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2025-11-11
07:44
Distributed Inter-Strand Coupling Current Model for Finite Element Simulations of Rutherford Cables / Dular, Julien (CERN) ; Glock, Alexander (CERN) ; Verweij, Arjan (CERN) ; Wozniak, Mariusz (CERN)
In this paper, we present the Distributed Inter-Strand Coupling Current (DISCC) model. [...]
arXiv:2510.24618. - 2025 - 23.
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2025-11-11
07:44
Nonlinearities of Schwarzschild Black Hole Head-on Collisions / Kehagias, Alex (Natl. Tech. U., Athens ; CERN) ; Perrone, Davide (U. Geneva (main)) ; Riotto, Antonio (U. Geneva (main))
We derive analytically the amplitude of the quadratic quasi-normal mode generated in the ringdown stage of the gravitational waveform produced by the ultra-relativistic head-on collision of two non-spinning Schwarzschild black holes. [...]
arXiv:2508.17993. - 2025 - 5.
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2025-11-11
05:27
Large-Scale Structure Probes of the Post-Inflationary Axiverse / Gorghetto, Marco (DESY) ; Trifinopoulos, Sokratis (CERN ; Zurich U.) ; Valogiannis, Georgios (Chicago U. ; Chicago U., KICP)
We study the cosmology of axions in the post-inflationary scenario, where random initial conditions and the ensuing string-domain-wall network generate an isocurvature power spectrum. [...]
DESY-25-147 ; CERN-TH-2025-193 ; arXiv:2511.04734. - 32.
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2025-11-11
05:23
The $Zα^2$ correction to superallowed beta decays in effective field theory and implications for $|V_{ud}|$ / Cao, Zehua (Kentucky U.) ; Hill, Richard J. (Kentucky U. ; Fermilab) ; Plestid, Ryan (Caltech ; CERN) ; Vander Griend, Peter (Kentucky U. ; Fermilab)
Superallowed ($0^+\rightarrow0^+$) beta decays currently provide the most precise extraction of quark mixing in the Standard Model. [...]
FERMILAB-PUB-25-0773-T ; CALT-TH-2025-032 ; CERN-TH-2025-20 ; arXiv:2511.05446. - 21.
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2025-11-11
04:30
Fast and Flexible Neutrino Decoupling Part I: The Standard Model / Escudero, M. (CERN) ; Jackson, G. (SUBATECH, Nantes) ; Laine, M. (U. Bern (main)) ; Sandner, S. (Los Alamos)
Cosmological determinations of the number of relativistic neutrino species, $N^{ }_{\rm eff}$, are becoming increasingly accurate, and further improvements are expected both from CMB and BBN data. [...]
LA-UR-25-30442 ; CERN-TH-2025-225 ; arXiv:2511.04747. - 34.
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2025-11-10
16:50
Readout and testing procedures to characterize the CMS inner tracker pixel detector for HL-LHC / Dinardo, Mauro (INFN, Milan Bicocca ; Milan Bicocca U.) /CMS Collaboration
The LHC will be upgraded to the High Luminosity LHC in the coming years, aiming to reach an instantaneous luminosity of up to $5 \times 10^{34}$\,cm$^{-2}$s$^{-1}$. The CMS Tracker detectors will be replaced and significantly upgraded to cope with the increased radiation fluence while ensuring excellent performance. [...]
CMS-CR-2025-236.- Geneva : CERN, 2025 - 9 p. Fulltext: PDF;
In : 33rd International Workshop on Vertex Detectors (VERTEX 2025), Knoxville, Tennessee, United States, 25 - 29 Aug 2025

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2025-11-10
16:50
The CMS Tracker Upgrade for Phase-2 Meeting the Challenges of the HL-LHC / Magherini, Matteo (CERN) /CMS Collaboration
The High-Luminosity Large Hadron Collider (HL-LHC) will significantly increase the instantaneous luminosity of proton-proton collisions, pushing the CMS experiment into a regime of extreme radiation levels, high particle multiplicities, and unprecedented data rates. To maintain and extend the physics performance of the CMS detector under these conditions, a complete replacement of the tracking system is underway as part of the Phase-2 Upgrade. [...]
CMS-CR-2025-221.- Geneva : CERN, 2025 - 8 p. Fulltext: PDF;
In : 33rd International Workshop on Vertex Detectors (VERTEX 2025), Knoxville, Tennessee, United States, 25 - 29 Aug 2025

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2025-11-10
16:50
Bare Module Testing for the CMS Vertex Detector Upgrade / Jesse Harris of the CMS collaboration /CMS Collaboration
The High-Luminosity LHC will continue exploring physics beyond the standard model with proton-proton collisions at ten times the luminosity of previous LHC runs. The physics program depends on precise measurements of charged particles near the beams. [...]
CMS-CR-2025-216.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;
In : 33rd International Workshop on Vertex Detectors (VERTEX 2025), Knoxville, Tennessee, United States, 25 - 29 Aug 2025

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2025-11-10
16:50
High-Throughput Packet Aggregator for the Back-End DAQ of CERN CMS HGCAL Detector / Shelake, Mukund (TIFR, Mumbai, DHEP) /CMS Collaboration
The Phase 2 upgrade of CERN LHC accelerator requires the CMS detector to replace its endcap calorimeters with the new HGCAL. Each of the 96 back-end DAQ FPGAs will process LHC collision data from 108 input optical fibre pairs operating at 10 Gb/s and will have to route the aggregated data into 12 output optical fibre pairs operating at 24 Gb/s. [...]
CMS-CR-2025-127.- Geneva : CERN, 2025 - 6 p. Fulltext: PDF;
In : IEEE International Symposium on Circuits and Systems, London, United Kingdom, 25 - 28 May 2025

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2025-11-10
16:43
Simultaneous determination of the CKM angle $\gamma$ and parameters related to mixing and $CP$ violation in the charm sector /LHCb Collaboration
A combination of measurements sensitive to the $C\!P$-violation angle $\gamma$ of the Cabibbo-Kobayashi-Maskawa unitarity triangle, to the charm mixing parameters that describe oscillations between $D^0$ and $\overline{D^0}$ mesons, and to the $C\!P$ asymmetries in the $D^0\to K^+ K^-$ and $D^0 \to \pi^+\pi^-$ decays is performed. All relevant beauty and charm results obtained with the data collected during the first two runs of the LHCb experiment at CERN's Large Hadron Collider are included, with three new inputs compared to the combination presented in 2024. [...]
LHCb-CONF-2025-003; CERN-LHCb-CONF-2025-003.- Geneva : CERN, 2025 - 22.
In : Implications of the LHCb measurements and future prospects, Cern, Geneva, Ch, 4 - 7 Nov 2025

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