Physics and Astronomy · Nuclear and High Energy Physics
A review of quantum chromodynamics surveys what scientists have learned about the phases of matter that existed about 10 microseconds after the Big Bang. It focuses on particle production, fluctuations and comparisons between collision data and theoretical predictions.
Researchers transported 92 trapped antiprotons 7.5 kilometres by road without losing particles or measurably worsening the trap’s vacuum. The demonstration could allow future matter–antimatter tests in laboratories with less magnetic-field noise than CERN’s Antimatter Factory.
Researchers have proposed a way to reconstruct a possible bound state made of a top quark and its antimatter partner near the production threshold at the Large Hadron Collider. Preliminary results suggest the method could improve sensitivity by as much as 12 percent over the current strategy planned for the collider’s Run 3.
A major new review in particle physics compiles measured properties of major particle types, including the recently discovered Higgs boson. It adds 3,200 new measurements from 903 papers and updates many tables and reviews covering known particles and searches for hypothetical ones.
