In the world of nuclear physics, protons often take the spotlight. But now, for the first time, the neutron has stepped into it. A recent experiment using the U.S. Department of Energy’s Jefferson Lab ...

"Measuring the spin-parity provides crucial insight into the internal quark dynamics and interaction mechanisms within the baryon," said Wan. They used sophisticated amplitude analysis techniques ...

The hypoethical particle, known as toponium, would be the result of merging a top quark and antiquark as well as the last missing example of quark-antiquark states known as quarkonium. Toponium ...

But how these partons are arranged inside the nucleon, and how they add up to produce the nucleon’s spin, remains unclear. Past experiments showed that quark spins only account for about 20% to ...