We review the physics opportunities of the Future Circular Collider, covering its e+ e-, pp, ep
and heavy ion programmes. We describe the measurement capabilities of each FCC …

Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark
discovery, potentially providing a significant clue to some of our most basic, big-picture …

We investigate the potential for observing gravitational waves from cosmological phase
transitions with LISA in light of recent theoretical and experimental developments. Our …

The discovery of the Higgs boson in 2012, by the ATLAS and CMS experiments, was a
success achieved with only a percent of the entire dataset foreseen for the LHC. It opened a …

What is the maximum possible strength of a first-order electroweak phase transition and the
resulting gravitational wave (GW) signal? While naively one might expect that supercooling …

A search for heavy neutral lepton (N) production in K+→ e+ N decays using the data sample
collected by the NA62 experiment at CERN in 2017–2018 is reported. Upper limits of the …

The gravitational-wave astronomical revolution began in 2015 with LIGO's observation of the
coalescence of two stellar-mass black holes. Over the coming decades, ground-based …

Classically conformal Standard Model extensions predict an intriguing thermal history of the
early Universe. In contrast to the common paradigm, the onset of the electroweak phase …

We review the production of gravitational waves by an electroweak first-order phase
transition. The resulting signal is a good candidate for detection at next-generation …

We investigate the electroweak phase transition in the real-singlet extension of the Standard
Model at two-loop level, building upon existing one-loop studies. We calculate the effective …