Electroweak Baryogenesis with a Supersymmetric Sector

Abstract

We study a model with an exotic new sector strongly coupled to the Higgs boson, in which supersymmetry is introduced to protect the quartic coupling from a large running and avoid potential vacuum stability problem. The fermionic components present vector like mass terms, through which the Higgs diphoton decay branching ratio can be tuned. The bosonic components trigger a strongly first order electroweak phase transition. We find a large parameter region of effective Yukawa coupling $y\gtrsim 2$ and mass parameters $m_f\sim m_s$ of a few hundred GeV, that can simultaneously accommodate the diphoton excess and electroweak baryogenesis, without vacuum stability and electroweak precision measurement problems.

10 pages, 9 figures

References in corpus (12)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC
• Modified Higgs Sectors and NLO Associated Production
• Electroweak Phase Transition, Higgs Diphoton Rate, and New Heavy Fermions
• Custodial Leptons and Higgs Decays
• Probing Charged Matter Through Higgs Diphoton Decay, Gamma Ray Lines, and EDMs
• Higgs diphoton rate and mass enhancement with vector-like leptons and the scale of supersymmetry
• A Supersymmetric Theory of Vector-like Leptons
• $SU(2)\otimes SU(2)$ Gauge Extensions of the MSSM Revisited
• Inspecting the Higgs for New Weakly Interacting Particles

Cited by in corpus (2)

• New Insights of Electroweak Phase Transition in NMSSM
• Standard Model Effective Field Theory: Integrating out Neutralinos and Charginos in the MSSM