Latest discrete symmetries and Quantum Mechanics studies with KLOE-2

D Kamińska

doi:10.1088/1742-6596/800/1/012011

Abstract

The KLOE-2 experiment at the INFN Laboratori Nazionali di Frascati (LNF) is currently taking data at the upgraded e+e− DAFNE collider, representing the continuation of KLOE with a new physics program including kaon interferometry and test of discrete symmetries among the main topics. In fact entangled neutral kaon pairs produced at DAFNE are a unique tool to probe discrete symmetries and/or QM basic principles at the utmost precision. The status of the latest ongoing analyses on KLOE data using the most refined analyses tools will be presented and discussed including prospects for KLOE-2: (i) search for decoherence and CPT violation effects in the ϕ → KSKL → π+π−π+π− decay, (ii) test of CP and CPT symmetries in Ks semileptonic decays, (iii) test of Time reversal and CPT in transitions in ϕ → KSKL → πeυ, 3π0 (2π0) decays, (iv) study of the KS → π+π−π0 decay.

Highlights

The above mentioned studies are performed on data collected by the KLOE detector, which surrounds e+ and e− beams interaction point
More than 105 of KS → πeν decays were reconstructed and will be used to determine the charge asymmetry and branching ratio for KS semileptonic decays. Another two-kaon observable sensitive to the real part of CPT symmetry violation term is defined by using ratios of probabilities of transitions constructed for KL → 3π0 decay accompanied by KS → πeν and its CPT-conjugated partner KLKS → πeν π+π− [6]: R2,4(∆t)
The neutral kaon system is an excellent laboratory for the study of CPT symmetry and the basic principles of Quantum Mechanics

Summary

Introduction

The above mentioned studies are performed on data collected by the KLOE detector, which surrounds e+ and e− beams interaction point. The detector collected in total about 2.5 fb−1 of data in two runs in the year 2001-2002 and 2004-2005, with loose trigger conditions which allows to a broad physics program. 2. The Quantum Decoherence and CP, CPT and Lorentz Symmetries

Results

Conclusion