Observable effects of general new scalar particles

2014/12/31 by Jorge de Blas, M. Chala, Mikael Chala +4 · 6 citations
Mathematics · Physics and Astronomy · #Applied mathematics #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dimension (graph theory) #Gauge (firearms) #Geometry #Lagrangian #Matching (statistics) #Mathematical analysis #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Pure mathematics #Quantum mechanics #Scalar (mathematics) #Standard Model (mathematical formulation) #Statistics #Theoretical physics #Tree (set theory) #hep-ph #hep-th

paper · pdf · doi:10.1007/jhep04(2015)078

21 pages plus appendices, 28 tables. Improved discussion in Section 6. New references and comments. Minor corrections. Matches published version

openalex publication_date 2015/04/01 · arxiv created 2015/05/08 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We classify all possible new scalar particles that can have renormalizable linear couplings to Standard Model fields and therefore be singly produced at colliders. We show that this classification exhausts the list of heavy scalar particles that contribute at the tree level to the Standard Model effective Lagrangian to dimension six. We compute this effective Lagrangian for a general scenario with an arbitrary number of new scalar particles and obtain flavor-preserving constraints on their couplings and masses. This completes the tree-level matching of the coefficients of dimension five and six operators in the effective Lagrangian to arbitrary extensions of the Standard Model.

Citations

• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Electroweak constraints on see-saw messengers and their implications for LHC
• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Heavy quarks above the top at the Tevatron
• Distinguishing seesaw models at LHC with multi-lepton signals
• Electroweak corrections from triplet scalars
• Effects of new leptons in electroweak precision data
• Dimension-Six Terms in the Standard Model Lagrangian
• Reevaluation of the hadronic contributions to the muon g−2 and to α (M²_Z)
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The Effective Standard Model after LHC Run I
• How to use the Standard Model effective field theory
• Review of Multibody Charm Analyses
• Big-Bang Nucleosynthesis

Cited by

• The TeraZ Mirage: New Physics Lost in Blind Directions
• Standard Model Effective Field Theory: integrating out a generic scalar
• Maxi-sizing the trilinear Higgs self-coupling: how large could it be?
• Classifying standard model extensions effectively with precision observables
• LHC signals of radiatively-induced neutrino masses and implications for the Zee–Babu model
• Integrating out heavy fields in the path integral using the background-field method: general formalism