期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP06(2013)014
关键词
Beyond Standard Model; Technicolor and Composite Models
资金
- European Program Unification in the LHC Era [PITN-GA-2009-237920]
- Emergence-UPMC-2011 research program
We derive a dispersion relation for the S parameter in the SO(5)/SO(4) Minimal Composite Higgs model. This generalizes the Peskin-Takeuchi formula to the case when a light Higgs boson is present in the spectrum. Our result combines an IR effect due to the reduction in the Higgs boson couplings with a UV contribution from the strong sector. It also includes a finite matching term, achieving a very good relative accuracy O(m(h)/m(rho)). We apply our formula in several toy examples, modeling the UV spectral density via Vector Meson Dominance.
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