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Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 2: Hadronenstruktur und -spektroskopie

HK 2.2: Talk

Monday, March 19, 2012, 14:30–14:45, RW 2

Measurement of the spin correlation coefficients Ax,x and Ay,y in the pn→ {pp}s π reaction near the threshold at ANKE-COSY. — •Vera Shmakova — Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany — DLNP, JINR, Joliot-Curie 6, 141980 Dubna, Moscow region, Russia

A kinematically complete double polarization measurement of the pn→ {pp}s π process near the threshold has been performed recently at the ANKE-COSY spectrometer (Jülich). The experiment aimed to determine the spin correlation coefficients Ax,x and Ay,y in this process. These results will fascilitate further development of χ PT in this sector.

The transversely vector polarized deuteron beam and the hydrogen internal polarized ANKE target were used in the experiment. The pddπ0 process data were recorded concurrently and used for beam and target polarimetry. The first results of the data analysis will be presented.

Supported by the COSY-FFE program.

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