We am very pleased to inform you that a ceremony took place on November 19th at the JUNO site with the funding agencies to celebrate the start of data taking and the first results of the experiment after only two months of operation.
Two of the neutrino oscillation parameters—the solar ones (θ₁₂ and Δm²₁₂)—have been measured by JUNO with a precision better than the current world average (combined results of all previous measurements from the last decades).
These remarkable results are presented in an arXiv preprint and will be submitted to Nature.
In addition, a detailed paper describing the detector performance has been submitted to Chinese Physics C and is also available on arXiv.
The press release is given below.