Status of the measurement of KS → πeν branching ratio and lepton charge asymmetry with the KLOE detector

Daria Kamińska

doi:10.1051/epjconf/20148102007

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 81, 02007 (2014)
https://doi.org/10.1051/epjconf/20148102007

Status of the measurement of K_S → πeν branching ratio and lepton charge asymmetry with the KLOE detector

Daria Kamińska^a on behalf of the KLOE-2 collaboration

Institute of Physics, Jagiellonian University, ul. Reymonta 4, 30-059 Cracow, Poland

^a e-mail: daria.kaminska@uj.edu.pl

Published online: 26 November 2014

Abstract

We present the current status of the analysis of about 1.7 billion K_S K_L pair events collected at DAΦNE with the KLOE detector to determine the branching ratio of K_S → πeν decay and the lepton charge asymmetry. This sample is ∼ 4 times larger in statistics than the one used in the previous most precise result, from KLOE as well, allowing us to improve the accuracy on the measurement and related tests of CPT symmetry and ∆S = ∆Q rule.

© Owned by the authors, published by EDP Sciences, 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.