2008/07/31 by Stefan Antusch, Jochen P. Baumann, Jochen P Baumann +2 · 12 citations
Mathematics · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Dark matter #Dimension (graph theory) #Fermion #Lepton #Lepton number #Mathematics #Neutrino #Neutrino Factory #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Sterile neutrino #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2008.11.018
published as Nucl.Phys.B810:369-388,2009 · Discussion clarified, figures and references added; results and conclusions unchanged; version to appear in Nucl. Phys. B
openalex publication_date 2008/11/22 · arxiv created 2008/11/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate how non-standard neutrino interactions (NSIs) with matter can be generated by new physics beyond the Standard Model (SM) and analyse the constraints on the NSIs in these SM extensions. We focus on tree-level realisations of lepton number conserving dimension 6 and 8 operators which do not induce new interactions of four charged fermions (since these are already quite constrained) and discard the possibility of cancellations between diagrams with different messenger particles to circumvent experimental constraints. The cases studied include classes of dimension 8 operators which are often referred to as examples for ways to generate large NSIs with matter. We find that, in the considered scenarios, the NSIs with matter are considerably more constrained than often assumed in phenomenological studies, at least O(10−2). The constraints on the flavour-conserving NSIs turn out to be even stronger than the ones for operators which also produce interactions of four charged fermions at the same level. Furthermore, we find that in all studied cases the generation of NSIs with matter also gives rise to NSIs at the source and/or detector of a possible future Neutrino Factory.