Journal Article

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2023-11-30
15:13
arXiv [PUBDB-2023-07370] Journal Article
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Measurement of CP Violation in B0→KS0π0 Decays at Belle II
[Belle II Preprint 2023-006; KEK Preprint 2023-2; arXiv:2305.07555]
We report a measurement of the CP-violating parameters C and S in B0→KS0π0 decays at Belle II using a sample of 387×106 BB¯ events recorded in e+e- collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. [...]
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2023-11-30
15:08
arXiv [PUBDB-2023-07368] Journal Article
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Determination of |Vcb| using B¯0→D*+ℓ-ν¯ℓ decays with Belle II
[Belle II Preprint 2023-014; KEK Preprint 2023-28; arXiv:2310.01170]
We determine the Cabibbo-Kobayashi-Maskawa matrix-element magnitude |Vcb| using B¯0→D*+ℓ-ν¯ℓ decays reconstructed in 189 fb-1 of collision data collected by the Belle II experiment, located at the SuperKEKB e+e- collider. Partial decay rates are reported as functions of the recoil parameter w and three decay angles separately for electron and muon final states. [...]

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2023-11-28
16:27
DBCoverage [PUBDB-2023-07279] Journal Article
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Mapping the nanoscale elastic property modulations of polypyrrole thin films in liquid electrolyte with EC-AFM
Linking structure to mechanical and elastic properties is a major concern for the development of novelelectroactive materials. This work reports on the potential-induced changes in thickness and Youngmodulus of a substrate supported, perchlorate doped polypyrrole thin film (<100 nm) investigated withelectrochemical atomic force microscopy (AFM) under in situ conditions. [...]
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2023-11-28
15:58
DBCoverage [PUBDB-2023-07275] Journal Article
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Effect of cyclic loading on microstructure and crack propagation in additively manufactured biomaterial Co–Cr–Mo alloy
CobalteChromiumeMolybdenum (CoeCreMo) alloys are commonly used for artificial hipand knee joint metallic implants. These components are subjected to repetitive loads duringservice. [...]
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2023-11-28
15:30
[PUBDB-2023-07273] Journal Article
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Coherent x-ray diffraction of a semiregular Pt nanodot array
[NFFA Grant 101007417]
Structural insight into nano-objects down to the atomic scale is one of the most important prerequisites tounderstand the properties of functional materials and will ultimately permit one to relate the size and shape ofnanoparticles to their catalytic activity. We elucidate the potential of extracting structural information abouta small ensemble of nanoparticles that are semiregularly arranged on a periodic array from coherent x-rayBragg diffraction. [...]
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2023-11-27
21:04
Embargoed OpenAccess [PUBDB-2023-07220] Journal Article
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Ultrafast Roaming Mechanisms in Ethanol Probed by Intense Extreme Ultraviolet Free-Electron Laser Radiation: Electron Transfer versus Proton Transfer
Ultrafast H$_2$$^+$ and H$_3$$^+$ formation from ethanol is studied using pump-probe spectroscopy with an extreme ultraviolet (XUV) free-electron laser. The first pulse creates a dication, triggering H2 roaming that leads to H$_2$$^+$ and H$_3$$^+$ formation, which is disruptively probed by a second pulse [...]
Published on 2023-05-04. Available in OpenAccess from 2024-05-04.: Download fulltextPDF Download fulltextPDF (PDFA) (additional files);

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2023-11-27
20:41
OpenAccess [PUBDB-2023-07219] Journal Article
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Direct tracking of ultrafast proton transfer in water dimers
Science advances 9(28), eadg7864 () [10.1126/sciadv.adg7864]  GO
Upon ionization, water forms a highly acidic radical cation H$_2$O$^+$· that undergoes ultrafast proton transfer (PT)—a pivotal step in water radiation chemistry, initiating the production of reactive H$_3$O$^+$, OH radicals, and a (hydrated) electron. Until recently, the time scales, mechanisms, and state-dependent reactivity of ultrafast PT could not be directly traced [...]
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2023-11-27
09:57
OpenAccess [PUBDB-2023-07190] Journal Article
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Conservative tail and failed-tail effects at the fifth post-Newtonian order
[DESY-23-100; arXiv:2307.05860]
This work deals with the tail and “failed” tail sectors of the conservative dynamics for compact binary systems at the 5PN order. We employ the Fokker Lagrangian method with dimensional regularization, and our results for the tail sector are perfectly consistent with the previous effective field theory computations. [...]
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2023-11-24
12:33
DBCoverage [PUBDB-2023-07172] Journal Article
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Multiple unconventional charge density wave transitions in $LaPt_2Si_2$ superconductor clarified with high-energy X-ray diffraction
The quasi-2D platinum-based rare earth intermetallic LaPt$_2$Si$_2$ has attracted attention as it exhibits strong interplay between charge density wave order and superconductivity. However, most of the results reported on this material come from theoretical calculations, preliminary bulk investigations and powder samples, which makes it difficult to uniquely determine the temperature evolution of its crystal structure and, consequently, of its charge density wave transition. [...]
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2023-11-24
11:31
[PUBDB-2023-07167] Journal Article
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Exploiting flux shadowing for strain and bending engineering in core–shell nanowires
Nanoscale 15(5), 2254-2261 () [10.1039/D2NR03279A]  GO
Here we report on the non-uniform shell growth of In$_x$Ga$_{1−x}$As on the GaAs nanowire (NW) core by molecular beam epitaxy (MBE). The growth was realized on pre-patterned silicon substrates with the pitch size ($p$) ranging from 0.1 μm to 10 μm. [...]
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