Physical Review Letters · 14 August 2026 · From issue 22

First Evidence of the Decay B + → π + e + e -

A rare particle breakdown was spotted for the first time, matching physics theory predictions.

R. Aaij, A. S. W. Abdelmotteleb et al.

Integrity screen: passed (3 checks) Checked 21 August 2026. Read the source

The plain-language reading of this paper is in the full issue, for subscribers.

Read the full issue

Get it free, every two days

Five papers free every issue, about 15 emails a month. No spam. Leave in one click.

Also in issue 22 14 papers

In animals, fat bubbles carried genetic instructions across the brain's protective barrier into brain cells.
Proceedings of the National Academy of Sciences
In mouse cells, two different viruses build very different stress granules during infection.
PLOS Biology
Mountain plant shifts toward warmth match regional warming, but not at individual plot level.
Nature Ecology & Evolution
In lab-grown human fetal brain tissue, an immune signal sped up brain growth and caused early folding.
Nature Neuroscience
In lab-grown cells, tiny shared channels between cells calm down wild electrical noise in each cell.
Nature Communications
In computer simulations, a new AI method predicts cracks more accurately using fewer data points.
Nature Communications
In a computer model, glycerol crosses a human cell tunnel very slowly, taking microseconds to pass through.
Proceedings of the National Academy of Sciences
In zebrafish, a mitochondria-protecting drug raised survival and eased liver damage from a rare genetic disease.
Science Advances
Young black hole systems almost never produce detectable gamma rays, a sky search shows.
The Astrophysical Journal
Nitrogen use explains more of a country's progress on global goals than climate or wealth does.
Nature Communications
A common science claim of "no difference" often just means the test was not sensitive enough.
Proceedings of the National Academy of Sciences
In human cells, a protein called CDT1 helps stalled DNA copying machines safely reverse course.
Science Advances
A locking coating made perovskite solar cells hit 26.76% efficiency and resist heat and light damage.
Science Advances