Attracting the Electroweak Scale to a Tachyonic Trap
arXiv:2210.13484 · doi:10.1103/PhysRevD.107.L071701
Abstract
We propose a new mechanism to dynamically select the electroweak scale during inflation. An axion-like field that couples quadratically to the Higgs with a large initial velocity towards a critical point where the Higgs becomes massless. When crosses this point, it enters a region where the Higgs mass is tachyonic and this results into an explosive production of Higgs particles. Consequently, a back-reaction potential is generated and the field is attracted back to . After a series of oscillations around this point it is eventually trapped in its vicinity due to the periodic term of the potential. The model avoids transplanckian field excursions, requires very few e-folds of inflation and it is compatible with inflation scales up to . The mass of lies in the range of hundreds of GeV to a few TeV and it can be potentially probed in future colliders.
arXiv commentPublished version, minor changes
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