Progress and perspectives in the low-energy kaon-nucleon/nuclei interaction studies at the DAΦNE collider

11th International Conference on Hyperons, Charm and Beauty Hadrons

Iliescu, M.^1,12 ; Bazzi, M.^1,12 ; Beer, G.^2,12 ; Berucci, C.^1,6 ; Bosnar, D.^12 ; Bragadireanu, A.M.^5 ; Cargnelli, M.^6 ; Curceanu, C.^1 ; D'Uffizi, A.^1 ; Fabietti, L.^10 ; Fiorini, C.^3,4 ; Ghio, F.^7 ; Guaraldo, C.^1 ; Hayano, R.S.^8 ; Ishiwatari, T.^6 ; Iwasaki, M.^9 ; Marton, J.^6 ; Okada, S.^9 ; Pietreanu, D.^5 ; Piscicchia, K.^1 ; Lener, M. Poli^1 ; Ponta, T.^5 ; Quaglia, R.^3,4 ; Vidal, A. Romero^11 ; Sandri, P. Levi^1 ; Sbardella, E.^1 ; Schembari, F.^3 ; Scordo, A.^1 ; Shi, H.^8 ; Sirghi, D.L.^1,5 ; Sirghi, F.^1,5 ; Tatsuno, H.^9 ; Tucakovic, I.^1 ; Doce, O. Vazquez^10 ; Widmann, E.^6 ; Wünschek, B.^6 ; Zmeskal, J.^6

INFN, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati (Roma)

I-00044, Italy^1

Department of Physics and Astronomy, University of Victoria, Victoria

BC, Canada^2

Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Milano, Italy^3

INFN Sezione di Milano, Milano, Italy^4

Horia Hulubei National Institute of Physics and Nuclear Engineering, Magurele, Romania^5

Stefan-Meyer-Institut für Subatomare Physik, Vienna, Austria^6

INFN Sezione di Roma I, Istituto Superiore di Sanità, Roma, Italy^7

University of Tokyo, Tokyo, Japan^8

RIKEN, Institute of Physics and Chemical Research, Saitama, Japan

(10) Technische Universität München, Physik Department, Garching, Germany

(11) University of Santiago de Compostela, Santiago de Compostela, Spain

(12) University of Zagreb, Zagreb, Croatia^9

关键词: De-excitations;    Interaction points;    Interaction studies;    Kaon nucleon scatterings;    Kaonic hydrogen;    Level transition;    Nuclear process;    Precise measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/556/1/012004/pdf
DOI  :  10.1088/1742-6596/556/1/012004

来源: IOP

【 摘 要 】

Low-energy QCD is still lacking experimental results, fundamental for reaching a good understanding of the strangeness sector. The information provided by the low energy kaon- nucleon/nuclei interaction is accessible through the study of kaonic atoms and kaonic nuclear processes. The lightest atomic systems, namely the kaonic hydrogen and the kaonic deuterium, provide the isospin dependent kaon-nucleon scattering lengths by measuring the X-rays emitted during their de-excitation to the 1s level. The most precise kaonic hydrogen measurement to date, together with an exploratory measurement of kaonic deuterium and of upper-level transitions in kaonic helium 3 and kaonic helium 4 were carried out at the DAΦNE collider by the SIDDHARTA collaboration. Presently, a significantly upgraded setup developped by the SIDDHARTA-2 collaboration is ready to perform a precise measurement of kaonic deuterium and, afterwards, of heavier exotic atoms. In parallel, the kaon-nuclei interaction at momenta below 130 MeV/c is studied by the AMADEUS collaboration, using the KLOE detector and a dedicated setup inserted in the central region, near the interaction point. Preliminary results of the study of charged antikaons interacting with nuclei are shown, including an analysis of the controversial Λ(1405).