Speaker
Description
The standard model of particle physics has been confirmed by many experiments, but it cannot explain some important phenomena, such as dark matter (DM). Astrophysical observations show that most of the matter in the Universe is made of dark matter, yet its nature is still unknown. If DM interacts with standard model particles, these interactions would involve a new mediator that could be produced at the Large Hadron Collider, offering a unique opportunity to study dark matter in the laboratory.
In this study, we focus on a class of new physics models with at least three new particles: a Z' boson mediator, a dark Higgs boson, and a Majorana fermion that is the DM particle. With those models as benchmarks, we report the results of a search for dark matter particles produced in association with a dark Higgs boson decaying into a bottom quark pair in proton-proton collisions at sqrt(s) = 13 TeV, analysing data collected by the CMS experiment corresponding to an integrated luminosity of 138 fb$^{-1}$.
| I read the instructions above | Yes |
|---|