1)
Does the GGG interaction of the EFT contribute to ?
Remember than we are only looking at operators which will contribute at | Mathinline |
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| body | \mathcal{O}(1/\Lambda^2) |
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!
EFT Concepts:
1) Why doesn't the operator | Mathinline |
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| body | H^\dagger \tau^a H \tilde{W}_{\mu\nu} B^{\mu\nu} |
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interfere with SM in the cross section calculation for H -> 2 photons?
It has a different parity than the SM operators which! [Pointed out by Nick Kamp]
2) What's the smallest value of | Mathinline |
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| body | \Lambda_{\rm new\ physics} |
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consistent with experiments?
In general, it's around 1 TeV. When looking for EFT operators which produce specific effects (e.g. in flavor physics), it can be much higher.