The 2020 update of the European Strategy for Particle Physics included the mission to the European Committee for Future Accelerators (ECFA), to develop a global Detector R&D Roadmap defining the backbone of detector R&D required to deploy the community’s vision for the future HEP experiments reaching up to the FCC-hh. Based on this 200-pages document, CERN was ask to host Detector R&D (DRD)...
This talk presents an inclusive search for long-lived exotic particles decaying to a pair of muons. The experimental signature is a pair of oppositely charged muons originating from a common secondary vertex that is displaced from the proton-proton interaction point by distances ranging between several hundred micrometers to several meters. The search uses data collected by the CMS experiment...
The lack of experimental evidence for new physics in the LHC data puts stringent constraints on supersymmetric theories. However, supersymmetric particles at the LHC are searched for in a channel-by-channel fashion, in specific final states, and the results are typically presented in the context of simplified models. It is therefore important to attempt at a more global reinterpretation of the...
Predictions for exclusive final states from first principles are constrained to low multiplicity. Otherwise they are intractable and phenomenological models are used. This applies, first and foremost, to hadrons due to the strong interaction. However, electroweak objects at high energies are not too dissimilar and require an accurate treatment across these two regimes. In this contribution I...
Gauge invariance beyond perturbation theory has been found to substantially and qualitatively alter even basic spectroscopy. This has been confirmed in lattice simulations. The mechanism by Fröhlich, Morchio, and Stroccchi allows an analytical description of these findings.
These features are introduced, and especially their implications for grand-unified theories/leptoquarks and...
The currently most precise top quark mass determinations, called direct measurements, represent determinations of the Monte-Carlo top quark mass parameter from observables which can only be simulated and for which no first principles QCD computations exist. This leads to an overall ambiguity of the interpretation of these measurements (in terms of a well-defined top mass renomalization scheme)...
LHC run 3 has just started and in the years leading up to 2040, we will see a 20-fold increase in available data. This forthcoming dataset will have enormous potential for a deeper understanding of the Standard Model and possible physics beyond it. At the same time, the endless possibilities of new physics hiding in this dataset pose a challenge, both for our analyses and also our simulation...
Symplectic singularities, also known as hyper-Kahler singularities, encompass well-known geometric spaces such as the Kleinian surface singularities or the moduli space of instantons. Recently, a new class of symplectic singularities has emerged through the construction based on a physics model known as the 3d N=4 Coulomb branch.
In this presentation, I aim to provide an introduction and...
In the Regge limit, diffractive $pp$ and $p\bar p$ scattering at large $\sqrt{s}$ is dominated by the Pomeron, with a smaller admixture from the Odderon, a tower of C-odd soft gluons. The Odderon is believed to be the C-odd partner of the C-even Pomeron. While the latter in its soft version dominates the diffractive $pp$ cross section at high energy, the manifestation of the former is still...
A long-standing topic in high-energy physics is how matter behaves in regimes of very high energy density. While ordinarily quarks and gluons are confined to hadrons, it is expected that, given sufficiently large energy densities, a deconfined state of matter called the Quark-Gluon Plasma (QGP) is formed. Conditions for the QGP to be formed can be achieved in the laboratory when heavy nuclei...
Relativistic heavy-ion collision experiments are used to investigate the high-temperature properties of the strong interaction at large particle colliders (LHC, RHIC). In particular, they allow us to probe the non-equilibrium properties of the Quark-Gluon Plasma (QGP) created therein. Experimental evidence points towards a fast thermalization of this medium, but the initial stages before...
The pressing tension between different experimental results and theory predictions of neutron properties, such as the lifetime, is taken as motivation to revisit both, experimental uncertainties and novel theoretical hypothesis.
In the recent years, ultracold neutrons have been used to explore the quantum nature of the gravitational interaction, like in the qBounce experiment. From a theoretical perspective, starting from Dirac equation in a curved spacetime, one can derive the non-relativistic Schr\"odinger equation that governs the evolution of the neutron's wave function in the Earth's gravitional field. This...
The Neutron and Quantum Physics Group at TU Wien pursues various research approaches in the field of particles and cosmology. In this talk, I will present a new neutron decay facility PERC; a precise determination of the weak axial vector coupling gA from a measurement of the b-asymmetry in the decay of free neutrons and the relationship to the unitarity of the CKM matrix. New symmetry tests...
The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) and COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) experiments are state-of-the-art initiatives in the field of dark matter direct detection research. Operating at millikelvin temperatures, both experiments employ a two-channel readout system utilizing transition edge sensors...
The coherent elastic neutrino-nucleus scattering (CEvNS) is a unique process to study neutrino properties and to search for new physics beyond the Standard Model, from Weinberg angle at low momentum transfer to sterile neutrinos. The NUCLEUS Collaboration aims to detect the coherent elastic scattering of neutrinos on nuclei using reactor (anti)neutrinos, in the fully coherent regime - no other...
Hyperfine structure measurements on antihydrogen can provide sensitive tests of CPT invariance. The ASACUSA collaboration proposed such a measurement on a beam of antihydrogen at the antiproton decelerator of CERN. Supporting matter experiments are of high relevance in antihydrogen research to benchmark spectroscopy equipment and methods. In addition, dedicated measurements on hydrogen and...
