CERN Accelerating science

CERN Preprints

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2025-02-09
11:44
Search for $ \gamma \mathrm{H} $ production and constraints on the Yukawa couplings of light quarks to the Higgs boson
A search for $ \gamma \mathrm{H} $ production is performed with data from the CMS experiment at the LHC corresponding to an integrated luminosity of 138 fb$ ^{-1} $ at a proton-proton center-of-mass collision energy of 13 TeV. [...]
CERN-EP-2025-007 ; CMS-HIG-23-011-003.
- 2025
Additional information for the analysis - CMS AuthorList - Fulltext

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2025-02-08
07:20
Classical Black Hole Probes of UV Scales / Calderón-Infante, José (CERN) ; Delgado, Matilda (Garching, Max Planck Inst. ; Harvard U., Phys. Dept.) ; Li, Yixuan (Padua U. ; INFN, Padua) ; Lust, Dieter (Garching, Max Planck Inst. ; Munich U., ASC) ; Uranga, Angel M. (Madrid, IFT)
In the context of the Swampland program, black hole attractors have been employed to probe infinite distances in moduli space, where the EFT cutoff goes to zero in Planck units and UV effects become significant. [...]
CERN-TH-2025-033 ; MPP-2025-10 ; LMU-ASC 04/25 ; IFT-UAM/CSIC-25-009 ; arXiv:2502.03514.
- 64.
Fulltext

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2025-02-08
06:12
Proof of principle for a light dark matter search with low-energy positron beams at NA64 / NA64 Collaboration
Thermal light dark matter (LDM) with particle masses in the 1 MeV - 1 GeV range could successfully explain the observed dark matter abundance as a relic from the primordial Universe. [...]
arXiv:2502.04053.
- 34.
Fulltext

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2025-02-07
08:06
Estimation of backgrounds from jets misidentified as $\tau$-leptons using the Universal Fake Factor method with the ATLAS detector / ATLAS Collaboration
Processes with $\tau$-leptons in the final state are important for Standard Model measurements and searches for physics beyond the Standard Model. [...]
arXiv:2502.04156 ; CERN-EP-2025-003.
- 2025 - 47.
Fulltext - Previous draft version - Fulltext

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2025-02-07
04:50
Resonant Photon Scattering in the Presence of External Fields / Richter, Jan (Braunschweig, Phys. Tech. Bund. ; Leibniz U., Hannover) ; Krasny, Mieczyslaw Witold (LPNHE, Paris ; CERN) ; Gilles, Jan (Braunschweig, Phys. Tech. Bund. ; Braunschweig Tech. U.) ; Surzhykov, Andrey (Braunschweig, Phys. Tech. Bund. ; Braunschweig Tech. U.)
This theoretical study explores resonant elastic photon scattering in the presence of external electric and magnetic fields, motivated by potential applications in storage ring experiments, such as the Gamma Factory project at CERN. [...]
arXiv:2501.13863.
- 16.
Fulltext

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2025-02-07
04:39
HEP High Power Targetry Roadmap -- Workshop Report / Ammigan, K. (Fermilab) ; Barbier, C. (Oak Ridge) ; Bidhar, S. (Fermilab) ; Casella, A. (PNL, Richland) ; Calviani, M. (CERN) ; Densham, C. (Rutherford) ; Hurh, P. (Fermilab) ; Kim, D. (Brookhaven) ; Liu, D. (Bristol U.) ; Lynch, K. (Fermilab) et al.
Designing a reliable target is already a challenge for MW-class facilities today and has led several major accelerator facilities to operate at lower than design power due to target concerns. [...]
FERMILAB-CONF-25-0069-AD ; arXiv:2502.03305.
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Fulltext

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2025-02-07
04:33
BPM Systems: A brief Introduction to Beam Position Monitoring / Wendt, M. (CERN)
This introduction on beam position monitors (BPM) summarizes the fundamental parts of the tutorial presented at the CAS 2018 on beam instrumentation. [...]
arXiv:2005.14081.
- 40.
Fulltext

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2025-02-07
04:32
Numerical analysis techniques for non-linear dynamics / Papaphilippou, Yannis (CERN)
The content of this contribution is based on the course on numerical analysis techniques for non-linear dynamics. [...]
arXiv:2012.10552.
- 27.
Fulltext

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2025-02-07
04:26
Measuring the Field Quality in Accelerator Magnets with the Oscillating-Wire Method -- a Case Study for Solving Partial Differential Equations / Russenschuck, Stephan (CERN)
The single stretched-wire method is commonly used to measure the magnetic field strength and magnetic axis in an accelerator magnet. [...]
arXiv:2006.09828.
- 21.
Fulltext

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2025-02-07
04:25
Imperfections and corrections / Tomás, R. (CERN) ; Buffat, X. (CERN) ; Coello, J. (CERN) ; Fol, E. (CERN) ; Malina, L. (CERN)
The measurement and correction of optics parameters has been a major concern since the advent of strong focusing synchrotron accelerators. [...]
arXiv:2006.10661.
- 31.
Fulltext

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