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2025-11-18
08:13
Direct-Photon Production and Correlations in Pb–Pb Collisions at ${\sqrt{s_{NN}}=5.02}$ TeV / Kuskov, Vladislav (Moscow Phys. Eng. Inst. ; Kurchatov Inst., Moscow) /ALICE Collaboration
In this overview, the recent results on direct-photon production and correlations in Pb–Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV obtained by the ALICE collaboration are presented. The invariant yields of direct photons have been measured in a wide range of transverse momentum ($p_{T}$) from 0.4 to 16 GeV/$c$ in different centrality classes from central to peripheral collisions. [...]
2025 - 6 p. - Published in : Phys. At. Nucl. 88 (2025) 682-687

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2025-11-18
08:13
The Role of High Temperature Superconductors for a 10 TeV Muon Collider / Mariotto, S (U. Milan (main) ; INFN, Milan) ; Accettura, C (CERN) ; Alfonso, L (INFN, Genoa) ; Balconi, L (U. Milan (main) ; INFN, Milan) ; Bottura, L (CERN) ; Bersani, A (INFN, Genoa) ; Bordini, B (CERN) ; Caiffi, B (INFN, Genoa) ; Fabbri, S (CERN) ; Farinon, S (INFN, Genoa) et al.
The international particle physics community, among various options for developing future high-energy particle colliders and exploring fundamental interactions, considers Muon Colliders (MC) as a significant opportunity to achieve high discovery potential and integrated luminosity compatible with a compact and cost-effective accelerator machine. An international muon collider collaboration (IMCC) has recently been established, following the recommendations of the European Strategy for Particle Physics (ESPP), to develop a conceptual design for a Muon Collider with a 10 TeV center-of-mass energy [...]
2026 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 36 (2026) 1-8 Fulltext: PDF; External link: Fulltext

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2025-11-18
08:13
Performance of the Fast Interaction Trigger (FIT) Detector System for Global Observables at ALICE in RUN 3 / Furs, A (Moscow, INR) ; Sukhanov, M (Moscow, INR ; Moscow Phys. Eng. Inst.) ; Finogeev, D (Moscow, INR) ; Karavicheva, T (Moscow, INR) ; Serebryakov, D (Moscow, INR) ; Vozniuk, N (Moscow, INR ; Moscow Phys. Eng. Inst.) /ALICE Collaboration
The primary purpose of the ALICE experiment at the Large Hadron Collider is to study the properties of nuclear matter at extremely high temperatures and energy density produced by relativistic nucleus–nucleus collisions. During the Long Shutdown 2 (2019–2022), new detectors were incorporated into the ALICE setup, including the Fast Interaction Trigger (FIT). [...]
2025 - 7 p. - Published in : Phys. At. Nucl. 88 (2025) 675-681

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2025-11-18
08:01
Hyperon global polarization in isobar Ru+Ru and Zr+Zr collisions at <math altimg="si15.svg"><mrow><msqrt><msub><mi>s</mi><msub><mrow/><mrow><mrow><mi mathvariant="normal">N</mi></mrow><mi>N</mi></mrow></msub></msub></msqrt><mo linebreak="goodbreak">=</mo><mn>200</mn><mrow><mrow><mi mathvariant="normal">G</mi></mrow><mi>e</mi><mi>V</mi></mrow></mrow></math> / ATLAS Collaboration
The polarization of Lambda, Anti-Lambda, Xi, and Anti-Xi hyperons along the angular momentum of the system has been measured in isobar collisions of Ru+Ru and Zr+Zr at $\sqrt{s_{NN}}$ = 200 GeV with the STAR detector at RHIC. The polarization dependence on collision centrality is explored and found to show an increasing trend in more peripheral collisions. [...]
arXiv:2505.05046.- 2025-10-01 - 9 p. - Published in : Phys. Lett. B 870 (2025) 139891 Fulltext: PDF;

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2025-11-18
07:48
Towards metrology with highly charged isomeric ions from antiproton annihilation / Alfaro, Sara (Innsbruck U., Inst. Astrophys.) ; Panzl, Lorenz (Innsbruck U., Inst. Astrophys.) ; Faorlin, Tommaso (Innsbruck U., Inst. Astrophys.) ; Weiser, Yannick (Innsbruck U., Inst. Astrophys.) ; Lafenthaler, Thomas (Innsbruck U., Inst. Astrophys.) ; Monz, Thomas (Innsbruck U., Inst. Astrophys.) ; Gustafsson, Fredrik Parnefjord (CERN) ; Germann, Matthias (CERN) ; Doser, Michael (CERN) ; Zieliński, Jakub (Warsaw U. of Tech.) et al.
We describe how the annihilation of antiprotons can be utilized to generate highly charged isomeric ions in an ion-trap setup. We identify optical transitions in the hyperfine splitting of Hydrogen-like atoms composed of an isomer and a single electron in the ground state. [...]
arXiv:2502.12832.- 2025-11-13 - 12 p. - Published in : J. Phys. A 58 (2025) 215002 Fulltext: 2502.12832 - PDF; document - PDF;

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2025-11-15
09:02
First measurement of antiproton cross-section in p-He collisions at the AMBER Experiment at CERN / Giordano, D (INFN, Turin) /AMBER Collaboration
One of the indirect detection methods of dark matter (DM) is based on the search of the products of DM annihilation or decay. They should appear as distortions in the gamma rays spectra and in the rare Cosmic Ray (CR) components, like antiprotons, positrons and antideuterons. [...]
2025 - 4 p. - Published in : Nuovo Cimento C 48 (2025) 198 Fulltext: PDF;
In : 110th Congresso Nazionale della Societa Italiana di Fisica (SIF 2024), Rome, Italy, 11-13 Sep 2024, pp.198

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2025-11-15
09:01
Status of the Geant4 models for nuclear de-excitation / Chalyi, Nikita (Tomsk State U.) ; Diederichs, Severin (CERN) ; Ivantchenko, Vladimir (Tomsk State U. ; CERN) /Geant4 hadronic working group Collaboration
The Geant4 hadronic physics sub-library includes an extended set of models for highand low-energy hadronic interactions. We report on recent developments in the Geant4 nuclear de-excitation module, which is used by many Geant4 models to simulate the de-excitation of nuclear recoils produced in nuclear reactions. [...]
2025 - 6 p. - Published in : EPJ Web Conf. 337 (2025) 01305 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01305

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2025-11-15
09:01
CMS FlashSim: End-to-end simulation with Machine Learning / Rizzi, Andrea (Pisa U. ; INFN, Pisa) ; Vaselli, Francesco (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Cattafesta, Filippo (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Asenov, Patrick (Pisa U. ; INFN, Pisa) /CMS Collaboration
Detailed event simulation at the LHC is taking a large fraction of computing budget. CMS developed an end-to-end ML based simulation that can speed up the time for production of analysis samples of several orders of magnitude with a limited loss of accuracy. [...]
2025 - 12 p. - Published in : EPJ Web Conf. 337 (2025) 01014 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01014

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2025-11-15
09:01
Prévessin Data Centre Powers Up / Dupuis, Max (CERN)
CERN’s state-of-the-art Prévessin Data Centre (PDC) is now operational, complementing CERN’s Meyrin Data Centre Tier-0 facility to provide additional and sustainable computing power to meet the needs of High-Luminosity LHC in 2029 (expected to be ten times greater than today). In 2019, it was decided to tender the design and construction of a new, modern, energy-efficient (PUE of ≤ 1.15) Data Centre with a total of 12 MW IT capacity spread across six IT rooms. [...]
2025 - 10 p. - Published in : EPJ Web Conf. 337 (2025) 01148 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01148

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2025-11-15
09:01
Anomaly Detection in the CMS L1 Trigger / Quinnan, Melissa (UC, San Diego) /CMS Collaboration
We present the preparation, deployment, and testing of an autoen-coder trained for unbiased detection of new physics signatures in the CMS experiment Global Trigger (GT) test crate FPGAs during LHC Run 3. The GT makes the final decision whether to readout or discard the data from each LHC collision, which occur at a rate of 40 MHz, within a 50 ns latency. [...]
2025 - 6 p. - Published in : EPJ Web Conf. 337 (2025) 01032 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01032

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