CERN Accelerating science

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1.
Performance of the ALICE Electromagnetic Calorimeter / ALICE Collaboration
The performance of the electromagnetic calorimeter of the ALICE experiment during operation in 2010$-$2018 at the Large Hadron Collider is presented. After a short introduction into the design, readout, and trigger capabilities of the detector, the procedures for data taking, reconstruction, and validation are explained. [...]
arXiv:2209.04216; CERN-EP-2022-184.- Geneva : CERN, 2023-08-10 - 139 p. - Published in : JINST 18 (2023) P08007 Draft (restricted): PDF; Fulltext: document - PDF; 2209.04216 - PDF;
2.
Charged jet cross section and fragmentation in proton-proton collisions at $\sqrt{s}$ = 7 TeV / ALICE Collaboration
We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a centre-of-mass energy $\sqrt{s}$ = 7 TeV. Jets with pseudo-rapidity $|\eta|<0.5$ are reconstructed from charged particles using the anti-$k_{T}$ jet finding algorithm with a resolution parameter $R$ = 0.4. [...]
arXiv:1809.03232; CERN-EP-2018-235.- Geneva : CERN, 2019-02-01 - 16 p. - Published in : Phys. Rev. D 99 (2019) 012016 Draft (restricted): PDF; Fulltext: PDF; Fulltext from Publisher: PDF;
3.
Medium modification of the shape of small-radius jets in central Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV / ALICE Collaboration
We present the measurement of a new set of jet shape observables for track-based jets in central Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV. The set of jet shapes includes the first radial moment or angularity, $g$; the momentum dispersion, $p_{\rm{T}}D$; and the difference between the leading and sub-leading constituent track transverse momentum, $LeSub$. [...]
arXiv:1807.06854; CERN-EP-2018-201.- Geneva : CERN, 2018-10-22 - 26 p. - Published in : JHEP 10 (2018) 139 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: 1807.06854 - PDF; arXiv:1807.06854 - PDF;
4.
Measurement of dielectron production in central Pb-Pb collisions at $\sqrt{{\textit{s}}_{\mathrm{NN}}}$ = 2.76 TeV / ALICE Collaboration
The first measurement of dielectron ($\mathrm{e}^{+}\mathrm{e}^{-}$) production in central (0$-$10$\%$) Pb--Pb collisions at a center-of-mass energy per nucleon pair $\mathbf{\sqrt{{\textit{s}}_{\mathrm{NN}}}}$ = 2.76 TeV at the LHC is presented. The dielectron invariant-mass spectrum is measured in the ALICE central barrel detectors for electrons with pseudorapidity $|\eta_{\mathrm{e}}|<0.8$ and transverse momentum $0.4 < p_{\mathrm{T}, \mathrm{e}} < 5$ GeV/$\textit{c}$. [...]
arXiv:1807.00923; CERN-EP-2018-181.- Geneva : CERN, 2019-02-15 - 23 p. - Published in : Phys. Rev. C 99 (2019) 024002 Draft (restricted): PDF; Fulltext: PDF;
5.
p-p, p-$\Lambda$ and $\Lambda$-$\Lambda$ correlations studied via femtoscopy in pp reactions at $\sqrt{s}$ = 7 TeV / ALICE Collaboration
We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-$\Lambda$ and $\Lambda$-$\Lambda$, measured by ALICE at the Large Hadron Collider (LHC) in proton-proton collisions at $\sqrt{s}$ = 7 TeV This study demonstrates the feasibility of such measurements in pp collisions at ultrarelativistic energies. The femtoscopy method is employed to constrain the hyperon-nucleon and hyperon-hyperon interactions, which are still rather poorly understood. [...]
arXiv:1805.12455; CERN-EP-2018-150.- Geneva : CERN, 2019-02-14 - 21 p. - Published in : Phys. Rev. C 99 (2019) 024001 Draft (restricted): PDF; Fulltext: PDF;
6.
Dielectron and heavy-quark production in inelastic and high-multiplicity proton-proton collisions at $\sqrt{s} = 13$ TeV / ALICE Collaboration
The measurement of dielectron production is presented as a function of invariant mass and transverse momentum ($p_{\rm T}$) at midrapidity ($|y_{\rm e}|<0.8$) in proton-proton (pp) collisions at a centre-of-mass energy of $\sqrt{s}=13$ TeV. The contributions from light-hadron decays are calculated from their measured cross sections in pp collisions at $\sqrt{s}=7$ TeV or 13 TeV. [...]
arXiv:1805.04407; CERN-EP-2018-122.- Geneva : CERN, 2019-01-10 - 14 p. - Published in : Phys. Lett. B 788 (2019) 505-518 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
7.
Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe-Xe collisions at $\sqrt{s_{\rm NN}}$ = 5.44 TeV / ALICE Collaboration
In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, $dN_{ch}/d\eta$, and total charged-particle multiplicity, $N_{ch}^{tot}$, in Xe–Xe collisions at a centre-of-mass energy per nucleon-nucleon pair of $\sqrt{s_{NN}}$ = 5.44 TeV. The measurements are performed as a function of collision centrality over a wide pseudorapidity range of −3.5 < $\eta$ < 5. [...]
arXiv:1805.04432; CERN-EP-2018-120.- Geneva : CERN, 2019-03-10 - 14 p. - Published in : Phys. Lett. B 790 (2019) 35-48 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
8.
Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in $p$-Pb Collisions at $ \sqrt{s_{\rm NN}}$ = 5.02 TeV / ALICE Collaboration
Angular correlations between heavy-flavour decay electrons and charged particles at mid-rapidity (|$\eta$| < 0.8) are measured in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. The analysis is carried out for the 0-20% (high) and 60-100% (low) multiplicity ranges. [...]
arXiv:1805.04367; CERN-EP-2018-119.- Geneva : CERN, 2019-02-22 - 13 p. - Published in : Phys. Rev. Lett. 122 (2019) 072301 Draft (restricted): PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext text from Publisher: PDF;
9.
Two particle differential transverse momentum and number density correlations in p-Pb and Pb-Pb at the LHC / ALICE Collaboration
Measurements of two-particle differential number correlation functions $R_{2}$ and transverse momentum correlation functions $P_{2}$, obtained from p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV and Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV, are presented. Measurements are reported for charged particles in the pseudorapidity range |$\eta$| < 1.0, and transverse momentum range 0.2 < $p_{T}$ < 2.0 GeV/$c$ as a function of pair separation in pseudorapidity, |$\Delta\eta$|, azimuthal angle, $\Delta\phi$, and for several charged-particle multiplicity classes. [...]
arXiv:1805.04422; CERN-EP-2018-118.- Geneva : CERN, 2019-10-11 - 59 p. - Published in : Phys. Rev. C 100 (2019) 044903 Draft (restricted): PDF; Fulltext: PhysRevC.100.044903 - PDF; 1805.04422 - PDF; External link: Preprint
10.
Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV / ALICE Collaboration
The elliptic flow of inclusive and direct photons was measured at mid-rapidity in two centrality classes 0-20% and 20-40% in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV by ALICE. Photons were detected with the highly segmented electromagnetic calorimeter PHOS and via conversions in the detector material with the $e^{+}e^{-}$ pairs reconstructed in the central tracking system. [...]
arXiv:1805.04403; CERN-EP-2018-117.- Geneva : CERN, 2019-02-10 - 15 p. - Published in : Phys. Lett. B 789 (2019) 308-322 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;

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