Abstract:
The primary goal of the XENONnT experiment is the direct detection of Weakly Interacting Massive Particles (WIMPs), with a projected sensitivity improvement of an order of magnitude over XENON1T. In this talk, I will present recent results from searches for light dark matter and solar neutrinos using the scintillation-ionization channel and the ionization-only channel with a lowered detection threshold. Together, these complementary analyses set competitive constraints on dark matter–nucleon and dark matter–electron scattering cross sections. In the relevant mass range, the sensitivity approaches the so-called neutrino fog, where coherent neutrino scattering constitutes an irreducible background that can mimic light dark matter interactions.
Biography:
Shenyang is a PhD student in the Physics Department at Columbia University. He received his BSc from Fudan University in 2020 and subsequently joined the XENONnT collaboration. His recent work focuses on searches for light dark matter and solar neutrinos using data-driven background modeling and mitigation techniques. He served as a Signal and Background convener in XENONnT from 2023 to 2024. Outside of research, he is the Garden Manager of the Columbia Gardening Club.
Online Meeting Room: https://meeting.tencent.com/dm/4tgDFUmwMu7H
ID:290123486