2025-11-13
07:10 |
The future ability to test theories of gravity with black-hole shadows
/ Uniyal, Akhil (Shanghai Jiao Tong U.) ; Dihingia, Indu K (Shanghai Jiao Tong U.) ; Mizuno, Yosuke (Shanghai Jiao Tong U. ; Shanghai Jiaotong U. ; Frankfurt U.) ; Rezzolla, Luciano (Frankfurt U. ; CERN ; Trinity Coll., Dublin)
The horizon-scale images of supermassive black holes (BHs) by the Event Horizon Telescope Collaboration (EHT) have provided new opportunities to test general relativity and other theories of gravity. In view of future projects, such as the next-generation Event Horizon Telescope (ngEHT) and the Black-Hole Explorer (BHEX), having the potential of enhancing our ability to probe extreme gravity, it is natural to ask: \textit{how much can two black-hole images differ?} To address this question and assess the ability of these projects to test theories of gravity with black-hole shadows, we use general-relativistic magnetohydrodynamic and radiative-transfer simulations to investigate the images of a wide class of accreting BHs deviating from the Kerr solution. [...]
arXiv:2511.03789.-
2025 - 28 p.
- Published in : Nature Astron. 1 (2025) 8
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2025-11-13
07:10 |
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2025-11-13
07:10 |
Studies on the fluoride production from gaseous detectors operated with fluorinated gas mixtures
/ Arena, Maria Cristina (U. Pavia (main)) ; Dondi, Daniele (U. Pavia (main)) ; Guida, Roberto (CERN) ; Mandelli, Beatrice (CERN) ; Profumo, Antonella (U. Pavia (main)) ; Rigoletti, Gianluca (CERN) ; Verzeroli, Mattia (IP2I, Lyon) ; Juks, Stefania-Alexandra (U. Paris-Saclay)
In the context of particle physics, different families of gaseous detectors are operated with fluorinated-gases which may break and form, among other species, free fluorine ions. Such species may react with water molecules present in the gas, leading to the formation of HF that could affect the long term performance of the detector (Capeans et al., 2010). [...]
2025 - 6 p.
In : 3rd International Conference on Detector Stability and Aging Phenomena in Gaseous Detectors, CERN, Geneva, Switzerland, 6 - 10 Nov 2023, pp.170926
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2025-11-12
05:04 |
LHC as an Axion-Photon Collider
/ Barbosa, Sergio (ABC Federal U.) ; Coelho, Matheus (ABC Federal U.) ; Fichet, Sylvain (ABC Federal U.) ; da Silveira, Gustavo Gil (Unlisted, BR ; CERN) ; Machado, Magno (Rio Grande do Sul U., Porto Alegre (main))
Assuming the existence of an axion-like particle (ALP), beams of relativistic particles emit fluxes of quasi-real ALPs, analogous to the photon fluxes described by Weizsäcker-Williams-type approximations. Consequently, ALP-ALP and ALP-photon collisions can occur at the LHC. [...]
arXiv:2506.10066.-
2025-10-30 - 7 p.
- Published in : Phys. Rev. Lett. 135 (2025) 181801
Fulltext: 2506.10066 - PDF; document - PDF;
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2025-11-12
04:59 |
Isospin-violating vacuum polarization in the muon (g − 2) with SU(3) flavour symmetry from lattice QCD
/ Erb, Dominik (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Gérardin, Antoine (Marseille, CPT) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Mainz U., Inst. Kernphys. ; CERN) ; Parrino, Julian (Regensburg U.) ; Biloshytskyi, Volodymyr (Mainz U., Inst. Kernphys. ; Marseille, CPT) ; Pascalutsa, Vladimir (Mainz U., Inst. Kernphys.)
We compute the isospin-violating part $a_μ^{\text{HVP}, 38}$ of the hadronic-vacuum-polarization (HVP) contribution to the muon $(g-2)$ in lattice QCD at the SU$(3)_{\rm f}$-symmetric point where $M_π=M_K\simeq 416$ MeV. All diagrams involving internal photons are evaluated in coordinate space, employing a Pauli-Villars-regulated photon propagator with a cutoff scale $Λ$ well below the lattice cutoff. [...]
arXiv:2505.24344.-
2025-10-17 - 45 p.
- Published in : JHEP 2510 (2025) 157
Fulltext: 2505.24344 - PDF; document - PDF;
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2025-11-11
07:44 |
Field Quality of the Series of Short Orbit Nested Corrector Magnets for HL-LHC
/ Domínguez, M (Madrid, CIEMAT) ; Durán, O (Madrid, CIEMAT) ; García, J (Madrid, CIEMAT) ; García-Matos, J A (Madrid, CIEMAT ; Comillas Pontifical U.) ; García-Tabarés, L (Madrid, CIEMAT) ; González, Luis (Madrid, CIEMAT) ; López, R (Madrid, CIEMAT) ; Martínez, T (Madrid, CIEMAT) ; Jardim, C Martins (Madrid, CIEMAT) ; Pérez, J M (Madrid, CIEMAT) et al.
2026 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 36 (2026) 4001005
Fulltext: PDF; External link: Fulltext
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2025-11-09
12:03 |
Edge SpAIce: Deep Learning Deployment Pipeline for Onboard Data Reduction on Satellite FPGAs
/ D’Abbondanza, Noemi (U. Camerino (main) ; Italian Inst. Tech., Genoa) ; Tzelepis, Stylianos (CERN ; Natl. Tech. U., Athens) ; Ghielmetti, Nicolò (CERN) ; Kakogeorgiou, Ioannis (Natl. Tech. U., Athens) ; Buchova, Vanya (Unlisted, BG) ; Karantzalos, Konstantinos (Natl. Tech. U., Athens) ; Kikaki, Katerina (Natl. Tech. U., Athens ; Unlisted, GR) ; Lemoine, Nicolas-Marcel (Unlisted, FR) ; Pierini, Maurizio (CERN) ; Summers, Sioni (CERN) et al.
Earth Observation satellites are essential for monitoring global phenomena. However, their potential is often constrained by limited downlink bandwidth and ground-based processing capabilities. [...]
2025 - 7 p.
- Published in : IEEE IPDPSW 25 (2025) 1243-1249
In : 39th IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW 2025), Milan, Italy, 3 - 7 June 2025, pp.1243-1249
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2025-11-09
12:03 |
Learning to Predict Network Paths: A Transformer Model with Confidence-Based Imputation
/ Vasileva, Petya (U. Michigan, Ann Arbor ; Plovdiv U. (main)) ; Babik, Marian (CERN) ; McKee, Shawn (U. Michigan, Ann Arbor) ; Vukotic, Ilija (U. Chicago (main))
The research and education community relies on a robust network to access the vast amounts of data generated by scientific experiments. The underlying infrastructure connects hundreds of sites around the world, requiring reliable and efficient transfers of increasingly large datasets. [...]
2025 - 8 p.
- Published in : EPJ Web Conf. 337 (2025) 01115
Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01115
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2025-11-09
12:02 |
Enhanced sensitivity for electron affinity measurements of rare elements
/ Maier, F M (Greifswald U. ; CERN ; TRIUMF ; Michigan State U.) ; Leistenschneider, E (CERN ; LBNL, NSD) ; Au, M (CERN) ; Bērziņš, U (Latvia U.) ; Gracia, Y N Vila (CERN) ; Hanstorp, D (U. Gothenburg (main)) ; Kanitz, C (CERN) ; Lagaki, V (Greifswald U. ; CERN) ; Lechner, S (CERN) ; Leimbach, D (CERN ; U. Gothenburg (main)) et al.
Abstract
The electron affinity (EA), the energy released when a neutral atom binds an additional electron, is a fundamental property of atoms that is governed by electron-electron correlations and is strongly related to an element’s chemical reactivity. However, conventional techniques for EA determination lack the experimental sensitivity to probe very scarce samples [...]
2025 - 12 p.
- Published in : Nature Commun. 16 (2025) 9576
Fulltext: PDF; External link: Interactions.org article
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2025-11-09
12:02 |
RF design and optimization of the high-energy linac for the FCC-ee injector complex
/ Kurtulus, A (CERN ; ETH, Zurich (main)) ; Grudiev, A (CERN) ; Latina, A (CERN) ; Bettoni, S (PSI, Villigen) ; Craievich, P (PSI, Villigen) ; Raguin, J -Y (PSI, Villigen)
The high-energy linac of the Future Circular Collider electron-positron (FCC-ee) injector complex requires high-performance rf accelerating structures to efficiently accelerate beams up to 20 GeV while ensuring operational stability. This study presents an analytical approach to the rf design of traveling-wave structures, incorporating a pulse compression system to enhance power efficiency and meet the demanding FCC-ee specifications. [...]
2025 - 11 p.
- Published in : Phys. Rev. Accel. Beams 28 (2025) 101601
publication: PDF;
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