Publications database

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2025-07-08
10:55
OpenAccess [PUBDB-2025-02225] Preprint
; ; ; et al
Attosecond Inner-Shell Lasing at Angstrom Wavelengths
[arXiv:2409.06914]
Since the invention of the laser nonlinear effects such as filamentation, Rabi-cycling and collective emission have been explored in the optical regime leading to a wide range of scientific and industrial applications. X-ray free electron lasers (XFELs) have led to the extension of many optical techniques to X-rays for their advantages of angstrom scale spatial resolution and elemental specificity. [...]
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2025-07-08
09:50
OpenAccess [PUBDB-2025-02221] Preprint
; ; ; et al
The H2M Monolithic Active Pixel Sensor -- characterizing non-uniform in-pixel response in a 65 nm CMOS imaging technology
[arXiv:2502.06573]
The high energy physics community recently gained access to the TPSCo 65 nm ISC (Image Sensor CMOS), which enables a higher in-pixel logic density in monolithic active pixel sensors (MAPS) compared to processes with larger feature sizes. To explore this novel technology, the Hybrid-to-Monolithic (H2M) test chip has been designed and manufactured. [...]
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2025-07-04
16:57
OpenAccess [PUBDB-2025-02203] Book/Dissertation / PhD Thesis
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Search for Light Pseudoscalars in Exotic Decays of the Higgs Boson with the CMS Experiment
[DESY-THESIS-2025-013]
Hamburg : Verlag Deutsches Elektronen-Synchrotron DESY, DESY THESIS 259 pp. () [10.3204/PUBDB-2025-02203] = Dissertation, Universität Hamburg, 2025  GO
This thesis presents a search for a pair of light pseudoscalar bosons produced from the decays of the 125 GeV Higgs boson, focusing on final states with four tau leptons. This searchis motivated by numerous beyond the standard model theories that predict an extended scalar sector, introducing a wide array of new physical states beyond the single Higgs boson observed in the standard model. [...]
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2025-07-04
10:34
OpenAccess [PUBDB-2025-02194] Journal Article
; ; ; et al
Reconstruction and identification of pairs of collimated $\tau $-leptons decaying hadronically using $\sqrt{s}=13$ TeV pp collision data with the ATLAS detector
[CERN-EP-2024-267; arXiv:2411.09357]
This paper describes an algorithm for reconstructing and identifying a highly collimated hadronically decaying $\tau $-lepton pair with low transverse momentum. When two $\tau $-leptons are highly collimated, their visible decay products might overlap, degrading the reconstruction performance for each of the $\tau $-leptons. [...]
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2025-07-04
09:42
OpenAccess [PUBDB-2025-02190] Journal Article
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Model-free photon analysis of diffusion-based single-molecule FRET experiments
Photon-by-photon analysis tools for diffusion-based single-molecule Förster resonance energy transfer (smFRET) experiments often describe protein dynamics with Markov models. However, FRET efficiencies are only projections of the conformational space such that the measured dynamics can appear non-Markovian [...]
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2025-07-03
21:12
OpenAccess [PUBDB-2025-02183] Report

Rahmenrichtlinie zum Forschungsdatenmanagement bei DESY
Hamburg : Deutsches Elektronen-Synchrotron DESY : 1st Edition, 13 () [10.3204/PUBDB-2025-02183]  GO
Deutsches Elektronen-Synchrotron DESY (nachfolgend: „DESY“) zählt zu den weltweit führenden Forschungszentren in der Teilchenphysik, der Astroteilchenphysik, der Physik mit Photonen und der Beschleunigerphysik. Die in diesen Forschungsgebieten in großen Mengen erzeugten Daten stellen hohe Anforderungen an ihre sorgfältige Handhabung und Speicherung. [...]

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2025-07-03
08:44
OpenAccess [PUBDB-2025-02176] Journal Article
; ; ; et al
Coexistence of charge density wave and field-tuned magnetic states in TmNiC 2
Exploring the relations between coexisting, cooperative, or competing types of ordering is a key to identify and harness the mechanisms governing the mutual interactions between them and to utilize their combined properties. We have experimentally explored the response of the charge density wave (CDW) to various antiferromagnetic, metamagnetic, and field-aligned ferromagnetic states that constitute the magnetic phase diagram of TmNiC$_2$. [...]
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2025-07-02
14:38
[PUBDB-2025-02172] Journal Article
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Exploring the Mechanism of Surface Cationic Vacancy Induces High Activity of Metastable Lattice Oxygen in Li‐ and Mn‐Rich Cathode Materials
Angewandte Chemie 137(21), e202419664 () [10.1002/ange.202419664]  GO
Li- and Mn-rich layered oxides exhibit high specific capacity due to the cationic and anionic reaction process during high-voltage cycling (≥4.6 V). However, they face challenges such as low initial coulombic efficiency (~70 %) and poor cycling stability [...]
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2025-07-02
14:35
OpenAccess [PUBDB-2025-02171] Journal Article
; ; ; et al
Temperature-Resolved Crystal Structure of Ethylene Carbonate
Ethylene carbonate (EC) is an organic solvent of the class of carbonate esters, which is used in state-of-the-art Li-ion batteries as part of the electrolyte mixture, being primarily responsible for the formation of a solid electrolyte interface. Thermal analysis showed that the sample’s melting point is 309 K [...]
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2025-07-01
13:44
[PUBDB-2025-02139] Contribution to a conference proceedings/Contribution to a book
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Integrated microfluidic devices for high-order harmonic generation
Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII : [Proceedings] - SPIE, 2024. - ISBN 9781510678392 - doi:10.1117/12.3001819
Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, San FranciscoSan Francisco, United States, 27 Jan 2024 - 1 Feb 20242024-01-272024-02-01
SPIE PC12869, PC128690M () [10.1117/12.3001819]  GO
Femtosecond Laser Irradiation followed by Chemical Etching is exploited to create microfluidic devices for High-order Harmonic Generation (HHG) in noble gases. A finetuning of the channels’ diameter and length permits the production of high-order harmonics in completely different regimes, going from the hollow waveguiding regime to the sub-mm interaction regime. [...]

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