This paper is a summary report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012). It discusses four types of accelerators as possible candidates for a Higgs factory: linear e+e- colliders, circular e+e- colliders, muon collider and photon colliders. The comparison includes: physics reach, performance (energy and luminosity), upgrade potential, technology maturity and readiness, and technical challenges requiring further R&D.
@article{arxiv.1302.3318,
title = {Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012)},
author = {Alain Blondel and Alex Chao and Weiren Chou and Jie Gao and Daniel Schulte and Kaoru Yokoya},
journal= {arXiv preprint arXiv:1302.3318},
year = {2013}
}