Ponente
Descripción
Dark matter direct detection is now standing at an interesting point where the neutrino background and the upper bound on the dark matter signal cross section are starting to overlap in a region of dark matter mass of around 10 GeV. However, if there exists BSM physics with isospin violating interactions between the dark and the SM sectors, both the neutrino fog and the DM exclusion bounds are modified. Considering U(1) extensions of the SM with a massive vector mediator (Z') as the dark portal, we show that both the dark matter-nucleus and the the neutrino-nucleus scattering (CENνS) cross sections decrease in a significant portion of the parameter space, relaxing the current limits and opening space for low-mass dark matter. In this work, we show scenarios with different coupling configurations where isospin violating models with a low-mass dark matter candidate are still valid in regions where isospin conserving models are ruled out.
