17.06.2020Observation of Excess Events in XENON1T

We do not claim to have found dark matter. Instead, we have observed an unexpected rate of events, the source of which is not yet fully understood. The signature of the excess is similar to what might result from a tiny residual amount of tritium, but could also be a sign of something more exciting—such as the existence of a new particle known as the solar axion or the indication of previously unknown properties of neutrinos. Read the press release issued by the university and faculty. The manuscript detailing the analysis is here: arXiv:2006.09721.