1996/02/14 by M. Hirsch, H. V. Klapdor‐Kleingrothaus, H. V. Klapdor-Kleingrothaus +2 · 2 citations
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Computer science #Energy (signal processing) #Environmental science #Leptoquark #Low energy #Nuclear physics #Particle Accelerators and Free-Electron Lasers #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ph
paper · pdf · doi:10.1016/0370-2693(96)00419-4
published as Phys.Lett. B378 (1996) 17-22 · LaTeX, 9 pages, no figures
arxiv created 1996/02/14 · openalex publication_date 1996/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discuss an extension of the standard model (SM) with vector and scalar leptoquarks. The renormalizable leptoquark Lagrangian consistent with the SM gauge symmetry is presented including the leptoquark-Higgs interactions previously not considered in the literature. We discuss the importance of these new interactions for leptoquark phenomenology. After the electro-weak symmetry breaking they generate non-trivial leptoquark mass matrices. These lead to mixing between different SU(2)L-multiplets of the leptoquarks and induce at low energies new effective 4-fermion lepton-quark vertices. The latter affect the standard leptoquark phenomenology. We discuss constraints on these interactions from the helicity-suppressed π→ ν+ e decay.