Proceedings

FLASH, the world’s first XUV and soft X-ray freeelectron laser is a user facility since 2005 and operates two SASE beamlines in parallel: FLASH1 and FLASH2, since 2014. In the FLASH2 main undulator beamline radiation down to 3.2 nm wavelength in the fundamental has been demonstrated. [...]

We present a detailed study of the precision calculations of higher-order contributions to effective potential with the application of three-dimensional effective field theories (3D EFTs). Our work focuses on the thermodynamic quantification and description of electroweak phase transitions in the early Universe for the complex singlet extended Standard Model (cxSM). [...]

ATLAS is currently preparing for the HL-LHC, with an all-silicon Inner Tracker (ITk) that will replace the current Inner Detector. The ITk will feature a pixel detector surrounded by a strip detector, with the strip system consisting of 4 barrel layers and 6 endcap disks per side. [...]

Relativistic heavy-ion beams at the LHC are accompanied by a large flux of equivalentphotons, leading to photon-induced processes. Measurements of photon-induced production of taulepton pairs can be used to constrain the tau lepton’s anomalous magnetic dipole moment (g-2).A recent ATLAS measurement using muonic decays of tau leptons in association with electrons andtracks is presented. [...]

This proceeding summarizes recent measurements of the Cabibbo-Kobayashi-Maskawa (CKM)matrix elements |𝑉𝑐𝑏 | and |𝑉𝑢𝑏 | at the Belle and Belle II experiments. It provides insights derivedfrom both exclusive and inclusive determinations. [...]

Semileptonic 𝐵-meson decays involving the quark transition 𝑏 → 𝑐𝑙𝜈 provide excellent sensi-tivity to probe potential lepton-flavour universality violation. This work introduces two recentmeasurements related to tests of light-lepton flavour universality using a data sample collected atthe Υ(4𝑆) resonance on the Belle II experiment corresponding to an integrated luminosity of 189fb−1. [...]

The DFG funded project „openCost" creates a technical infrastructure to comprehensively record publication cost data, make them openly distributable by means of standardized interfaces, and accessible by well known platforms like EZB, OpenAPC or the the OpenAccess Monitor.Besides presenting first results from openCost itself the main goal of the workshop is to create an opportunity for knowledge exchange between national and international experts in the field. It will allow them to present their perspectives in the area of publication costs and cost transparency and report on their experiences to ensure openCost is internationally adoptable.The expert workshop will summarizes the desiderata of the individual participants and the bodies they represent. [...]

The European Physical Society Conference on High Energy Physics (EPS-HEP) is one of the major international conferences that reviews the field every second year since 1971 and is organised by the High Energy and Particle Physics Divison of the European Physical Society. The latest conferences in this series were held in Ghent, Venice, Vienna, Stockholm, Grenoble, Krakow, Manchester, Lisbon, AachenThe 2021 European Physical Society conference for high energy physics will follow a purely online format. [...]

The International Conference on Synchrotron Radiation Instrumentation (SRI) is a unique and significant international forum held every three years in the community of synchrotron radiation (SR) and free electron lasers (FEL). It is the prime forum for fostering connections between cutting-edge synchrotron radiation instrumentation, science, and the requirements of the user community. [...]