Jeremy Bernon
(Hong Kong University of Science and Technology)
26/04/2017 10:00
Higgs and BSM physics
Symmetry-based solutions of the hierarchy problem generically predict new states that cancel the Standard Model one-loop quadratic divergence of the Higgs mass. Phenomenological investigations are generally focused on the top-partners, expected to be at the TeV scale by naturalness arguments, their quantum numbers are model-dependent. While direct LHC searches have so far turned empty-handed...
Dr
Bryan Zaldivar
(LAPTh, Annecy-le-Vieux)
26/04/2017 10:20
Astroparticles
In the context of a simplified dark matter model with a pseudo-scalar mediator, we study how the present missing energy searches could be optimised for future LHC runs.
We then complete the analysis with complementary constraints coming relic abundance and indirect detection searches. We find that LHC high luminosity prospects strongly constrain the thermal relic hypothesis in large part of...
Ursula Laa
(LPSC Grenoble)
26/04/2017 10:40
Astroparticles
Following the LHC DM working group proposal, a simplified Dark Matter model approach has been widely adopted for the interpretation of LHC Run-II searches. In particular models with s-channel spin-1 and spin-0 mediators have been studied in detail. In this talk I will discuss the LHC phenomenology of the less explored spin-2 mediator scenario, presenting constraints on the model parameter...
Johannes Braathen
(LPTHE)
26/04/2017 12:00
Higgs and BSM physics
After the Higgs discovery, calculating its properties with high precision has become of great importance in the study of extensions of the Standard Model. The state-of-the-art calculation of Higgs masses is now at two-loop order for generic theories, performed in the Landau gauge. However, these calculations are plagued by infrared divergences due to tachyonic running Goldstone masses -- the...
M.
Nicolas Deutschmann
(IPNL)
26/04/2017 12:20
Higgs and BSM physics
The Effective Field Theory approach is a fruitful way of putting model independent constraints on heavy new physics. As the Higgs sector is one of the most popular candidates for deviations from the Standard Model prediction, it is particularly important that the constraints extracted from the experimental data on the Higgs boson be as meaningful as possible, which entails making accurate and...
Nicolas Bizot
(IPNL)
26/04/2017 12:40
Higgs and BSM physics
In this talk, I will consider a vector-like gauge theory of fermions that confines at the multi-TeV scale and that realizes the Higgs particle as a composite Goldstone boson.
Among other things, I will present the non-perturbative computation of the mass spectrum of the composite mesons in the approximation where the strong dynamics is described by
four-fermion operators.
