Speaker
Description
The CONUS+ experiment observed coherent elastic neutrino-nucleus scattering (CEνNS) of reactor antineutrinos in the fully coherent regime during its first run in 2025, using four 1 kg point-contact HPGe detectors deployed at 21 m from the reactor core of the Leibstadt nuclear power plant in Switzerland. Building on this result, the second CONUS+ campaign presents updated results with significantly improved statistics, benefiting from a detector upgrade that doubled the active mass. The inclusion of waveform information enables pulse shape discrimination, further reducing the background and enhancing the signal sensitivity. The improved dataset allows a more precise measurement of the CEνNS cross-section, as well as a competitive constraint on the weak mixing angle sin²θW at low momentum transfer, probing the electroweak sector in a regime complementary to collider experiments. In this talk, the detector performance, analysis strategy, and new physics results will be presented, along with prospects for further improvements.