pK+\Lambda final state: towards the extraction of the ppK- contribution

TL;DR

This paper investigates the pK+Λ final state in proton-proton collisions at 3.5 GeV to search for kaonic bound states like ppK-, emphasizing the role of the Λ(1405) resonance and proposing partial wave analysis for better disentanglement of contributions.

Contribution

It introduces a detailed analysis of the pK+Λ final state, compares experimental data with simulations, and discusses the potential of partial wave analysis to identify kaonic bound states.

Findings

Deviation method comparison with DISTO collaboration

Observation of Λ(1405) as a doorway to kaonic states

Proposal for partial wave analysis to disentangle contributions

Abstract

The reaction p(@3.5\,GeV)+p -> p+\Lambda + K^+ can be studied to search for the existence of kaonic bound states like ppK^- leading to this final state. This effort has been motivated by the assumption that in p+p collisions the \Lambda(1405) resonance can act as a doorway to the formation of the kaonic bound states. The status of this analysis within the HADES collaboration, with particular emphasis on the comparison to simulations, is shown in this work and the deviation method utilized by the DISTO collaboration in a similar analysis is discussed. The outcome suggests the employment of a partial wave analysis to disentangle the different contributions to the measured pK^+\Lambda final state.