One of the tiniest building blocks of the universe has a weigh-in problem, and Ashutosh Kotwal is determined to get to the bottom of it.
For nearly 30 years, the Duke physicist has led a worldwide effort to home in on the mass of a fundamental particle called the W boson.
It's the force-carrying particle that allows the sun to burn and new elements to form, so it's pretty important. Without it, the entire universe would be in the dark.
But in recent years the W boson has been the source of a rift in the physics world. That's because the two most precise measurements to date of its mass—essentially how much matter, or "stuff" the particle contains—don't line up. READ MORE...
