“The researchers characterize WIMPs by their cross section — the probability that a particle will interact. The result shrinks the maximum possible cross section to about a fifth that allowed by previous results, LZ researchers report at the TeV Particle Astrophysics meeting in Chicago and at the Light Detection in Noble Elements meeting in São Paulo.

“We are making massive strides into new territory,” says physicist Chamkaur Ghag of University College London, spokesperson of LZ.

The study was performed with 280 days’ worth of data. LZ’s final results will be based on 1,000 days of data, and it’s expected to further carve away at the dark matter’s possibilities — or find evidence of it.”