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T: Fachverband Teilchenphysik

T 4: Dark matter: theory

T 4.3: Vortrag

Montag, 30. März 2020, 17:00–17:15, H-HS II

One-loop EW corrections to Direct Detection in the Vector Dark Matter Model — Seraina Glaus¹, Margarete Mühlleitner¹, •Jonas Müller¹, Shruti Patel¹, and Rui Santos^2,3,4 — ¹Karlsruher Institut für Technologie, ITP, Karlsruhe, Deutschland — ²Instituto Politécnico de Lisboa, ISEL, Portugal — ³Centro de Física Teórica e Computacional, Faculdade de Ciências, Portugal — ⁴LIP, Departamento de Física, Universidade do Minho, Portugal

Recent dark matter (DM) direct searches place very stringent constraints on possible DM candidates proposed in extensions of the Standard Model (SM). Driven by the steadily increasing precision in DM direct detection searches, we present the one-loop electroweak corrections to the spin-independent DM scattering cross-section with nucleons in the simplified vector DM model (VDM). The VDM extends the SM with an additional complex singlet and a dark gauged U(1)_X yielding a vector-like DM particle which is stabilised by a Z₂ symmetry. The loop corrections are essential to discuss the sensitivities of the direct detection experiments for the model prediction and might allow for reopening parameter space which is excluded by tree-level analyses.