Among many misconceptions in the description of the proton presented in undergraduate physics lectures is the origin of the proton’s spin. When we tell students about the three quarks in a proton, we usually say […]
When Rutherford discovered the proton in 1919, the only other basic constituent of matter that was known of was the electron. There was no way that the proton could decay without violating charge conservation. Ten […]
How big is a proton? Experiments during the past decade have called well-established measurements of the proton’s radius into question – even prompting somewhat outlandish suggestions that new physics might be at play. Soon-to-be-published results […]
Recent experimental results hint that some electroweak processes are not lepton-flavour independent, contrary to Standard Model expectations. If the effect strengthens as more data are gathered, possible explanations range from new gauge forces to leptoquarks.
The LHC lies dormant, its superconducting magnets drained of liquid helium to be brought back to room temperature. Along with the rest of CERN’s accelerator complex, the LHC entered long-shutdown two (LS2) on 10 December.
New wheel-shaped detectors that allow a better trigger and measurement capability for muons are among numerous transformations taking place to maintain the ATLAS physics programme into Run 3 and beyond.