News Particle Physics

New analysis boosts case for smaller proton

Controversy continues over size of subatomic particle’s radius

Mainz Microtron

PETITE PROTON  An electron scattering experiment (shown) at the Mainz Microtron in Germany may have found evidence that supports the case for a smaller proton, according to a new analysis of old data.

Institute of Nuclear Physics

By Emily Conover

- More than 2 years ago

Editor’s Note: After this article was published, Horbatsch and colleagues discovered an error in their analysis, which weakened the conclusions.