9 articles tagged with mass ordering.
The latest cosmological surveys push the summed neutrino mass below 0.07 eV — so low it is starting to crowd the floor set by oscillation experiments. Something has to give.
After more than a decade of construction, JUNO began operations in 2025. Here is what its first physics year looks like — what the detector is actually measuring, what calibrations come first, and which results the field expects to land later in the decade.
20 kilotons of ultrapure liquid scintillator, 3% energy resolution, and 52 km from two reactor complexes. JUNO's path from 2025 commissioning to definitive mass-ordering by the early 2030s.
Is the lightest neutrino mass state the one with the most electron neutrino content, or the least? The answer matters for cosmology, leptogenesis, and 0νββ — and JUNO, DUNE, Hyper-K, and atmospheric experiments are closing in.
Three neutrinos exist. We know the mass-squared differences between them. We do not know which one is the heaviest. That tiny gap of knowledge has surprisingly large consequences.
Seven hundred meters under a hill in Guangdong, the Jiangmen Underground Neutrino Observatory is now listening for reactor antineutrinos with unprecedented precision. Its mission: settle the mass ordering.
DUNE uses a 1300 km baseline and a liquid-argon time-projection chamber; Hyper-K uses a 295 km baseline and a 260-kiloton water Cherenkov tank. Both will measure CP violation in neutrinos — but with complementary strengths and different systematic risks.
Everything you need to understand neutrino oscillation — from the original Pontecorvo proposal in 1957, through the experimental discoveries at Super-Kamiokande and SNO, to the open questions about CP violation and the mass ordering. The single most comprehensive reference on neutrinos changing flavor as they travel.
A 20-kiloton acrylic sphere buried under a hill in Guangdong is now filled, instrumented, and counting reactor antineutrinos. Its target: the neutrino mass ordering.
