Specific three-loop contributions to b → sγ associated with the current-current operators

Autor: Christoph Greub, Hrachia M. Asatrian, Francesco Saturnino, Christoph Wiegand

Publikováno v: Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-21 (2023)

Abstract We work out a specific class of three-loop diagrams (of order α s 2 $$ {\alpha}_s^2 $$ ) contributing to the decay amplitude for b → sγ associated with the current-current operators O 1 and O 2 at the physical value of the charm-quark ma

Externí odkaz: https://doaj.org/article/7f4faa4b1cb94cfb9b569ab41ddc9a57

Automated Extraction of Shallow Erosion Areas Based on Multi-Temporal Ortho-Imagery

Autor: Clemens Geitner, Kati Heinrich, Christoph Wiegand, Martin Rutzinger

Publikováno v: Remote Sensing, Vol 5, Iss 5, Pp 2292-2307 (2013)

In several areas of the Alps, steep grassland is characterized by shallow erosions. These erosions represent a hazard through the increased availability of unconsolidated material in steep locations, loss of soil and impaired landscape aesthetics. Ge

Externí odkaz: https://doaj.org/article/d9128d3c00634b4b8c5c3ad4b425ca48

Understanding the Growth Mechanisms of Multilayered Systems in Atomic Layer Deposition Process

Autor: Christoph Wiegand, Robert Zierold, Kornelius Nielsch, René Faust, Alexander Meinhardt, Robert H. Blick

Publikováno v: Chemistry of Materials. 30:1971-1979

In atomic layer deposition (ALD), the initial growth is of particular interest because it defines the nucleation behavior and determines the minimum number of cycles to achieve a closed layer. The growth rate is quantified by the growth per cycle (GP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cbef6f9970f4088c69b600123075543
https://doi.org/10.1021/acs.chemmater.7b05128

b → sℓ+ℓ− transitions in two-Higgs-doublet models

Autor: Christoph Wiegand, Andreas Crivellin, Dario Müller

Publikováno v: Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 6, Pp 1-34 (2019)
Crivellin, Andreas; Müller, Dario; Wiegand, Peter Christoph (2019). b → sℓ+ℓ− transitions in two-Higgs-doublet models. Journal of High Energy Physics, 2019(6), p. 119. Springer 10.1007/JHEP06(2019)119

In this article we study b → sμ + μ − transitions and possible correlations with the anomalous magnetic moment of the muon (a μ ) within two-Higgs-doublet models with generic Yukawa couplings, including the possibility of right-handed neutrino

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b8a61d15e020aece6446b7f9074fd5d
https://doi.org/10.1007/jhep06(2019)119

Die Auswirkungen des Wertewandels von Generation Y und Z auf die Personalführung

Autor: Christoph Wiegand

Diplomarbeit aus dem Jahr 2019 im Fachbereich Führung und Personal - Personalführung, Note: 1,0, Verwaltungs- und Wirtschafts-Akademie Wiesbaden e.V., Sprache: Deutsch, Abstract: Das Ziel dieser Arbeit ist, einen Überblick über die Auswirkungen d