2023 Impact factor 4.2
Particles and Fields
Eur. Phys. J. C 28, 27-44 (2003)
DOI: 10.1140/epjc/s2002-01113-3

Higgs physics with a $\gamma \gamma$ collider based on CLIC 1

D. Asner1, H. Burkhardt2, A. De Roeck2, J. Ellis2, J. Gronberg1, S. Heinemeyer3, M. Schmitt4, D. Schulte2, M. Velasco4 and F. Zimmermann2

1  Lawrence Livermore National Laboratory, Livermore, California 94550, USA
2  CERN, 1211 Geneva 23, Switzerland
3  Brookhaven National Laboratory, Upton, New York, USA
4  Northwestern University, Evanston, Illinois 60201, USA

(Received: 20 November 2001 / Published online: 24 March 2003 )

We present the machine parameters and physics capabilities of the CLIC Higgs Experiment (CLICHE), a low-energy $\gamma \gamma$ collider based on CLIC 1, the demonstration project for the higher-energy two-beam accelerator CLIC. CLICHE is conceived as a factory capable of producing around 20,000 light Higgs bosons per year. We discuss the requirements for the CLIC 1 beams and a laser backscattering system capable of producing a $\gamma \gamma$ total (peak) luminosity of $2.0~(0.36) \times
10^{34}$  cm -2s -1 with $E_{CM}(\gamma \gamma) \sim 115$ GeV. We show how CLICHE could be used to measure accurately the mass, $\bar b b$, WW and $\gamma \gamma$ decays of a light Higgs boson. We illustrate how these measurements may distinguish between the Standard Model Higgs boson and those in supersymmetric and more general two-Higgs-doublet models, complementing the measurements to be made with other accelerators. We also comment on other prospects in $\gamma \gamma$ and $e^- \gamma$ physics with CLICHE.

© Società Italiana di Fisica, Springer-Verlag 2003