2013/03/20 by A. Barroso, P. M. Ferreira, I. P. Ivanov +1 · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #False vacuum #Higgs boson #Large Hadron Collider #Metastability #Particle physics theoretical and experimental studies #Phenomenology (philosophy) #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #Two-Higgs-doublet model #Vacuum expectation value #hep-ph
paper · pdf · doi:10.1007/jhep06(2013)045
22 pages, 10 figures
arxiv created 2013/03/20 · openalex publication_date 2013/06/01 · arxiv updated 2015/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In the two Higgs doublet model, there is the possibility that the vacuum where the universe resides in is metastable. We present the tree-level bounds on the scalar potential parameters which have to be obeyed to prevent that situation. Analytical expressions for those bounds are shown for the most used potential, that with a softly broken Z2 symmetry. The impact of those bounds on the model's phenomenology is discussed in detail, as well as the importance of the current Large Hadron Collider results in determining whether the vacuum we live in is or is not stable. We demonstrate how the vacuum stability bounds can be obtained for the most generic CP-conserving potential, and provide a simple method to implement them.