1999/05/31 by Jin Min Yang · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1007/s100520100691
published as Eur.Phys.J.C20:553-562,2001 · results updated
arxiv created 1999/10/13 · openalex publication_date 2001/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We examined Zℓ+ℓ- and Zb b couplings in the minimal supersymmetric model (MSSM) with explicit R-parity violating interactions. We found the top quark L-violating couplings λ'i3k and B-violating couplings λ''3j3 could give significant contributions through the top quark loops. To accomadate the latest Rℓ data, λ'i3k are suject to stringent bounds, some of which can be much stronger than the current bounds. Within the current perturbative unitarity bound of 1.25 for λ''3j3, the Rb value in R-violating MSSM agrees well with the experimental data at 2σ level, but may lie outside the 1σrange depending on the involved sfermion mass.