Physics at a Photon Collider
نویسنده
چکیده
The Photon Collider option of a Linear Collider (LC) is based on laser photon back-scattering on high energy electrons. The maximum photon energy is 205 GeV for a laser with λ = 1.06μm and an electron beam energy of 250 GeV. A high degree of polarisation with opposite helicities of the electron and the laser photon is crucial for obtaining a peaked spectrum of high energy polarised photons close to the maximum energy. In this case the high energy part of the γγ spectrum is dominated by the spin-0 configuration which is important to enhance the signal and suppress the background for Higgs production. Alternatively, eγ interactions are also possible. The technical aspects of the photon collider are discussed in [1,2].
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