Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 3: Search for new particles 2
T 3.8: Vortrag
Montag, 4. März 2024, 17:45–18:00, Geb. 20.30: 2.058
Renormalization of the Dark Abelian Sector Model — Stefan Dittmaier1, •Jonas Rehberg1, and Heidi Rzehak2 — 1Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — 2Institute for Theoretical Physics, University of Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
The Dark Abelian Sector Model (DASM) extends the SM by a rather generic dark sector with an additional U(1)d gauge symmetry. In detail, this dark sector contains a complex Higgs field and a Dirac fermion, which only carry the charge of the additional U(1)d, as well as right-handed neutrinos. Using the only two feasible SM operators—the SM Higgs mass operator and the field-strength tensor of the U(1)Y of electroweak hypercharge—and the right-handed neutrino fields, allows us to open three portals of the SM, which is a singlet with respect to the U(1)d, to the dark sector of the DASM.
After a brief introduction of the model, we present the renormalization of the DASM at NLO with a special emphasis on the mixing angles of the model. Finally, we conclude by presenting the W-boson mass prediction derived from muon decay in the DASM at NLO as a first step towards confronting the model with experimental data.
Keywords: BSM renormalization; BSM physics; dark sector; Z' extension