2000/06/30 by Santiago Peris, Eduardo de Rafael · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(00)00977-1
published as Phys.Lett.B490:213-222,2000 · 10 pages, LateX, 2 figures. New hadronic function with triple poles. Improved interpolation between short and long distances. Discussion changed accordingly. Slight changes in final numerical result
openalex publication_date 2000/10/01 · arxiv created 2001/03/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present the result for the invariant BK factor of K0-anti-K0 mixing in the chiral limit and to next-to-leading order in the 1/Nc expansion. We explicitly demonstrate the cancellation of the renormalization scale and scheme dependences between short- and long-distance contributions in the final expression. Numerical estimates are then given, by taking into account increasingly refined short- and long-distance constraints of the underlying QCD Green's function which governs the BK factor.