Annotation The 21 papers offer personal perspectives by theoretical, experimental, and accelerator physicists on the physics objectives and technological demand

High energy particle colliders have been in the forefront of particle physics for more than three decades. At present the near term US, European and internation

High energy particle colliders have been in the forefront of particle physics for more than three decades. At present the near term US, European and internation

The monumental discovery of the Higgs boson at the LHC marked the beginning of a new era in the high energy physics. Although the particle spectrum of the Stand