6 papers
Is our vacuum global in a 331 model with three triplets?
Kristjan Kannike, Niko Koivunen, Aleksei Kubarski
We consider a 331 model, based on , with three triplets with a softly broken symmetry. The resulting scalar potential is commonly used in phe…
A Linear Collider Vision for the Future of Particle Physics
H. Abramowicz, E. Adli, F. Alharthi +446
In this paper we review the physics opportunities at linear colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the…
An EFT approach to the study of multi-phase criticality scenarios
Kristjan Kannike, Luca Marzola, Kristjan Müürsepp
Multi-phase critical scenarios explain the observed Higgs boson mass scale by the almost simultaneous occurrence of two smoothly connected phases of the theory, which differ by the…
The Linear Collider Facility (LCF) at CERN
H. Abramowicz, E. Adli, F. Alharthi +406
In this paper we outline a proposal for a Linear Collider Facility as the next flagship project for CERN. It offers the opportunity for a timely, cost-effective and staged construc…
Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
Ioannis D. Gialamas, Gert Hütsi, Kristjan Kannike +4
We perform fits to DESI, CMB and supernova data to understand the physical origin of the DESI hint for dynamical dark energy. We find that the linear parametrization of the equatio…
Dark matter in the scale-invariant 3-3-1-1 model
Alex G. Dias, Kristjan Kannike, Niko Koivunen +3
We propose a scale-invariant model with the 3-3-1-1 gauge symmetry that features universal seesaw for all fermion masses. The discrete remnant of the gauge group, the matter parity…