One-loop contributions to neutral minima in the inert doublet model
Abstract
The vacuum structure of the inert doublet model is analysed at the one-loop level using the effective potential formalism, to verify the validity of tree-level predictions for the properties of the global minimum. An inert minimum (with massive fermions) and an inert-like minimum (with massless fermions) can coexist at tree level. But the one-loop analysis reveals that the allowed parameter space for the coexistence of more than one minimum is larger than the tree-level expected one. It is also shown that for some choices of parameters, the global minimum found at the one-loop level may be inert (or inert-like), contrary to what the tree-level analysis indicates.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- April 2016
- DOI:
- 10.1007/JHEP04(2016)099
- arXiv:
- arXiv:1511.02879
- Bibcode:
- 2016JHEP...04..099F
- Keywords:
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- Beyond Standard Model;
- Higgs Physics;
- Spontaneous Symmetry Breaking;
- High Energy Physics - Phenomenology
- E-Print:
- 30 pages, 6 figures, v2: one reference added, v3: one figure and some comments added, matches published version