2005/04/30 by The Belle Collaboration, K. F. Chen, F. Fang +96 · 3 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevd.72.012004
published as Phys.Rev.D72:012004,2005 · 25 pages, 5 figures, submitted to Phys. Rev. D
openalex publication_date 2005/07/08 · arxiv created 2005/07/15 · arxiv updated 2009/12/01 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/30
We present new measurements of CP-violation parameters in B0\ensuremath→\ensuremathφK0, K+K^\ensuremath-KS0, f0(980)KS0, \ensuremathη^\ensuremath'KS0, \ensuremathωKS0, and KS0\ensuremathπ0 decays based on a sample of 275\ifmmode×\else\texttimes\fi106 BB pairs collected at the \ensuremathΥ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e^\ensuremath- collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. The combined result for the B0\ensuremath→\ensuremathφK0, K+K^\ensuremath-KS0, f0(980)KS0, \ensuremathη^\ensuremath'KS0, \ensuremathωKS0, KS0\ensuremathπ0, and previously reported KS0KS0KS0 decays differs from the SM expectation by 2.4 standard deviations.