Les Houches 2013: Physics at TeV Colliders: New Physics Working Group\n Report

We present the activities of the "New Physics" working group for the "Physics\nat TeV Colliders" workshop (Les Houches, France, 3--21 June, 2013). Our report\nincludes new computational tool developments, studies of the implications of\nthe Higgs boson discovery on new physics, important signatures for searches for\nnatural new physics at the LHC, new studies of flavour aspects of new physics,\nand assessments of the interplay between direct dark matter searches and the\nLHC.\n