Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 24: Hadronenstruktur und -spektroskopie VI
HK 24.7: Vortrag
Dienstag, 22. März 2011, 18:15–18:30, C-2
Recent Results from the Deuteron Charge–Exchange on Hydrogen Programme at ANKE/COSY — •David Mchedlishvili — Institut für Kernphysik, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — High Energy Physics Institute, Tbilisi State University, 0186 Tbilisi, Georgia
A good understanding of the Nucleon–Nucleon interaction (NN) remains one of the most important goals of nuclear and hadronic physics. Apart from their intrinsic importance for the study of nuclear forces, NN data are necessary ingredients in the modelling of meson production and other nuclear reactions at intermediate energies.
Experiments at COSY, using a polarised deuteron beam and/or target, can lead to significant improvements in the np database by studying the quasi–free reaction on the neutron in the deuteron - dp → {pp}n. At low excitation energies of the final pp system, typically Epp<3 MeV, the spin observables are directly related to the spin–dependent parts of the neutron–proton charge–exchange amplitudes. Measurement of the deuteron–proton spin–correlations allows one also to fix the relative phases of these amplitudes in addition to their overall magnitudes. Recent results of this study at ANKE/COSY are presented, including preliminary data on dp →{pp}Δ0.
Supported by the COSY-FFE program.