A linear collider could become a Higgs factory REY.HORI/KEK

Japan is progressing towards building the world’s next major particle collider, but physicists were hoping for more concrete plans. After years of delays, it is now merely planning to discuss funding options with other countries.

The Japanese government’s long-awaited announcement was made on 7 March.

“The first time I saw the statement I was somewhat disappointed,” says Daniel Jeans at Japan’s High Energy Accelerator Research Organization, KEK. “The language is not particularly positive, but on careful reading all the elements we want are there.”

While the Japanese government …