Hopes for new physics dashed by ordinary-looking W bosons at CERN
The CMS detector at the Large Hadron ColliderSciTech Image/James King-Holmes/Alamy Stock Photo
A possible crack in the standard model of particle physics seems to be shrinking, as new data from CERN’s Large Hadron Collider (LHC) contradicts a previous puzzling result that had physicists excited about the possibility of new, exotic physics – but some mysteries remain.
“The standard model survives for the moment,” Josh Bendavid at the Massachusetts Institute of Technology told a packed seminar room at CERN, the particle physics laboratory near Geneva, Switzerland, on 17 September. He was presenting new data on the mass of the W boson, a fundamental particle that is crucial for processes like nuclear decay and setting the mass of the Higgs boson.
Questions about the ...