... SUSY models, is also encouraging. But, if SUSY candidates are discovered at LHC [4, 5, 6], the need to check in detail their properties in an international linear collider (ILC) will be overwhelming =-=[7, 8, 9]-=-. This note concerns the important option of ILC to run as a γγ collider ILCγγ, using back scattering of e ± -beams by laser photons [10, 11, 12]. In many instances, such a γγ collider is more efficie...

...er the moment where we will be able to see whether the simplest Standard Model (SM) higgs particle really exists [1], and whether the much searched for scale of New Physics (NP) lies in the TeV range =-=[2]-=-. Among the many such NP forms, the most widely studied is certainly N = 1 Supersymmetry (SUSY) in four dimensions. Hints supporting the minimal supersymmetric model (MSSM), with real electroweak scal...

... international linear collider (ILC) will be overwhelming [7, 8, 9]. This note concerns the important option of ILC to run as a γγ collider ILCγγ, using back scattering of e ± -beams by laser photons =-=[10, 11, 12]-=-. In many instances, such a γγ collider is more efficient for studying new physics, than the standard e − e + -ILC [13, 14, 15, 16]. A very important set of processes observable in ILCγγ, consists of ...

... of accuracy, should provide important checks of their nature. In studying (1), the independent helicity amplitudes have been expressed in terms of the simplest Veltman-Passarino functions B0, C0, D0 =-=[25]-=-. The resulting formulae are quite manageable for the γγ and γZ cases. For γγ → ZZ though, the analytic expressions of [22, 23], particularly for MSSM, are so complicated, that a public numerical code...