Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP08(2013)033
Keywords
Higgs Physics; Beyond Standard Model; Renormalization Group
Categories
Funding
- CERN
- Spanish Consolider Ingenio Programme CPAN [CSD2007-00042]
- Spanish Ministry MICNN [FPA2010-17747, FPA2011-25948]
- Generalitat de Catalunya grant [2009SGR894]
- ICREA Academia Program
- Spanish Ministry MECD through the FPU grant [AP2010-3193]
- ICREA Funding Source: Custom
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The discovery of the Higgs boson has opened a new window to test the SM through the measurements of its couplings. Of particular interest is the measured Higgs coupling to photons which arises in the SM at the one-loop level, and can then be significantly affected by new physics. We calculate the one-loop renormalization of the dimension-six operators relevant for h -> gamma g, gZ, which can be potentially important since it could, in principle, give log-enhanced contributions from operator mixing. We find however that there is no mixing from any current-current operator that could lead to this log-enhanced effect. We show how the right choice of operator basis can make this calculation simple. We then conclude that h -> gamma g, gZ can only be affected by RG mixing from operators whose Wilson coefficients are expected to be of one-loop size, among them fermion dipole-moment operators which we have also included.
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