10 papers
Collider searches of scalar singlets across lifetimes
Elina Fuchs, Oleksii Matsedonskyi, Inbar Savoray +1
Spin-0 singlets arise in well-motivated extensions of the Standard Model. Their lifetime determines the best search strategies at hadron and lepton colliders. To cover a large rang…
High-Temperature Electroweak Symmetry Breaking by SM Twins
Oleksii Matsedonskyi
We analyse a possible adjustment of Twin Higgs models allowing to have broken electroweak (EW) symmetry at all temperatures below the sigma-model scale TeV. The modificatio…
Probing the Relaxed Relaxion at the Luminosity and Precision Frontiers
Abhishek Banerjee, Hyungjin Kim, Oleksii Matsedonskyi +2
Cosmological relaxation of the electroweak scale is an attractive scenario addressing the gauge hierarchy problem. Its main actor, the relaxion, is a light spin-zero field which dy…
High-Temperature Electroweak Symmetry Non-Restoration from New Fermions and Implications for Baryogenesis
Oleksii Matsedonskyi, Geraldine Servant
The strength of electroweak symmetry breaking may substantially differ in the early Universe compared to the present day value. In the Standard Model, the Higgs vacuum expectation…
Searching for Earth/Solar Axion Halos
Abhishek Banerjee, Dmitry Budker, Joshua Eby +4
We discuss the sensitivity of the present and near-future axion dark matter experiments to a halo of axions or axion-like particles gravitationally bound to the Earth or the Sun. T…
The CLIC Potential for New Physics
J. de Blas, R. Franceschini, F. Riva +100
The Compact Linear Collider (CLIC) is a mature option for the future of high energy physics. It combines the benefits of the clean environment of colliders with operation…