CERN Accelerating science

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1.
ALICE upgrades during the LHC Long Shutdown 2 / ALICE Collaboration
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. [...]
arXiv:2302.01238; CERN-EP-2023-009.- Geneva : CERN, 2024-05-23 - 159 p. - Published in : JINST 19 (2024) P05062 Draft (restricted): PDF; Fulltext: 2302.01238 - PDF; document - PDF;
In : The Large Hadron Collider and The Experiments for Run 3
2.
First demonstration of in-beam performance of bent Monolithic Active Pixel Sensors / ALICE ITS project Collaboration
A novel approach for designing the next generation of vertex detectors foresees to employ wafer-scale sensors that can be bent to truly cylindrical geometries after thinning them to thicknesses of 20-40$\mu$m. To solidify this concept, the feasibility of operating bent MAPS was demonstrated using 1.5$\times$3cm ALPIDE chips. [...]
arXiv:2105.13000.- 2022-04-01 - 14 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1028 (2022) 166280 Fulltext: PDF;
3.
Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at $\sqrt{s}=$ 0.9, 7, and 8 TeV / ALICE Collaboration
We present the charged-particle multiplicity distributions over a wide pseudorapidity range ($-3.4<\eta<5.0$) for pp collisions at $\sqrt{s}=$ 0.9, 7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector and the Forward Multiplicity Detector of ALICE, extending the pseudorapidity coverage of the earlier publications and the high-multiplicity reach. [...]
arXiv:1708.01435; CERN-EP-2017-192.- Geneva : CERN, 2017-12-09 - 28 p. - Published in : Eur. Phys. J. C 77 (2017) 852 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
4.
Measurement of deuteron spectra and elliptic flow in Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV at the LHC / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adolfsson, Jonatan (Lund U.) ; Aggarwal, Madan Mohan (Panjab U.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (Indian Inst. Tech., Mumbai) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Nazeer (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) et al. /ALICE
The transverse momentum ($p_{\rm T}$) spectra and elliptic flow coefficient ($v_2$) of deuterons and anti-deuterons at mid-rapidity ($|y|<0.5$) are measured with the ALICE detector at the LHC in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV. The measurement of the $p_{\rm T}$ spectra of (anti-)deuterons is done up to 8 GeV/$c$ in 0-10% centrality class and up to GeV/$c$ in 10-20% and 20-40% centrality classes. [...]
arXiv:1707.07304; CERN-EP-2017-176.- Geneva : CERN, 2017-10-04 - 27 p. - Published in : Eur. Phys. J. C 77 (2017) 658 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
5.
D-meson azimuthal anisotropy in mid-central Pb-Pb collisions at $\mathbf{\sqrt{s_{\rm NN}}=5.02}$ TeV / ALICE Collaboration
The azimuthal anisotropy coefficient $v_2$ of prompt D$^0$, D$^+$, D$^{*+}$ and D$_s^+$ mesons was measured in mid-central (30-50% centrality class) 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 mesons were reconstructed via their hadronic decays at mid-rapidity, $|y|<0.8$, in the transverse momentum interval $1<p_{\rm T}<24$ GeV/$c$. [...]
arXiv:1707.01005; CERN-EP-2017-153.- Geneva : CERN, 2018-03-09 - 13 p. - Published in : Phys. Rev. Lett. 120 (2018) 102301 Draft (restricted): PDF; Fulltext: PDF; Fulltext from Publisher: PDF;
6.
Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC / ALICE Collaboration
The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at $\sqrt{s_{\rm NN}}=$ 2.76 TeV and p-Pb collisions at $\sqrt{s_{\rm NN}}=$ 5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. These correlations are measured for the second, third and fourth order flow vector in the pseudorapidity region $|\eta|<0.8$ as a function of centrality and transverse momentum $p_{\rm T}$ using two observables, to search for evidence of $p_{\rm T}$-dependent flow vector fluctuations. [...]
arXiv:1707.05690; CERN-EP-2017-149.- Geneva : CERN, 2017-09-08 - 30 p. - Published in : JHEP 09 (2017) 032 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
7.
A novel source–drain follower for monolithic active pixel sensors / Gao, C (CCNU, Wuhan, Inst. Part. Phys.) ; Aglieri, G (CERN) ; Hillemanns, H (CERN) ; Huang, G (CCNU, Wuhan, Inst. Part. Phys.) ; Junique, A (CERN) ; Keil, M (CERN) ; Kim, D (Dongguk U. ; Yonsei U.) ; Kofarago, M (CERN) ; Kugathasan, T (CERN) ; Mager, M (CERN) et al.
Monolithic active pixel sensors (MAPS) receive interest in tracking applications in high energy physics as they integrate sensor and readout electronics in one silicon die with potential for lower material budget and cost, and better performance. Source followers (SFs) are widely used for MAPS readout: they increase charge conversion gain 1/ C eff or decrease the effective sensing node capacitance C eff because the follower action compensates part of the input capacitance. [...]
2016 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 831 (2016) 147-155
In : 10th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors, Xi'an, China, 25 - 29 Sep 2015, pp.147-155
8.
Linear and non-linear flow modes in Pb-Pb collisions at $\sqrt{s_{\rm NN}} =$ 2.76 TeV / ALICE Collaboration
The second and the third order anisotropic flow, $V_{2}$ and $V_3$, are mostly determined by the corresponding initial spatial anisotropy coefficients, $\varepsilon_{2}$ and $\varepsilon_{3}$, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, $V_n$ ($n > 3$), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. [...]
arXiv:1705.04377; CERN-EP-2017-103.- Geneva : CERN, 2017-10-10 - 13 p. - Published in : Phys. Lett. B 773 (2017) 68-80 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
9.
Measuring K$^0_{\rm S}$K$^{\rm \pm}$ interactions using Pb-Pb collisions at ${\sqrt{s_{\rm NN}}=2.76}$ TeV / ALICE Collaboration
We present the first ever measurements of femtoscopic correlations between the K$^0_{\rm S}$ and K$^{\rm \pm}$ particles. The analysis was performed on the data from Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV measured by the ALICE experiment. [...]
arXiv:1705.04929; CERN-EP-2017-063.- Geneva : CERN, 2017-11-10 - 14 p. - Published in : Phys. Lett. B 774 (2017) 64-77 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;
10.
J/$\psi$ production as a function of charged-particle pseudorapidity density in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
We report measurements of the inclusive J/$\psi$ yield and average transverse momentum as a function of charged-particle pseudorapidity density ${\rm d}N_{\rm ch}/{\rm d}\eta$ in p-Pb collisions at $\sqrt{s_{\rm NN}}= 5.02$ TeV with ALICE at the LHC. The observables are normalised to their corresponding averages in non-single diffractive events. [...]
arXiv:1704.00274; CERN-EP-2017-056.- Geneva : CERN, 2018-01-10 - 14 p. - Published in : Phys. Lett. B 776 (2018) 91-104 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF;

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