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ALICE Papers

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2022-03-30
10:00
${\rm W^\pm}$-boson production in p–Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV and Pb–Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration, CERN /ALICE
The production of the ${\rm W^\pm}$ bosons measured in p–Pb collisions at a centre-of-mass energy per nucleon–nucleon collision $\sqrt{s_{\rm NN}} = 8.16$ TeV and Pb–Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV with ALICE at the LHC is presented. The ${\rm W^\pm}$ bosons are measured via their muonic decay channel, with the muon reconstructed in the pseudorapidity region $-4 < \eta_{\rm lab} < -2.5$ with transverse momentum $p_{\rm T}> 10$ GeV/$c$. [...]
arXiv:2204.10640; CERN-EP-2022-076.- Geneva : CERN, 2022 - 30 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-28
16:46
ALICE luminosity determination for Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV / ALICE Collaboration, CERN /ALICE Collaboration
Luminosity determination within the ALICE experiment is based on the measurement, in van der Meer scans, of the cross sections for visible processes involving one or more detectors (visible cross sections). In 2015 and 2018, the Large Hadron Collider provided Pb$-$Pb collisions at a centre-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}} = 5.02$ TeV. [...]
arXiv:2204.10148; CERN-EP-2022-072.- 2022 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-28
11:52
Photoproduction of low-$p_{\rm T}$ J/$\psi$ from peripheral to central Pb$-$Pb collisions at 5.02 TeV / ALICE Collaboration, CERN /ALICE Collaboration
An excess of J/$\psi$ yield at very low transverse momentum ($p_{\rm T} < 0.3$ GeV/$c$), originating from coherent photoproduction, is observed in peripheral and semicentral hadronic Pb$-$Pb collisions at a center-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}} = 5.02$ TeV. The measurement is performed with the ALICE detector via the dimuon decay channel at forward rapidity ($2.5<y<4$). [...]
arXiv:2204.10684; CERN-EP-2022-071.- 2022 - 15 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-28
11:02
Measurement of the production of charm jets tagged with ${\rm D^0}$ mesons in pp collisions at $\sqrt{s}$ = 5.02 and 13 TeV / ALICE Collaboration, CERN /ALICE Collaboration
The measurement of the production of charm jets, identified by the presence of a ${\rm D^0}$ meson in the jet constituents, is presented in proton–proton collisions at centre-of-mass energies of $\sqrt{s}$ = 5.02 and 13 TeV with the ALICE detector at the CERN LHC. The D0 mesons were reconstructed from their hadronic decay ${\rm D^0} \rightarrow {\rm K^-}\pi^+$ and the respective charge conjugate. [...]
arXiv:2204.10167; CERN-EP-2022-070.- 2022 - 26 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
16:52
Dielectron production at midrapidity at low transverse momentum in peripheral and semi-peripheral Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration, CERN /ALICE Collaboration
The first measurement of the ${\rm e}^{+}{\rm e}^{-}$ pair production at low lepton pair transverse momentum ($p_{\rm T,ee}$) and low invariant mass ($m_{\rm ee}$) in non-central Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV at the LHC is presented. The dielectron production is studied with the ALICE detector at midrapidity ($|\eta_{\rm e}| < 0.8$) as a function of invariant mass ($0.4 \leq m_{\rm ee} < 2.7$ GeV/$c^2$) in the 50$-$70% and 70$-$90% centrality classes for $p_{\rm T,ee} < 0.1$ GeV/$c$, and as a function of $p_{\rm T,ee}$ in three $m_{\rm ee}$ intervals in the most peripheral Pb$-$Pb collisions. [...]
arXiv:2204.11732; CERN-EP-2022-068.- 2022 - 19 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
14:45
Multiplicity and rapidity dependence of ${\rm K}^*(892)^0$ and $\phi(1020)$ production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV / ALICE Collaboration, CERN /ALICE Collaboration
The transverse-momentum ($p_{\rm T}$) spectra of ${\rm K}^*(892)^0$ and $\phi(1020)$ measured with the ALICE detector up to $p_{\rm T}$ = 16 GeV/$c$ in the rapidity range $-1.2 < y < 0.3$, in p–Pb collisions at center-of-mass energy per nucleon–nucleon collision $\sqrt{s_{\rm NN}}$ = 5.02 TeV are presented as a function of charged particle multiplicity and rapidity. The measured $p_{\rm T}$ distributions show a dependence on both multiplicity and rapidity at low $p_{\rm T}$ whereas no significant dependence is observed at high $p_{\rm T}$. [...]
arXiv:2204.10263; CERN-EP-2022-067.- 2022 - 19 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
11:51
Measurement of the J/$\psi$ polarization with respect to the event plane in Pb-Pb collisions at the LHC /ALICE Collaboration
The polarization of inclusive J/$\psi$ produced in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV at the LHC was studied by ALICE in the dimuon channel, via the measurement of the angular distribution of its decay products. The study was performed in the rapidity region $2.5<y<4$, for three transverse momentum intervals ($2<p_{\rm T}<4$, $4<p_{\rm T}<6$, $6<p_{\rm T}<10$ GeV/$c$) and as a function of the centrality of the collision for $2<p_{\rm T}<6$ GeV/c. [...]
arXiv:2204.10171; CERN-EP-2022-066.- 2022 - 10 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
11:22
Measurement of beauty-strange meson production in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV via non-prompt $\mathrm{D_s}^{+}$ mesons / ALICE Collaboration, CERN /ALICE Collaboration
The production yields of non-prompt $\mathrm{D_s}^{+}$ mesons, namely $\mathrm{D_s}^{+}$ mesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum ($p_{\rm T}$) at midrapidity ($|y|<0.5$) in central and semi-central Pb$-$Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}=5.02$ TeV with the ALICE experiment at the LHC. The $\mathrm{D_s}^{+}$ mesons and their charge conjugates were reconstructed from the hadronic decay channel $\mathrm{D_s}^{+} \to \phi\pi^+$, with $\phi \to {\rm K}^-{\rm K}^+$, in the $4 < p_{\rm T}<36$ GeV/$c$ and $2 < p_{\rm T}<24$ GeV/$c$ intervals for the 0$-$10% and 30$-$50% centrality classes, respectively. [...]
arXiv:2204.10386; CERN-EP-2022-065.- 2022 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
11:09
Measurement of $\psi$(2S) production as a function of charged-particle pseudorapidity density in pp collisions at $\sqrt{s}$ = 13 TeV and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV with ALICE at the LHC / ALICE Collaboration, CERN /ALICE Collaboration
Charmonium production in pp collisions at center-of-mass energy of $\sqrt{s}$ = 13 TeV and p–Pb collisions at center-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}}$ = 8.16 TeV is studied as a function of charged-particle pseudorapidity density with ALICE. Ground and excited charmonium states (J/$\psi$, $\psi$(2S)) are measured from their dimuon decays in the interval of rapidity in the center-of-mass frame $2.5 < y_{\rm cms} < 4.0$ for pp collisions, and $2.03 < y_{\rm cms} < 3.53$ and $-4.46 < y_{\rm cms} < -2.96$ for p$-$Pb collisions. [...]
arXiv:2204.10253; CERN-EP-2022-064.- 2022 - 16 p. Draft (restricted): PDF; Fulltext: PDF;

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2022-03-24
10:41
First measurement of the $\Lambda$-$\Xi$ interaction in proton-proton collisions at the LHC / ALICE Collaboration, CERN /ALICE Collaboration
The first experimental information on the strong interaction between $\Lambda$ and $\Xi^-$ strange baryons is presented in this Letter. The correlation function of $\Lambda-\Xi^-$ and $\overline{\Lambda}-\overline{\Xi}^{+}$ pairs produced in high-multiplicity proton-proton (pp) collisions at $\sqrt{s}$~=~13~TeV at the LHC is measured as a function of the relative momentum of the pair. [...]
arXiv:2204.10258; CERN-EP-2022-063.- 2022 - 12 p. Draft (restricted): PDF; Fulltext: PDF;

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