Reach of future colliders in probing the structure of the photon
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A comparison of the potentials of ep and e^+e^-$machines to probe the structure of the photon is performed. In particular, the kinematic reach of a proposed future ep facility, THERA, is compared with those of current colliders, LEP and HERA, and with the proposed linear collider, TESLA. THERA like HERA will use a proton beam of 920 GeV but with an increased electron beam energy of 250 GeV allowing higher scales, Q^2, and lower values of parton momentum fraction in the photon, x_γ, to be probed.
5 pages, 2 figures. To appear in "The THERA Book", DESY-LC-REV-2001-062. IFT 2001/13
5 pages, 2 figures. To appear in "The THERA Book", DESY-LC-REV-2001-062. IFT 2001/13