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Statut Confirmé
Domaines hep-ph
Date Jeudi 13 Juin 2019
Heure 16:00
Institut LPT
Salle 114
Nom de l'orateur Tenorth
Prenom de l'orateur Valentin
Addresse email de l'orateur
Institution de l'orateur Max-Planck-Institut Heidelberg
Titre Extended Dark Matter EFT(s)
Résumé The search for Dark Matter is one of the main tasks of modern particle physics, which is performed in "mono-X" searches at the LHC, indirect and direct detection experiments. I present a framework in the language of effective field theory (EFT) to describe DM-SM interactions and combine the experimental limits from nuclear energies at Direct Detection experiments to the TeV-scale at the LHC. To improve the high energy-validity of conventional DM EFTs a dynamical (pseudo-) scalar is added serving as mediator to the dark sector, represented by a fermion (or scalar), where richer new-physics sectors can be consistently included via higher-dimensional operators. The model is formulated in a gauge-invariant way and allows to confront classical Dark Matter observables with measurements of the Higgs sector. Interestingly the leading effects originate at dimension-five, allowing to capture them with a rather small set of parameters. Constraints on these arising from collider mono-X searches, the relic abundance, indirect and direct detection experiments are presented. The "model-independent" approach allows to apply the results to different UV-complete models such as 2HDM+a, extended fermion sectors and the NMSSM. In a (shorter) second part I discuss the phenomenology of a specific operator that leads to interesting "mono-di-jet" final states at the LHC or future lepton colliders. The choice of operators is motivated by new flavor symmetries and the effort to explore new final states at collider experiments.
Numéro de preprint arXiv
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