Even if we find the Higgs particle and confirm the standard model, there still remain 17 orders of magnitude to reach the energy of the creation of the universe. How significant then is JLC's step of one order of magnitude? Can we get insight into a deeper and more fundamental theory?
Recent precision experiments at TRISTAN, LEP, and SLC suggest supersymmetric grand unification, which can be tested unambiguously at JLC.
The supersymmetric grand unified theory (SUSY GUT) is believed to be valid up to the GUT scale of ~10^17GeV.
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