Near threshold eta meson production in dp collisions
C. Piskor-Ignatowicz, J. Smyrski, P. Moskal, H.-H. Adam, A., Budzanowski, E. Czerwinski, R. Czyzykiewicz, D. Gil, D. Grzonka, M. Janusz,, L. Jarczyk, B. Kamys, A. Khoukaz, P. Klaja, J. Majewski, W. Oelert, J., Przerwa, J. Ritman, T. Rozek, T. Sefzick, M. Siemaszko, A. Taeschner
TL;DR
This paper reports preliminary measurements of eta meson production in deuteron-proton collisions near threshold energies, highlighting the influence of final state interactions on the cross section.
Contribution
It presents new experimental data on eta meson production at near threshold energies using the COSY-11 detector system.
Findings
Energy dependence confirms strong final state interaction effects.
Cross section increases near threshold energies.
Data supports theoretical models of meson production.
Abstract
Preliminary results of recent measurements of the near threshold eta meson production in the dp-->dp eta reaction are presented. The experiment was performed at the COSY-Juelich accelerator with the use of the COSY-11 detection system. Data were taken for three values of deuteron beam momenta corresponding to excess energies of 3.2, 6.1 and 9.2 MeV. The energy dependence of the total cross section confirms a strong effect of the final state interaction.
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