Run 2

On July 21, CMS submitted for publication the first physics paper using the Run II data. The analysis studied the most common collisions to characterize both the number and direction of charged particles created in the collisions.

After a two-year shutdown, the LHC roared back to life earlier this summer, delivering proton-proton collisions at an energy of 13 TeV, significantly higher than the 8-TeV collisions of Run 1.