A neglected force produced by neutrinos and other particles helps atomic physics measurements align with predictions of the standard model.

The Standard Model of Particle Physics accounts for four fundamental forces—strong, weak, electromagnetism, and gravity—but for decades, scientists have wondered if an elusive fifth force might be at ...

For decades, the four known forces of nature, gravity, electromagnetism, and the strong and weak nuclear forces, have ...

Scientists are exploring the possibility of a "fifth force" beyond the four known fundamental forces. This hypothetical force ...