Status of measurement of KS -> pi e nu branching ratio and lepton charge asymmetry with the KLOE detector

Abstract

We present the current status of the analysis of about 1.7 billion KSKL pair events collected at DAFNE with the KLOE detector to determine the branching ratio of KS -> pi e nu decay and the lepton charge asymmetry. This sample is ~4 times larger in statistics than the one used in a previous KLOE analysis, allowing us to improve the accuracy of the measurement and of the related tests of CPT symmetry and Delta S = Delta Q rule.

Talk given at the 4th Young Researchers Workshop "Physics Challenges in the LHC Era", Frascati, May 12 and 15, 2014 (6 pages)