This report presents a comprehensive collection of searches for new physics performed by
the ATLAS Collaboration during the Run 2 period of data taking at the Large Hadron …

We start by reviewing the existing literature on the creation of black holes during high-
energy particle collisions, both in the absence and in the presence of extra, compact …

The observation of electromagnetic radiation from radio to γ-ray wavelengths has provided a
wealth of information about the Universe. However, at PeV (10 15 eV) energies and above …

Astrophysical neutrinos are excellent probes of astroparticle physics and high-energy
physics. With energies far beyond solar, supernovae, atmospheric, and accelerator …

Very recently, it was suggested that combining the swampland program with the smallness
of the dark energy and confronting these ideas to experiment lead to the prediction of the …

A detailed study is presented of the expected performance of the ATLAS detector. The
reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together …

In the last two years, the dark dimension scenario has emerged as focal point of many
research interests. In particular, it functions as a step** stone to address the cosmological …

Tau neutrinos are the least studied particle in the standard model. This whitepaper
discusses the current and expected upcoming status of tau neutrino physics with attention to …

We investigate the classical formation of a D-dimensional black hole in a high-energy
collision of two particles. The existence of an apparent horizon is related to the solution of an …

We extend the formulation for perturbations of maximally symmetric black holes in higher
dimensions developed by the present authors in a previous paper to a charged black hole …