Würzburg 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 77: Suche nach dunkler Materie IV

T 77.6: Talk

Thursday, March 22, 2018, 18:00–18:15, Philo-HS5

Towards the next generation of Dark Matter searches: the h(bb) + E_T^miss signature in the 2HDM + pseudoscalar simplified model — •Lars Henkelmann and Oleg Brandt — Kirchhoff Institut für Physik, Heidelberg

A wide range of cosmological and astrophysical observations indicate the existence of Dark Matter. Yet, its particle properties are unknown. Constraining the particle properties of Dark Matter using collider experiments requires accurate and realistic model predictions. Such predictions cannot be obtained with Effective Field Theories because the mediators can be resolved at LHC energies for a large class of underlying theories.

The Two-Higgs-Doublet-Model with an additional pseudoscalar represents a simplified and ultraviolet-complete model for dark matter which provides a wide spectrum of experimental signatures with detectable cross-sections at the LHC. The sensitivity of the ATLAS experiment using the signature with a 125 GeV Higgs boson decaying to two b quarks and missing transverse momentum from dark matter particles is discussed in the context of this model. The exclusion potential is discussed using simplified detector-level limits. In addition, exact exclusion limits are provided based on the full analysis using 36.1 fb⁻¹ of data.