Low energy kaon-nuclei interaction studies through the \Sigma^0\pi^0 channel with the KLOE detector

TL;DR

This study uses existing KLOE detector data to investigate low-energy kaon interactions with nuclei, focusing on the \\Sigma^0\\pi^0 channel, to enhance understanding of kaon-nuclei physics.

Contribution

It presents the first analysis of KLOE data for low-energy kaon-nuclei interactions, specifically examining the \\Sigma^0\\pi^0 channel and the \\Lambda(1405) resonance.

Findings

Reconstructed \\Lambda(1116) via decay into proton and pion.

Analyzed \\Sigma^0\\pi^0 decay channel with preliminary results.

Explored K^- nuclear interactions in the KLOE detector environment.

Abstract

The AMADEUS experiment aims to perform precision studies in the sector of low-energy kaon-nuclei interaction at the DA\Phi NE collider at LNF-INFN, implementing a dedicated setup in the central region of the KLOE detector. As a first step towards the AMADEUS realization the existing KLOE data (runs from 2002 to 2005) were analysed using the detector itself as an active target. K^- nuclear interactions in the gas filling the KLOE drift chamber (Helium 90% and Isobutane 10%) and the drift chamber entrance wall (mainly Carbon) were explored. Starting point was the reconstruction of the \Lambda(1116) trough its decay into a proton and a pion (BR = 63.9 \pm 0.5%). Taking advantage of the good performances of the KLOE calorimeter in detecting photons we then focused on the investigation of the \Lambda(1405), through its decay into \Sigma^0\pi^0. The details of the \Sigma^0 \pi^0 analysis and preliminary results are presented.