Conveners
Parallel session B1
- Johan Messchendorp (GSI Helmholtzzentrum für Schwerionenforschung GmbH)
The kaonic nuclei, the antikaon($\bar{K}$)-nuclear quasibound states via the strong interaction, is one of the most interesting topics in nuclear hadron physics. Especially, the simplest system, $\bar{K}NN$ nucleus, has been studied both theoretically and experimentally as a first step to understand the structure and properties of the kaonic nuclei.
Among the experimental searches, the peak...
Hadron-hadron interaction has been one of the most important topics in hadron physics, because it contains information on the quark dynamics inside hadrons, which will be a hint to understand the fundamental theory of strong interaction, quantum chromodynamics (QCD). Among various pairs of two hadrons, the $\bar{K} N$ system is one of the most interesting. It is well known that the $\bar{K}...
In a recent paper [1], we generalized our chirally motivated $\pi\Sigma - \bar{K}N$ coupled channels model [2] to the cubic finite volume and used it to calculate the stationary energy spectrum that appears in a nice agreement with the spectrum obtained in the lattice QCD simulations by the BaSc collaboration [3, 4]. Interestingly, the hadron masses used by the BaSc collaboration were also...
The nature of the $\mathrm{\Lambda(1405)}$ hyperon remains one of the longstanding open questions in hadron physics. Since its prediction and discovery in the 1960s, its structure is still widely debated. With a mass located below the $\mathrm{\bar{K}N}$ threshold, it cannot be explained within the constituent quark model. Furthermore, its line shape deviates from a Breit–Wigner distribution...
This talk presents the study of the strangeness production mechanisms in the reaction $pp \to ppK^{+}K^{-}$ reaction, analyzed using data collected with the HADES detector and a 4.5 GeV proton beam. The event selection is based on the particle identification, employing a domain-adversarial neural network, and a kinematic refit imposing four-momentum conservation. This results in the purity of...
