Journal Article

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2021-04-13
15:03
OpenAccess [PUBDB-2021-01782] Journal Article
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Dynamic Distribution of High-Rate Data Processing from CERN to Remote HPC Data Centers
[FERMILAB-PUB-21-118-SCD]
The prompt reconstruction of the data recorded from the Large Hadron Collider (LHC) detectors has always been addressed by dedicated resources at the CERN Tier-0. Such workloads come in spikes due to the nature of the operation of the accelerator and in special high load occasions experiments have commissioned methods to distribute (spill-over) a fraction of the load to sites outside CERN. [...]
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2021-04-13
14:07
DBCoverage [PUBDB-2021-01781] Journal Article
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The 6th Post-Newtonian Potential Terms at $O(G_N^4)$
[DESY 20--199; DESY-20-199; DO-TH 20/06; SAGEX-20-08; arXiv:2101.08630]
We calculate the potential contributions of the Hamiltonian in harmonic coordinates up 6PN for binary mass systems to $O(G_N^4)$ and perform comparisons to recent results in the literature \cite{Bern:2021dqo} and \cite{Bini:2020nsb}..
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2021-04-13
12:06
[PUBDB-2021-01779] Journal Article
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In-Situ High-Energy X-ray Diffraction Study of Austenite Decomposition During Rapid Cooling and Isothermal Holding in Two HSLA Steels
In-situ high-energy X-ray diffraction experiments with high temporal resolution during rapid cooling (280 °C s−1) and isothermal heat treatments (at 450 °C, 500 °C, and 550 °C for 30 minutes) were performed to study austenite decomposition in two commercial high-strength low-alloy steels. The rapid phase transformations occurring in these types of steels are investigated for the first time in-situ, aiding a detailed analysis of the austenite decomposition kinetics. [...]
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2021-04-12
22:15
[PUBDB-2021-01778] Journal Article
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On the Microstructural and Cyclic Mechanical Properties of Pure Iron Processed by Electron Beam Melting
Additive manufacturing (AM) processes such as electron beam melting (EBM) are characterized by unprecedented design freedom. Topology optimization and design of the microstructure of metallic materials are enabled by rapid progress in this field. [...]
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2021-04-12
15:35
OpenAccess [PUBDB-2021-01774] Journal Article
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May the four be with you: Novel IR-subtraction methods to tackle NNLO calculations
[IFIC/20-54; MPP-2020-218; P3H-20-079; TTP20-043; arXiv:2012.02567]
In this manuscript, we report the outcome of the topical workshop: paving the way to alternative NNLO strategies (https://indico.ific.uv.es/e/WorkStop-ThinkStart_3.0), by presenting a discussion about different frameworks to perform precise higher-order computations for high-energy physics. These approaches implement novel strategies to deal with infrared and ultraviolet singularities in quantum field theories. [...]
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2021-04-12
15:27
arXiv [PUBDB-2021-01773] Journal Article
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The Central Engines of Fermi Blazars
[arXiv:2101.10849]
We present a catalog of central engine properties, i.e., black hole mass ($M_{BH}$) and accretion luminosity ($L_{disk}$), for a sample of 1077 blazars detected with the Fermi Large Area Telescope. This includes broad emission-line systems and blazars whose optical spectra lack emission lines but are dominated by the absorption features arising from the host galaxy. [...]
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2021-04-12
11:12
[PUBDB-2021-01769] Journal Article

Rietveld refinement of the low temperature crystal structures of $Cs_{2}XSi_{5}O_{12}$ (X=Cu, Cd and Zn)
The synthetic leucite silicate framework mineral analogues Cs2XSi5O12 (X = Cu, Cd, Zn) were prepared by high-temperature solid-state synthesis. The results of Rietveld refinement, using 18 keV synchrotron X-ray powder diffraction data collected at low temperatures (8K X = Cu, Zn; 10K X = Cd) show that the title compounds crystallize in the space group Pbca and are isostructural with the ambient temperature structures of these analogues. [...]
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2021-04-12
09:43
DBCoverage [PUBDB-2021-01766] Journal Article
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A Self-Referenced In-Situ Arrival Time Monitor for X-Ray Free-Electron Lasers
We present a novel, highly versatile, and self-referenced arrival time monitor for measuring the femtosecond time delay between a hard X-ray pulse from a free-electron laser and an optical laser pulse, measured directly on the same sample used for pump-probe experiments. Two chirped and picosecond long optical supercontinuum pulses traverse the sample with a mutually fixed time delay of 970 fs, while a femtosecond X-ray pulse arrives at an instant in between both pulses. [...]
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2021-04-09
22:31
[PUBDB-2021-01738] Journal Article
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The Electrophilicity of Surface Carbon Species in the Redox Reactions of $CuO‐CeO_{2}$ Catalysts
Electronic metal–support interactions (EMSI) describe the electron flow between metal sites and a metal oxide support. It is generally used to follow the mechanism of redox reactions. [...]
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2021-04-09
14:02
OpenAccess [PUBDB-2021-01708] Journal Article
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Test of lepton flavor universality and search for lepton flavor violation in B → Kℓℓ decays
[BELLE-CONF-1904; arXiv:1908.01848]
We present measurements of the branching fractions for the decays B → Kμ+μ− and B → Ke+e−, and their ratio (RK), using a data sample of 711 fb−1 that contains 772 × 106 BB¯¯¯¯ events. The data were collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider [...]
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