"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 ...

“Spin correlation is a very powerful tool to look for new physics,” Grohsjean says. Scientists can precisely predict the ratio of top quark pairs with parallel spins (both spinning in the same ...

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 ...

High-energy collisions between protons at the LHC routinely produce top quark–antiquark pairs (tt-bar). Measuring the probability, or cross section, of tt-bar production is both an important ...