Holographic techni-dilaton at 125 GeV
Abstract
We find that a holographic walking technicolor model has a limit ("conformal limit") where the techni-dilaton (TD) becomes an exactly massless Nambu-Goldstone boson of the scale symmetry with its nonzero finite decay constant Fphi /= 0, which naturally realizes a light TD, say at 125 GeV, near the limit. In such a light TD case, we find that Fphi is uniquely determined by the techni-pion decay constant Fpi independently of the holographic parameters: Fphi/Fpi ~= sqrt2 NTF, with NTF being the number of techni-fermions. We show that the holographic TD is consistent with a new boson at 125 GeV recently discovered at the LHC.
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