Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012)

The 4th of July 2012 was a historical moment for high-energy physics (HEP). On that day, CERN announced that both the ATLAS and CMS experiments had discovered a new Higgs-like boson. In this report, we shall assume that this newly found particle will turn out to be a Higgs boson, the key signature of the Standard Model. At the ICFA meeting on July 8 in Melbourne, an ICFA Beam Dynamics Workshop “Accelerators for a Higgs Factory: Linear vs. Circular” (HF2012) was approved. This workshop took place from November 14 to 16, 2012 at Fermilab, USA. (conferences.fnal.gov/hf2012) Seventy-one people from 31 institutions in Asia, Europe and North America attended.