Strong absorption of hadrons with hidden and open strangeness in nuclear matter
Creators: name: Adamczewski-Musch, J.
name: Arnold, O.
name: Atomssa, E. T.
name: Behnke, C.
name: Belounnas, A.
name: Belyaev, A.
name: Berger-Chen, J. C.
name: Biernat, J.
name: Blanco, A.
name: Blume, C.
name: Böhmer, M.
name: Chernenko, S.
name: Chlad, L.
name: Chudoba, P.
name: Ciepal, I.
name: Deveaux, C.
name: Dittert, D.
name: Dreyer, J.
name: Dybczak, A.
name: Epple, E.
name: Fabbietti, L.
name: Fateev, O.
name: Fonte, P.
name: Franco, C.
name: Friese, J.
name: Fröhlich, I.
name: Galatyuk, T.
name: Garzon, J. A.
name: Gernhäuser, R.
name: Golubeva, M.
name: Greifenhagen, R.
name: Guber, F.
name: Gumberidze, M.
name: Harabasz, S.
name: Heinz, T.
name: Hennino, T.
name: Höhne, C.
name: Holzmann, R.
name: Ierusalimov, A.
name: Ivashkin, A.
name: Kämpfer, B.
name: Kardan, B.
name: Koenig, I.
name: Koenig, W.
name: Kolb, B. W.
name: Korcyl, G.
name: Kornakov, G.
name: Kornas, F.
name: Kotte, R.
name: Kubos, J.
name: Kugler, A.
name: Kunz, T.
name: Kurepin, A.
name: Kurilkin, A.
name: Kurilkin, P.
name: Ladygin, V.
name: Lalik, R.
name: Lapidus, K.
name: Lebedev, A.
name: Linev, S.
name: Lopes, L.
name: Lorenz, M.
name: Mahmoud, T.
name: Maier, L.
name: Malige, A.
name: Markert, J.
name: Maurus, S.
name: Metag, V.
name: Michel, J.
name: Mihaylov, D. M.
name: Mikhaylov, V.
name: Morozov, S.
name: Müntz, C.
name: Münzer, R.
name: Naumann, L.
name: Nowakowsk, K.
name: Parpottas, Y.
name: Pechenov, V.
name: Pechenova, O.
name: Petukhov, O.
name: Pietraszko, J.
name: Prozorov, A. P.
name: Przygoda, W.
name: Ramstein, B.
name: Reshetin, A.
name: Rodriguez-Ramos, P.
name: Rost, A.
name: Sadovsky, A.
name: Salabura, P.
name: Scheib, T.
name: Schmidt-Sommerfeld, K.
name: Schuldes, H.
name: Schwab, E.
name: Scozzi, F.
name: Seck, F.
name: Sellheim, P.
name: Siebenson, J.
name: Silva, L.
name: Smyrski, J.
name: Spataro, S.
name: Spies, S.
name: Ströbele, H.
name: Stroth, J.
name: Strzempek, P.
name: Sturm, C.
name: Svoboda, O.
name: Szala, M.
name: Tlusty, P.
name: Traxler, M.
name: Tsertos, H.
name: Ungethüm, C.
name: Doce, O. Vazquez
name: Wagner, V.
name: Wendisch, C.
name: Wiebusch, M. G.
name: Wirth, J.
name: Zanevsky, Y.
name: Zumbruch, P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present the first observation of K- and ϕabsorption within nuclear matter by means of π- -induced reactions on C and W targets at an incident beam momentum of 1.7 GeV/c studied with HADES at SIS18/GSI. The double ratio (K-/K+)W / (K-/K+)C is found to be 0.319 \pm 0.009(stat)+0.014-0.012 (syst) indicating a larger absorption of K- in heavier targets as compared to lighter ones. The measured ϕ/K- ratios in π-+C and π^- +W reactions within the HADES acceptance are found to be equal to $0.55 \pm 0.03(stat)+0.06-0.07$ (syst) and to $0.63 \pm 0.05(stat)-0.11+0.11$ (syst), respectively. The similar ratios measured in the two different reactions demonstrate for the first time experimentally that the dynamics of the ϕmeson in nuclear medium is strongly coupled to the K- dynamics. The large difference in the ϕproduction off C and W nuclei is discussed in terms of a strong \phiN in-medium coupling.
description: 6 pages, 3 figures