7 papers
Thermal effects on Dark Matter production during cosmic reheating
Marco Drewes, Yannis Georis, Mubarak A. S. Mohammed +1
The relic abundance of Dark Matter (DM) produced via thermal freeze-in is sensitive to the thermal history during and after cosmic reheating. In minimal models, this opens up the p…
Testable Inverse Seesaw Motivated from a High Quality QCD Axion
Yannis Georis, Jie Sheng, Salvador Urrea +1
The QCD axion remains one of the most compelling solutions to the strong CP problem. Meanwhile, the type-I seesaw mechanism offers an elegant explanation for the lightness of the o…
Towards a precision calculation of in the Standard Model IV: Estimating the impact of positronium formation
Tobias Binder, Marco Drewes, Yannis Georis +3
We present a first assessment of how the previously unexplored effect of positronium formation can impact on the value of the effective number of neutrino species in the Standard M…
ECFA Higgs, electroweak, and top Factory Study
H. Abidi, J. A. Aguilar-Saavedra, S. Airen +373
The ECFA Higgs, electroweak, and top Factory Study ran between 2021 and 2025 as a broad effort across the experimental and theoretical particle physics communities, bringing togeth…
Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay
J. de Vries, M. Drewes, Y. Georis +2
We revisit the impact of heavy neutrinos with masses in the MeV-GeV range on neutrinoless double beta decay () in view of updated results for the lifetime of this process.…
On the collider-testability of the type-I seesaw model with 3 right-handed neutrinos
Marco Drewes, Yannis Georis, Juraj KlariÄ +1
If any heavy neutral leptons are discovered in accelerator-based experiments, key questions will involve their possible connection to neutrino masses or leptogenesis. Working in a…