Global Electroweak Symmetric Vacuum
arXiv:2103.09819 · doi:10.1007/JHEP07(2021)225
Abstract
Although the Higgs potential in the Standard Model (SM) contains only a simple electroweak symmetry breaking vacuum in the small field region, additional metastable or global vacua could exist in models beyond the SM. In this paper, we study one intriguing scenario with an additional electroweak symmetric vacuum that could be the global one. For the thermal universe ending at the current metastable vacuum, the electroweak symmetry should stay non-restored at high temperatures. We realize the scenario in a model with Higgs-portal couplings to SM singlet scalars with approximately global O(N) symmetries with a large N. For a large portion of model parameter space, both the quantum and thermal tunneling rates are suppressed such that our current metastable vacuum is long-lived enough. Our scenario predicts order-one changes for the Higgs self-couplings and a large contribution to the signal of the off-shell Higgs invisible decay. It can be partly probed at the LHC Run 3 and well tested at the high luminosity LHC. We also discuss the subcritical (anti-de Sitter) bubbles from the thermal tunneling that could have a large population and interesting cosmological implications.
arXiv comment38 pages, 9 figures; v2: references added, final version in JHEP
References in corpus (40)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- The anti-k_t jet clustering algorithm
- de Sitter Vacua in String Theory
- FeynRules 2.0 - A complete toolbox for tree-level phenomenology
- Quantization of Four-form Fluxes and Dynamical Neutralization of the Cosmological Constant
- Higgs mass and vacuum stability in the Standard Model at NNLO
- Progress in Electroweak Baryogenesis
- The statistics of string/M theory vacua
- LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
- Electroweak Bubble Wall Speed Limit
- Dynamics of Non-renormalizable Electroweak Symmetry Breaking
- The cosmological Higgstory of the vacuum instability
- Advances in perturbative thermal field theory
- Towards an all-orders calculation of the electroweak bubble wall velocity
- Higgs boson potential at colliders: status and perspectives
- Bubble wall velocity: heavy physics effects
- A global view on the Higgs self-coupling at lepton colliders
- IS THERE A DOMAIN WALL PROBLEM?
- FindBounce: package for multi-field bounce actions
- Is there a monopole problem?
- High Scale Electroweak Phase Transition: Baryogenesis & Symmetry Non-Restoration
- A Global View of the Off-Shell Higgs Portal
- Thermal Order in Conformal Theories
- Probing the scalar potential via double Higgs boson production at hadron colliders
- Triple Higgs boson production at a 100 TeV proton-proton collider
- Unrestored Electroweak Symmetry
- Constraints on the quartic Higgs self-coupling from double-Higgs production at future hadron colliders
- Constraining the Higgs self couplings at colliders
- Scrutinizing the Higgs quartic coupling at a future 100 TeV proton-proton collider with taus and b-jets
- Electroweak Baryogenesis above the Electroweak Scale
- Triple Higgs boson production to six -jets at a 100 TeV proton collider
- Probing triple-Higgs productions via decay channel at a 100 TeV hadron collider
- Electroweak Symmetric Dark Matter Balls
- Gedanken Worlds without Higgs: QCD-Induced Electroweak Symmetry Breaking
- Probing Quartic Higgs Self-Interaction
- New Physics in multi-Higgs boson final states
- Modeling Thermal Fluctuations: Phase Mixing and Percolation
- On the Validity of the Effective Potential and the Precision of Higgs Self Couplings