2016/05/31 by Khiem Hong Phan, K. H. Phan, H. T. Hung +3 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Combinatorics #Higgs boson #Loop (graph theory) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1093/ptep/ptw158
published as Prog. Theor. Exp. Phys. (2016) 113B03 · Improved version accepted by PTEP. New discussions and references are added
openalex publication_date 2016/10/04 · arxiv created 2016/10/27 · arxiv updated 2016/11/17 · openalex created_date 2016/11/30 · openalex updated_date 2026/08/05
In calculating one-loop contributions to amplitudes of the lepton-flavor violating decays of the neutral Higgses (LFVHD) to different flavor charged leptons, the analytic expressions can be written in term of Passarino-Veltman functions. Then, they can be computed numerically by LoopTools Another approach is using suitable analytic expressions established for just this particular case. We compare numerical results obtained from LoopTools and those computed by different expressions that have been applied recently. Then we derive the preferable ones that are applicable for large ranges of free parameters introduced in extensions of the standard model. For illustration, the LFVHD in a simple model, which has been discussed recently, will be investigated more precisely. .........