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Tree-level vacuum stability of two-Higgs-doublet models and new constraints on the scalar potential

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arxiv 1705.08965 v3 pith:JRGRGEGP submitted 2017-05-24 hep-ph

Xun-Jie Xu This is my paper · ORCID
classification hep-ph
keywords vacuumconditionconsideredconstraintsminimumpotentialscalarstudies
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The scalar potential of the two-Higgs-doublet model (2HDM) may have more than one local minimum and the usually considered vacuum could be located at one of them that could decay to another. This paper studies the condition that the usually considered vacuum is the global minimum which, combined with the bounded-from-below condition, will stabilize the vacuum at tree-level. We further apply these conditions to a specific 2HDM and obtain new constraints which could be important in phenomenological studies.

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  1. Higgs masses and couplings in the general 2HDM with unitarity bounds

    hep-ph 2019-09 conditional novelty 4.0 of 10

    In the general 2HDM with unitarity, bounded-from-below, and T parameter constraints, the Higgs triple coupling ranges up to 1.6 times the SM value and can be negative, while the quartic coupling remains positive and r...

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