2016/08/04 by Motoi Endo, Satoshi Mishima, Daiki Ueda +1 · 1 citation
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Chargino #Computer science #Constraint (computer-aided design) #Cosmology and Gravitation Theories #Geometry #Mathematics #Minimal Supersymmetric Standard Model #Particle physics #Particle physics theoretical and experimental studies #Physics #Stability (learning theory) #Supersymmetry #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2016.10.009
12 pages, 3 figures
arxiv created 2016/08/04 · openalex created_date 2016/08/23 · openalex publication_date 2016/10/15 · arxiv updated 2016/10/19 · openalex updated_date 2026/08/05
Recently, the standard model prediction of ϵ′/ϵ was improved, and a discrepancy from the experimental results was reported at the 2.9σ level. We study the chargino contributions to Z penguin especially with the vacuum stability constraint. The vacuum decay rate is investigated, and it is shown that the discrepancy can be explained if superparticles are lighter than 4–6 TeV. Correlations with B(KL→π0νν¯) and other experimental constraints are also discussed.