From Quanta Magazine, May 6, 2020: Two ways of approximating the ultracomplicated math that governs quark particles have recently come into conflict, leaving physicists unsure what their decades-old theory predicts. Fermilab scientists Andreas Kronfeld and Chris Polly weigh in.
Scientists on Large Hadron Collider experiments can learn about subatomic matter by peering into the collisions and asking: What exactly is doing the colliding? When the answer to that question involves rarely seen, massive particles, it gives scientists a unique way to study the Higgs boson. They can study rare, one-in-a-trillion heavy-boson collisions happening inside the LHC.