W-elcome at the LHC

ATLAS just issues the latest release of its e-news, officially announcing the first W boson candidate events in the LHC … which of course reminds me of my nice little master thesis on the W mass measurement at ATLAS.

Below are illustrations of the two candidates: one W decaying into an electron (left) and one into a muon (right), of course both accompanied by the according neutrino, represented by missing energy (ETmiss) in the event.