtoscopic hadron-emission source in pp collisions at the LHC / ALICE Collaboration
The femtoscopic study of pairs of identical pions is particularly suited to investigate the effective source function of particle emission, due to the resulting Bose-Einstein correlation signal. In small collision systems at the LHC, pp in particular, the majority of the pions are produced in resonance decays, which significantly affect the profile and size of the source. [...]
arXiv:2311.14527; CERN-EP-2023-267.- Geneva : CERN, 2023 - 29 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-17
10:22
Emergence of long-range angular correlations in low-multiplicity proton$-$proton collisions / ALICE Collaboration
This Letter presents the measurement of near-side associated per-trigger yields, denoted ridge yields, from the analysis of angular correlations of charged hadrons in proton--proton collisions at $\sqrt{s}$ = 13 TeV. Long-range ridge yields are extracted for pairs of charged particles with a pseudorapidity difference of $1.4 < |\Delta\eta| < 1.8$ and a transverse momentum of $1 < p_{\rm T} < 2$ GeV/$c$, as a function of the charged-particle multiplicity measured at mid-rapidity. [...]
arXiv:2311.14357; CERN-EP-2023-265.- Geneva : CERN, 2023 - 19 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-17
09:57
Multiplicity dependence of charged-particle intra-jet properties in pp collisions at $\sqrt{s}$ = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al.
The first measurement of the multiplicity dependence of intra-jet properties of leading charged-particle jets in proton$-$proton (pp) collisions is reported. The mean charged-particle multiplicity and jet fragmentation distributions are measured in minimum-bias and high-multiplicity pp collisions at center-of-mass energy $\sqrt{s}$ = 13 TeV using the ALICE detector. [...]
arXiv:2311.13322; CERN-EP-2023-264.- Geneva : CERN, 2023 - 32 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-16
09:57
Observation of abnormal suppression of ${\rm f_0(980)}$ production in p$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al.
The dependence of $\mathrm{f}_{0}$(980) production on the final-state charged-particle multiplicity in p$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV is reported. The production of $\mathrm{f}_{0}$(980) is measured with the ALICE detector via the $\mathrm{f}_0 (980) \rightarrow \pi^{+}\pi^{-}$ decay channel in a midrapidity region of $-0.5<y<0$. [...]
arXiv:2311.11786; CERN-EP-2023-263.- Geneva : CERN, 2023 - 25 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-10
23:55
Measurement of (anti)alpha production in central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al. /ALICE
In this letter, measurements of (anti)alpha production in central (0-10%) Pb--Pb collisions at a center-of-mass energy per nucleon--nucleon pair of $\sqrt{s_{\rm NN}}$ = 5.02 TeV are presented, including the first measurement of an antialpha transverse-momentum spectrum. Owing to its large mass, (anti)alpha production yields and transverse-momentum spectra are of particular interest because they provide a stringent test of particle production models. [...]
arXiv:2311.11758; CERN-EP-2023-255.- Geneva : CERN, 2023 - 28 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-11-02
15:25
Photoproduction of ${\rm K}^{+} {\rm K}^{−}$ pairs in ultra-peripheral collisions / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al.
${\rm K}^{+} {\rm K}^{−}$ pairs may be produced in photonuclear collisions, either from the decays of photoproduced $\phi (1020)$ mesons, or directly as non-resonant ${\rm K}^{+} {\rm K}^{−}$ pairs. Measurements of ${\rm K}^{+} {\rm K}^{−}$ photoproduction probe the couplings between the $\phi (1020)$ and charged kaons with photons and nuclear targets. [...]
arXiv:2311.11792; CERN-EP-2023-248.- Geneva : CERN, 2023 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-10-04
23:46
Femtoscopic correlations of identical charged pions and kaons in pp collisions at $\sqrt{s}$ = 13 TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al. /ALICE
Collective behavior has been observed in high-energy heavy-ion collisions for several decades. Collectivity is driven by the high particle multiplicities that are produced in these collisions. [...]
arXiv:2310.07509; CERN-EP-2023-229.- Geneva : CERN, 2023 - 31 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-09-26
10:12
Light-flavor particle production in high-multiplicity pp collisions at $\sqrt{s}$ = 13 TeV as a function of transverse spherocity / ALICE Collaboration
Results on the transverse spherocity dependence of light-flavor particle production ($\pi$, K, p, $\phi$, ${\rm K^{*0}}$, ${\rm K}^{0}_{\rm{S}}$, $\Lambda$, $\Xi$) at midrapidity in high-multiplicity pp collisions at $\sqrt{s}$ = 13 TeV were obtained with the ALICE apparatus. The transverse spherocity estimator ($S_{\text{O}}^{p_{\rm T}=1}$) categorizes events by their azimuthal topology. [...]
arXiv:2310.10236; CERN-EP-2023-215.- Geneva : CERN, 2023 - 50 p. Draft (restricted): PDF; Fulltext: PDF;

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2023-09-20
11:18
Charged-particle production as a function of the relative transverse activity classifier in pp, p--Pb, and Pb--Pb collisions at the LHC / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) ; Akindinov, Alexander (Unlisted) et al.
Measurements of charged-particle production in pp, p--Pb, and Pb--Pb collisions in the toward, away, and transverse regions with the ALICE detector are discussed. These regions are defined event-by-event relative to the azimuthal direction of the charged trigger particle, which is the reconstructed particle with the largest transverse momentum ($p_{\mathrm{T}}^{\rm trig}$) in the range $8<p_{\mathrm{T}}^{\rm trig}<15$ GeV$/c$. [...]
arXiv:2310.07490; CERN-EP-2023-212.- Geneva : CERN, 2023 - 27 p. Draft (restricted): PDF; Fulltext: PDF;

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