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2025-07-30
06:20
Measurement of the W boson decay branching fraction ratio B(W→cq)/B(W→qq¯′) in proton-proton collisions at s=13TeV /CMS Collaboration
The most precise measurement to date of the Image 1 boson hadronic decay branching fraction ratio Image 2 is presented. The measurement is based on a sample of proton-proton collision data from the CERN LHC collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 with an integrated luminosity of 138fb−1. [...]
2025 - 28 p. - Published in : Phys. Lett. B 868 (2025) 139754 Fulltext: PDF;

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2025-07-25
06:02
Coherent spectroscopy with a single antiproton spin / BASE Collaboration
Coherent quantum transition spectroscopy is a powerful tool in metrology, quantum information processing, magnetometry and precision tests of the standard model. It was applied with great success in proton and deuteron magnetic moment measurements, which culminated in maser spectroscopy with sub-parts-per-trillion resolution and many other experiments at the forefront of physics. [...]
2025 - 11 p. Fulltext from Publisher: PDF; External link: Interactions.org

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2025-07-25
06:02
Thermal design of an ejector-supported cycle using krypton for cooling of particle detector accelerators / Contiero, Luca (CERN ; Norwegian U. Sci. Tech.) ; Banasiak, Krzysztof (Norwegian U. Sci. Tech. ; SINTEF, Oslo) ; Verlaat, Bart (CERN) ; Hafner, Armin (Norwegian U. Sci. Tech.) ; Försterling, Sven (Unlisted, DE) ; Allouche, Yosr (Norwegian U. Sci. Tech.)
According to the High-Luminosity plan (HL-LHC) the Large Hadron Collider will be upgraded to further extend physics discoveries (2033–2034). The increase of the luminosity is followed by an increase of the radiation damage on the silicon sensors used to detect those particles, which they must be preserved from the thermal runaway after which the sensors reach electrical breakdown. [...]
2025 - 10 p. - Published in : International Journal of Refrigeration 178 (2025) 160-169 Published version: PDF;

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2025-07-25
06:02
Influence of Crystal Fiber Inhomogeneity on the Energy Resolution of a Sampling Electromagnetic Calorimeter / Roux, Louis (CERN ; ILM, Lyon) ; Martinazzoli, Loris (CERN) ; PIzzichemi, Marco (CERN ; Milan Bicocca U.) ; Dujardin, Christophe (IUF, Paris ; ILM, Lyon) ; Auffray, Etiennette (CERN)
Sampling electromagnetic calorimeters (ECALs) are widely used in high-energy physics (HEP) experiments, thanks to their ability to efficiently measure electromagnetic particles’ energy over a broad dynamic range while maintaining good energy resolution. These detectors alternate passive layers made of dense absorber materials, with active layers, such as scintillators. [...]
2025 - 6 p. - Published in : IEEE Trans. Nucl. Sci. 72 (2025) 2076-2081 Published version: PDF;

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2025-07-25
04:09
Exploring the Design and Measurements of Next-Generation 4H-SiC LGADs / Švihra, Peter (Prague, Inst. Phys. ; Prague, Tech. U.) ; Chochol, Jan (Charles U.) ; Kafka, Vladimír (Prague, Tech. U.) ; Klimsza, Adam (Charles U.) ; Kozelsky, Adam (Charles U.) ; Kroll, Jiří (Prague, Inst. Phys.) ; Malousek, Roman (Charles U.) ; Marčišovská, Mária (Prague, Tech. U.) ; Marčišovský, Michal (Prague, Tech. U.) ; Mikeštíková, Marcela (Prague, Inst. Phys.) et al.
This contribution presents the design, production, and initial testing of newly developed 4H-SiC Low Gain Avalanche Detectors (LGADs). The evaluation includes performance metrics such as the internal gain layer's efficiency in enhancing signal generation. [...]
arXiv:2504.09264.- 2025-06-19 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170742 Fulltext: PDF;
In : 17th Vienna Conference on Instrumentation (VCI2025), Vienna, Austria, 17 - 21 Feb 2025, pp.170742

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2025-07-24
07:01
Data-driven modeling of quenches in superconducting accelerator magnets / Paudel, Deepak (CERN) ; Mangiarotti, Franco Julio (CERN) ; Russenschuck, Stephan (CERN)
A superconductor transitions to the normal-conducting state above certain limits on temperature, current density, and magnetic flux density. This process is known as a resistive transition or quench. [...]
2025 - 10 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1081 (2026) 170816

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2025-07-24
07:01
System Design and Prototyping for the CMS Level-1 Trigger at the High-Luminosity LHC / Zabi, Alexandre (LLR, Palaiseau) /CMS Collaboration
For the High-Luminosity Large Hadron Collider era, the trigger and data acquisition system of the Compact Muon Solenoid experiment will be entirely replaced. Novel design choices have been explored, including ATCA prototyping platforms with SoC controllers and newly available interconnect technologies with serial optical links with data rates up to 28 Gb/s. [...]
2025 - 6 p. - Published in : PoS TIPP2023 (2025) 088 Fulltext: PDF;
In : 6th International Conference on Technology and Instrumentation in Particle Physics (TIPP 2023), Cape Town, Western Cape, South Africa, 4 - 8 Sep 2023, pp.088

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2025-07-24
04:54
Nonlinear tails of gravitational waves in Schwarzschild black hole ringdown / Kehagias, Alex (Natl. Tech. U., Athens ; CERN) ; Riotto, Antonio (Geneva U., CAP)
Schwarzschild black holes evolve toward their static configuration by emitting gravitational waves, which decay over time following a power law at fixed spatial positions. We derive this power law analytically for the second-order even gravitational perturbations, demonstrating that it is determined by the fact that the second-order source decays as the inverse square of the distance. [...]
arXiv:2504.06224.- 2025-07-08 - 9 p. - Published in : Phys. Rev. D 112 (2025) 024023 Fulltext: PDF;

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2025-07-24
04:46
Applications of CMOS Technology at the ALICE Experiment / Colella, Domenico (Bari Polytechnic ; Western Cape U.) /ALICE Collaboration
Monolithic Active Pixel Sensors (MAPS) combine the sensing part and the front-end electronics in the same silicon layer, making use of CMOS technology. Profiting from the progresses of this commercial process, MAPS have been undergoing significant advances over the last decade in terms of integration densities, radiation hardness and readout speed. [...]
arXiv:2408.02448.- 2025-04-24 - 6 p. - Published in : PoS: TIPP2023 (2025) , pp. 120
Fulltext: document - PDF; 2408.02448 - PDF;
In : 6th International Conference on Technology and Instrumentation in Particle Physics (TIPP 2023), Cape Town, Western Cape, South Africa, 4 - 8 Sep 2023, pp.120

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2025-07-24
04:25
ALICE ITS3: how to integrate a large dimension MAPS sensor in a bent configuration detector / Colella, Domenico (Bari Polytechnic) /ALICE Collaboration
The ALICE Collaboration is developing a novel vertexing detector to extend the heavy-flavour physics programme of the experiment during Run 4 by improving the pointing resolution of the tracking, particularly at low transverse momentum. It will be a detector with three truly cylindrical layers based on thin wafer scale MAPS, reaching less than 0.07% X/X0 per layer and with the innermost layer located as close as 19 mm to the interaction point. [...]
arXiv:2408.01108.- 2025-04-24 - 5 p. - Published in : PoS: TIPP2023 (2025) , pp. 119
Fulltext: 2408.01108 - PDF; document - PDF;
In : 6th International Conference on Technology and Instrumentation in Particle Physics (TIPP 2023), Cape Town, Western Cape, South Africa, 4 - 8 Sep 2023, pp.119

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