Nonperturbative Analysis of the Electroweak Phase Transition in the Two Higgs Doublet Model

2017/11/30 by Jens O. Andersen, Tyler Gorda, Andreas Helset +5 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevlett.121.191802

published as Phys. Rev. Lett. 121, 191802 (2018) · 13 pages, v2: references added, two loop scan results and discussion of dimension 6 operators added; v3: corrected minor errors in scanning, added discussion of model constraints; v4: title changed, further minor changes to body, added plot of effective potential, published in PRL

arxiv created 2018/11/20 · arxiv updated 2018/11/21

Abstract

We perform a nonperturbative study of the electroweak phase transition (EWPT) in the two Higgs doublet model (2HDM) by deriving a dimensionally reduced high-temperature effective theory for the model, and matching to known results for the phase diagram of the effective theory. We find regions of the parameter space where the theory exhibits a first-order phase transition. In particular, our findings are consistent with previous perturbative results suggesting that the primary signature of a first-order EWPT in the 2HDM is m_A0 > m_H0 + m_Z.

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