July 11th, 2019

лошадь, диаграмма, Фейнман

Данные компьютерной томографии пружинки от авторучки

CT Data of a Pen-Spring: Application to Under-Sampled Dynamic X-ray Tomography: https://arxiv.org/abs/1907.01871

This is the documentation of Computed Tomography (CT) data of a pen-spring. The open data set is available at this https URL and can be freely used for scientific purposes with appropriate references to the data and to this document in arxiv.org. The provided data set includes the X-ray sinograms ({\tt finalSino}) of a single 2D slice from a different height of the spring. The {\tt finalSino} was obtained from a measured 10-projection or 100-projection {\tt sinogram} using fan-beam geometry by down-sampling and taking logarithms. The data set includes also those original measured {\tt sinogram}s and corresponding measurement matrices.
лошадь, диаграмма, Фейнман

Сводка теоретических результатов по рассеянию нейтрино на электроне

Theory of elastic neutrino-electron scattering: https://arxiv.org/abs/1907.03379

Theoretical predictions for elastic neutrino-electron scattering have no hadronic or nuclear uncertainties at leading order making this process an important tool for normalizing neutrino flux. However, the process is subject to large radiative corrections that differ according to experimental conditions. In this paper, we collect new and existing results for total and differential cross sections accompanied by radiation of one photon, νe→νe(γ). We perform calculations within the Fermi effective theory and provide analytic expressions for the electron energy spectrum and for the total electromagnetic energy spectrum as well as for double- and triple-differential cross sections w.r.t. electron energy, electron angle, photon energy, and photon angle. We discuss illustrative applications to accelerator-based neutrino experiments and provide the most precise up-to-date values of neutrino-electron scattering cross sections. We present an analysis of theoretical error, which is dominated by the ∼0.2−0.4% uncertainty on the hadronic correction.

51 pages, 20 figures