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arXiv · 1209.2017

Holographic techni-dilaton at 125 GeV

Shinya Matsuzaki·Koichi Yamawaki
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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 F_phi /= 0, which naturally realizes a light TD, say at 125 GeV, near the limit. In such a light TD case, we find that F_phi is uniquely determined by the techni-pion decay constant F_pi independently of the holographic parameters: F_phi/F_pi ~= sqrt{2 N_TF}, with N_TF 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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Shinya Matsuzaki, Koichi Yamawaki. 2012-11-06. Holographic techni-dilaton at 125 GeV. https://doi.org/10.1103/physrevd.86.115004

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