Results and Prospect for XENONnT Experiment

The XENONnT experiment aims to search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs) based on a two-phase time projection chamber with 5.9 tonnes of instrumented liquid xenon. A blind analysis for the first science run with an exposure larger than 1 tonne-year showed the data was consistent with the expectations from the background events and set new limits on interaction of WIMPs. Thanks to the five times lower background than those in the former XENON1T experiment, limits were greatly improved with a similar exposure.   

The one of the main background source is radon that are constantly emitted from detector materials. An online cryogenic distillation system actively removing radon from the xenon has been developed and an unprecedented low level of raond has been achieved.

The XENONnT is collecting more data with efforts for further improvement of the radon removing system aiming for an increased sensitivity of dark matter search over the following years.

The recent results and future prospects for XENONnT experimet will be prsented.