Topic
Detection and measurement of neutrinos and antineutrinos, including oscillation parameters such as theta-13.
Italian physicists report a calculation that matches the roughly 20% shortfall in electron neutrinos captured by gallium-71. If it holds, the anomaly needs no sterile neutrino to explain it, and the next test is scrutiny from other theorists.
Reality
Self-supervised pretraining let a sparse transformer match scratch-trained neutrino-flavour tagging with about 1,000 labelled events against roughly 10,000. All of it ran on simulated events for FASERCAL, a proposed FASER upgrade at CERN, so it is a design result until the detector records real neutrinos.
Reality
Ketterle's group at MIT calculated that the quantum memory the proposed beam relied on is about ten trillion times too brief. They also found that because neutrinos are fermions, its trace suppresses the next emission instead of seeding it.
Reality
Five papers in The Astrophysical Journal report the helium made in the universe's first five minutes with 0.5% uncertainty, three times tighter than the previous standard, from 15 chemically pristine dwarf galaxies.
Reality
Seventeen days of reactor-off data yielded roughly 100 antineutrino candidates matching decay predictions for the cores and spent-fuel pools, the first published benchmark for offline monitoring.
Reality