Unprecedented Studies of the Low-energy Negatively Charged Kaons Interactions in Nuclear Matter by AMADEUS

Abstract

The AMADEUS experiment aims to provide unique quality data of K − hadronic interactions in light nuclear targets, in order to solve fundamental open questions in the non-perturbative strangeness QCD sector, like the controversial nature of the Λ(1405) state, the yield of hyperon formation below threshold, the yield and shape of multi-nucleon K − absorption, processes which are intimately connected to the possible existence of exotic antikaon multi-nucleon clusters. AMADEUS takes advantage of the DAΦNE collider, which provides a unique source of monochromatic lowmomentum kaons and exploits the KLOE detector as an active target, in * Acta Physica Polonica B(1) arXiv:1501.05781v1 [nucl-ex]

Formation of ${\mit \Sigma } \pi $ Pairs in Nuclear Captures of $K^-$ Mesons

“…see References [10,11,12]. The experimental investigation of negative kaons absorption on 12 C (and similar studies on 4 He) make an extension of the former results, offering better precision and higher statistics.…”

Search for Deeply Bound Kaonic Nuclear States in the AMADEUS Experiment

“…The method is based on the exclusive measurement of the momentum, angular and invariant mass spectra for correlated Σ 0 /Λp, Σ 0 /Λd, Σ 0 /Λt pairs [17]. Possible DBKNS may be produced with K − stopped in helium or carbon and then decaying into considered decay channels.…”

Search for Deeply Bound Kaonic Nuclear States with AMADEUS

“…The AMADEUS group has developed a method with a high probability for the discovery of DBKNS corresponding to K − pp , K − ppn and K − ppnn kaonic nuclear clusters and their decays to Σ 0 /Λp, Σ 0 /Λd and Σ 0 /Λt, respectively. The method is based on the exclusive measurement of the momentum, angular and invariant mass spectra for correlated Σ 0 /Λp, Σ 0 /Λd, Σ 0 /Λt pairs [18]. Possible DBKNS may be produced with K − stopped in helium or carbon and then decaying into the considered decay channels.…”