A key constant’s new measurement hints ‘dark photons’ don’t exist

This is the most precise look yet at the fine-structure constant

Weicheng Zhong

CONSTANT QUANTIFED A team of physicists, including Weicheng Zhong of the University of California, Berkeley (pictured) has performed the most precise measurement yet of the fine-structure constant, which governs the strength of electromagnetic interactions.

Chenghui Yu

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

From the Nature Index

Paid Content