Contributions to a conference proceedings

Precision top mass measurements at hadron colliders have been notoriously difficult. The fundamental challenge in the current approaches lies in achieving simultaneously high top mass sensitivity and good theoretical control. [...]

Particle physics today faces the challenge of explaining the mystery of dark matter, the origin of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent fine-tuning of the electro-weak scale, and many other aspects of fundamental physics. Perhaps the most striking frontier to emerge in the search for answers involves new physics at mass scales comparable to familiar matter, below the GeV-scale, or even radically below, down to sub-eV scales, and with very feeble interaction strength. [...]

We propose a new experimental method to probe the photon–parton distribution function inside the proton (photon PDF) at the LHC energies. The method is based on the measurement of dilepton production from the $\gamma p \to \ell^+ \ell^- + X$ reaction in proton–lead collisions. [...]

Test beam results obtained with 3D pixel sensors bump-bonded to the RD53A prototype readout ASIC are reported. Sensors from FBK Italy and IMB-CNM (Spain) have been tested before and after proton-irradiation to an equivalent fluence of about 1 × 10 16 ≠cm -2 (1 MeV equivalent neutrons). [...]

The planned High Luminosity Large Hadron Collider is being designed to maximise the physics potential of the LHC with 10 years of operation at instantaneous luminosities of 7.5×10$^{34}$cm$^{-2}$s$^{-1}$ . A consequence of this increased luminosity is the expected radiation damage requiring the tracking detectors to withstand hadron fluence to over 1×10$^{15}$ 1 MeV neutron equivalent per cm$^2$ in the ATLAS Strips system. [...]

Over the next few years the luminosity of the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN), will be increased to accumulate a higher number of collisions to gain access to rare processes. It is planned to reach an instantaneous luminosity of $\mathcal{L}$=7.5⋅10$^{34}$cm$^{−2}$s$^{−1}$ in the year 2026 at the High Luminosity Large Hadron Collider (HL-LHC). [...]

Depleted Monolithic Active Pixel Sensors (DMAPS) are monolithic pixel detectors with high-resistivity substrates designed for use in high-rate and high-radiation environments. They are produced in commercial CMOS processes, resulting in relatively low production costs and short turnaround times, and offer a low material budget. [...]

The misalignment mechanism for axion-like particles (ALPs) is a leading explanation for dark matter. In this work we investigate ALPs with non-periodic potentials, which allow for large misalignment of the field from the minimum and make it possible for ALPs to match the relic density of dark matter in a large part of the parameter space. [...]

Der Umgang mit Schweißeigenspannungen und -verzug erfordert detaillierte Werkstoff- und Prozesskenntnis. Vielfältige Randbedingungen bei Schmelzschweißprozessen erschweren die Kontrolle von Bauteileigenschaften zusätzlich. [...]

Microresonator solitons enable high repetition-rate optical frequency combs. Their spectral span scales inversely with the strength of the resonator’s anomalous group velocity dispersion [...]