Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861443 | Physics Letters B | 2005 | 12 Pages |
Abstract
Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay KSâ3Ï0 has been performed. From a fit to the lifetime distribution of about 4.9 million reconstructed K0/K¯0â3Ï0 decays, the CP violating amplitude η000=A(KSâ3Ï0)/A(KLâ3Ï0) has been found to be Re(η000)=â0.002±0.011±0.015 and Im(η000)=â0.003±0.013±0.017. This corresponds to an upper limit on the branching fraction of Br(KSâ3Ï0)<7.4Ã10â7 at 90% confidence level. The result is used to improve knowledge of Re(ε) and the CPT violating quantity Im(δ) via the Bell-Steinberger relation.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
NA48 Collaboration NA48 Collaboration, A. Lai, D. Marras, J.R. Batley, R.S. Dosanjh, T.J. Gershon, G.E. Kalmus, C. Lazzeroni, D.J. Munday, E. Olaiya, M.A. Parker, T.O. White, S.A. Wotton, R. Arcidiacono, G. Barr, G. Bocquet, A. Ceccucci,