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1.
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The high voltage system of the novel MPGD-based photon detectors of COMPASS RICH-1 and its development towards a scalable High Voltage Power Supply System for MPGDs
/ Bressan, A (INFN, Trieste ; Trieste U.) ; Carrato, S (INFN, Trieste ; Trieste U.) ; Chatterjee, C (INFN, Trieste) ; Cicuttin, A (ICTP, Trieste ; INFN, Trieste) ; Crespo, M L (ICTP, Trieste ; INFN, Trieste) ; D'Ago, D (INFN, Trieste ; Trieste U.) ; Dalla Torre, S (INFN, Trieste) ; Dasgupta, S (INFN, Trieste ; Bhubaneswar, NISER) ; Ballina E , M G (ICTP, Trieste) ; Florian S , W (ICTP, Trieste ; INFN, Trieste ; Trieste U.) et al.
The COMPASS RICH-1 detector has undergone a major upgrade in 2016 with the installation of four novel MPGD-based photon detectors. They consist of large-size hybrid MPGDs with multi-layer architecture composed of two layers of Thick-GEMs and bulk resistive MicroMegas. [...]
2023 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1056 (2023) 168558
In : 11th International Workshop on Ring Imaging Cherenkov Detectors (RICH 2022), Edinburgh, United Kingdom, 12 - 16 Sep 2022, pp.168558
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2.
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The COMPASS RICH-1 MPGD based photon detector performance
/ Agarwala, J (ICTP, Trieste ; INFN, Pavia ; Pavia U.) ; Alexeev, M (INFN, Turin) ; Azevedo, C D R (Aveiro U.) ; Bradamante, F (Trieste U. ; INFN, Trieste) ; Bressan, A (Trieste U. ; INFN, Trieste) ; Büchele, M (Freiburg U.) ; Chatterjee, C (Trieste U. ; INFN, Trieste) ; Chiosso, M (INFN, Turin ; Turin U.) ; Cicuttin, A (ICTP, Trieste) ; Ciliberti, P (INFN, Trieste) et al.
In 2016 we have upgraded the COMPASS RICH by novel gaseous photon detectors based on MPGD technology. Four new photon detectors, covering a total active area of 1.5 m
$^{2}$, have been installed in order to cope with the challenging efficiency and stability requirements of the COMPASS physics programme. [...]
2022 - 5 p.
- Published in : J. Phys. : Conf. Ser. 2374 (2022) 012126
Fulltext: PDF;
In : International Conference on Technology and Instrumentation in Particle Physics (TIPP 2021), Online, Canada, 24 - 29 May 2021, pp.012126
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3.
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Correction of the baseline fluctuations in the GEM-based ALICE TPC
/ ALICE TPC Collaboration
To operate the ALICE Time Projection Chamber in continuous mode during the Run~3 and Run~4 data-taking periods of the Large Hadron Collider, the multi-wire proportional chamber-based readout was replaced with gas-electron multipliers. As expected, the detector performance is affected by the so-called common-mode effect, which leads to significant baseline fluctuations. [...]
arXiv:2304.03881.-
2023-11-24 - 30 p.
- Published in : JINST 18 (2023) P11021
Fulltext: 2304.03881 - PDF; document - PDF;
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4.
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Measurement of prompt $\rm{D_{s}^{+}}$-meson production and azimuthal anisotropy in Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV
/ ALICE Collaboration
The production yield and angular anisotropy of prompt ${D_s^+}$ mesons were measured as a function of transverse momentum ($p_{ T}$) in Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{ NN}} = 5.02$ TeV collected with the ALICE detector at the LHC. ${D_s^+}$ mesons and their charge conjugates were reconstructed at midrapidity ($|y|<0.5$) from their hadronic decay channel ${D_s^+ \to \phi \pi^+}$, with ${\phi \to K^-K^+}$, in the $p_{ T}$ intervals $210$ GeV/$c$, the measured ${D_s^+}$-meson nuclear modification factor $R_{ AA}$ is consistent with the one of non-strange D mesons within uncertainties, while at lower $p_{ T}$ a hint for a ${D_s^+}$-meson $R_{ AA}$ larger than that of non-strange D mesons is seen. [...]
arXiv:2110.10006; CERN-EP-2021-187.-
Geneva : CERN, 2022-04-10 - 29 p.
- Published in : Phys. Lett. B 827 (2022) 136986
Draft (restricted): PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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5.
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Investigating charm production and fragmentation via azimuthal correlations of prompt D mesons with charged particles in pp collisions at $\mathbf{\sqrt{\it s} = 13}$ TeV
/ Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; 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) et al.
Angular correlations of heavy-flavour and charged particles in high-energy proton-proton collisions are sensitive to the production mechanisms of heavy quarks and to their fragmentation as well as hadronisation processes. The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in proton--proton collisions at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ALICE detector is reported, considering D$^{0}$, D$^{+}$, and D$^{*+}$ mesons in the transverse-momentum interval $3 < p_{\rm T} < 36$ GeV/$c$ at midrapidity ($|y| < 0.5$), and charged particles with $p_{\rm T} > 0.3$ GeV/$c$ and pseudorapidity $|\eta| < 0.8$. [...]
arXiv:2110.10043; CERN-EP-2021-184.-
Geneva : CERN, 2022-04-19 - 33 p.
- Published in : Eur. Phys. J. C 82 (2022) 335
Draft (restricted): PDF; Fulltext: 2110.10043 - PDF; document - PDF;
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6.
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Inclusive $\text {J}/\psi $ production at midrapidity in pp collisions at $\sqrt{s} = 13$ TeV
/ ALICE Collaboration
We report on the inclusive J/ψ production cross section measured at the CERN Large Hadron Collider in proton–proton collisions at a centre-of-mass energy s = 13 TeV. The J/ψ mesons are reconstructed in the e+e− decay channel and the measurements are performed at midrapidity (|y| < 0.9) in the transverse-momentum interval 0 < pT < 40 GeV/c, using a minimum-bias data sample corresponding to an integrated luminosity Lint = 32.2 nb−1 and an Electromagnetic Calorimeter triggered data sample with Lint = 8.3 pb−1. [...]
arXiv:2108.01906; CERN-EP-2021-160.-
Geneva : CERN, 2021-12-21 - 25 p.
- Published in : Eur. Phys. J. C 81 (2021) 1121
Draft (restricted): PDF; Fulltext: 2108.01906 - PDF; document - PDF;
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7.
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8.
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9.
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Anisotropic flow of identified hadrons in Xe-Xe collisions at $ \sqrt{s_{\mathrm{NN}}} $ = 5.44 TeV
/ ALICE Collaboration
Measurements of elliptic ($v_{2}$) and triangular ($v_{3}$) flow coefficients of $\pi^{\pm}$, K$^{\pm}$, p+$\overline{\rm p}$, K$^{0}_{S}$, and $\Lambda$+$\overline{\Lambda}$ obtained with the scalar product method in Xe$-$Xe collisions at $\sqrt{s_{\rm NN}} = 5.44$ TeV are presented. The results are obtained in the rapidity range |y| < 0.5 and reported as a function of transverse momentum, $p_{\rm T}$, for several collision centrality classes. [...]
arXiv:2107.10592; CERN-EP-2021-149.-
Geneva : CERN, 2021-10-23 - 36 p.
- Published in : JHEP 2110 (2021) 152
Draft (restricted): PDF; Fulltext: 2107.10592 - PDF; document - PDF;
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10.
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Polarization of $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam direction in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
/ Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; 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.) et al.
The polarization of the $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam ($z$) direction, $P_{z}$, has been measured in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The largest contribution to $P_z$ comes from elliptic flow induced vorticity and can be characterized by the second Fourier sine coefficient $P_{z,s2}$ = $⟨P_z sin(2 \varphi − 2 \Psi_2 )⟩$, where $\varphi$ is the hyperon azimuthal emission angle, and $\Psi_2$ is the elliptic flow plane angle. [...]
arXiv:2107.11183; CERN-EP-2021-148.-
Geneva : CERN, 2022-04-29 - 18 p.
- Published in : Phys. Rev. Lett. 128 (2022) 172005
Draft (restricted): PDF; Fulltext: PDF;
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