autor: |
Curceanu C., Piscicchia K., Bazzi M., Berucci C., Bosnar D., Bragadireanu A. M., Clozza A., Cargnelli M., D'Uffizi A., Fabbietti L., Fiorini C., Ghio F., Guaraldo C., Iliescu M., Sandri P. Levi, Marton J., Pietreanu D., Lener M. Poli, Quaglia R., Vidal A. Romero, Sbardella E., Scordo A., Shi H., Sirghi D., Sirghi F., Skurzok Magdalena , Tucakovic I., Doce O. Vazquez, Widmann E., Zmeskal J. |
abstrakt w j. angielskim: |
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 $\Lambda$ (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 DA$\Phi$NE collider, which provides a unique source of monochromatic low-momentum kaons and exploits the KLOE detector as an active target, in order to obtain excellent acceptance and resolution data for $K^{−}$ nuclear capture on $H, ^{4}He, ^{9}Be$ and $^{12}C$, both at-rest and in-flight. During the second half of 2012, a successful data taking was performed with a dedicated pure carbon target implemented in the central region of KLOE, providing a high statistic sample of pure at-rest $K^{−}$ nuclear interactions. For the future, dedicated setups involving cryogenic gaseous targets are under preparation. |