2004/09/30 by Xiao-Gang He, Chong-Sheng Li, Li-Lin Yang · 1 citation
Mathematics · Physics and Astronomy · #Algorithm #Artificial intelligence #Computer science #Mathematics #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.71.054006
published as Phys.Rev.D71:054006,2005 · RevTeX4, 5 pages, 6 eps figures. Minor changes, conclusions unchanged
arxiv created 2004/10/08 · openalex publication_date 2005/03/03 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Recently BABAR and Belle Collaborations have measured direct CP asymmetry ACP=\ensuremath-0.114\ifmmode±\else\textpm\fi0.020 in B0\ensuremath→K^\ensuremath-\ensuremathπ+. The experimental value is substantially different from the QCD factorization prediction. We show that supersymmetry flavor changing neutral current interaction via gluonic dipole can explain the difference. CP asymmetries in other B\ensuremath→K\ensuremathπ decays are predicted to be sizable. Taking this asymmetry as a constraint, we find that the allowed supersymmetry parameter space is considerably reduced compared with constraint from B\ensuremath→Xs\ensuremathγ alone. We also find the allowed time-dependent CP asymmetries Sf in B0\ensuremath→K*0\ensuremathγ\ensuremath→\ensuremathπ0KS\ensuremathγ and B0\ensuremath→\ensuremathφKS to be large. These predictions are quite different than those predicted in the standard model and can be tested in the near future.