Bildkunde Südosteuropas. Ein Einblick

1. Mailand, Mussolini und zwei Maler: Die Biografien Gino Boccasiles und Giulio Bertolettis von Isabelle Arend 2. AEG, Siedlerstolz und Schwarzmarkt - von Kristin Bub 3. Weshalb die Technik ihre Lakaien fressen darf von Astrid Deilmann 4. Ein „Triumph der Nackten Tatsachen“: Der Eiffelturm auf der Weltausstellung 1900 von Anna Diercks ´ 5. „Die Saar bleibt deutsch!“ von Silke Eilers 6. Der Film als historische Quelle. von Johannes Etmanski 7. Das Skelett auf dem Bomber von Andreas Fleischer 8. Geschichte als Bild und Geschichtsbild: von Sabine Merten 9. Zum Porträt eines Nicht-Porträtierten von Thomas Pöpper 10. Die bildliche Darstellung des Moskauer Großfürsten auf der Carta marina und in der Historia de gentibus septentrionalibus des Olaus Magnus von Maike Sac

Heavy pseudoscalar mesons in a Schwinger-Dyson--Bethe-Salpeter approach

The mass spectrum of heavy pseudoscalar mesons, described as quark-antiquark bound systems, is considered within the Bethe-Salpeter formalism with momentum-dependent masses of the constituents. This dependence is found by solving the Schwinger-Dyson equation for quark propagators in rainbow-ladder approximation. Such an approximation is known to provide both a fast convergence of numerical methods and accurate results for lightest mesons. However, as the meson mass increases, the method becomes less stable and special attention must be devoted to details of numerical means of solving the corresponding equations. We focus on the pseudoscalar sector and show that our numerical scheme describes fairly accurately the $\pi$, $K$, $D$, $D_s$ and $\eta_c$ ground states. Excited states are considered as well. Our calculations are directly related to the future physics programme at FAIR.Comment: 9 pages, 3 figures; Based on materials of the contribution "Relativistic Description of Two- and Three-Body Systems in Nuclear Physics", ECT*, October 19-23, 200

Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

We present measurements of exclusive ensuremathπ+,0 and η production in pp reactions at 1.25GeV and 2.2GeV beam kinetic energy in hadron and dielectron channels. In the case of π+ and π0 , high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Δ (1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp → pp η , since controversial data exist at 2.0GeV; we find \ensuremathσ=0.142±0.022 mb. Using the dielectron channels, the π0 and η Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions

Author correction : roadmap for naming uncultivated archaea and bacteria

Correction to: Nature Microbiology https://doi.org/10.1038/s41564-020-0733-x , published online 8 June 2020. In the version of this Consensus Statement originally published, Pablo Yarza was mistakenly not included in the author list. Also, in Supplementary Table 1, Alexander Jaffe was missing from the list of endorsees. These errors have now been corrected and the updated Supplementary Table 1 is available online