As the two experiments continue to gather
collision data,
so the range possible for the mass
of the Higgs boson is gradually being narrowed: ATLAS
results imply a possible mass range
of 116 - 130GeV; the CMS group shows it could only lie in the range 115 - 127GeV.
Back then the headlamps used to be masked
so as to prevent the headlamp glass from splintering
as a
result of stone impact or
collisions, thereby avoiding broken glass on the track.