Heavy ion results from the CMS Collaboration

The first heavy ion run at the LHC occurred in November of 2010 and was followed by a second run in late 2011 that increased the available event sample by more than an order of magnitude. Heavy ion collisions at the LHC are expected to produce a partonic medium which has a higher energy density and a longer life-time than could be created at RHIC. This work gives an overview of what has been learned about the nature of the hot and dense medium created in high energy heavy ion collisions using new data from the CMS experiment. Specifically, azimuthal anisotropy at high transverse momentum, collection of nuclear modification factor measurements for different particle species and identified jets, differential jet properties, and quarkonia measurements are discussed.