Muons (Red rectangles) with no green line
by Whoandwhatitis moderator
Check out the discussion in DHH00002gh for some information about muons with no lines. It's a great resource!
@davidbundy77 has an automatically-updating collection that includes objects with the tag #missingmuon, here:
http://talk.higgshunters.org/#/collections/CHHL00000e ("Collection Images with too few muons")