One-loop radiative corrections to the ρ parameter in the littlest Higgs model
By Mu-Chun Chen, S. Dawson. 2003
143 citations recorded by the source corpus.
We perform a one-loop analysis of the rho parameter in the Littlest Higgs model, including the logarithmically enhanced contributions from both fermion and scalar loops. We find the one-loop contributions are comparable to the tree level corrections in some regions of parameter space. The fermion loop contribution dominates in the low cutoff scale f region. On the other hand, the scalar loop contribution dominates in the high cutoff scale f region and it grows with the cutoff scale f. This in turn implies an upper bound on the cutoff scale. A low cutoff scale is allowed for a non-zero triplet VEV. Constraints on various other parameters in the model are also discussed. The role of triplet scalars in constructing a consistent renormalization scheme is emphasized.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b72bcec816902d5ddee2187e50185cfd8289cc77
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In Nuclear and High Energy Physics
- I. Low
- Hsin-Chia Cheng
- E. Furlan
- S. Dawson
- M. Schmaltz
- David Tucker-Smith
- Konstantin T. Matchev
- T. Hambye
Citations in the corpus
- Little hierarchy, little higgses, and a little symmetry (2004, background): “The electroweak observables also receive contributions from the new TeV particles in little Higgs theories, and there have been several studies on this issue for various little Higgs models [19, 20, 21, 22, 23, 24, 25, 26, 27].”
- LITTLE HIGGS THEORIES (2005, unknown): “low f, and so it is possible to have only mild fine tuning even with large values of f. For more on the indirect effects of new particles in little Higgs theories, we refer the reader to the literature [42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53]. Although there is parameter space in which the sim”
- A Higgs conundrum with vector fermions (2012, background): “γμf2V μ , (64) for V = W,Z, γ are [21, 67] ΠXY = − Nc 16π2 { 2 3 (”