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HK: Hadronen und Kerne

HK 18: Electromagnetic Probes III, Short Range NN-Correlations

HK 18.6: Talk

Monday, March 16, 1998, 18:45–19:00, F

Investigation of short-range nucleon-nucleon correlations using the reaction ¹⁶O(e,e′pp)¹⁴C in super-parallel kinematics^* — •M. Kahrau — Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, J.J.-Becher-Weg 45, D-55099 Mainz, Germany

To investigate nucleon-nucleon correlations, a high resolution experiment was performed at the three spectrometer facility at the Mainz Microtron MAMI. The two proton knockout reaction ¹⁶O(e,e′pp)¹⁴C was studied in super-parallel kinematics at a beam energy E_beam = 855 MeV, and a four-momentum transfer (ω,∣q∣) = (215 MeV, 316 MeV/c). The two protons were detected in large-acceptance magnetic spectrometers, parallel and anti-parallel to q. The excitation energy resolution in ¹⁴C was better than 1 MeV. Two-hole states were preferentially excited in the reaction. The momentum distributions of the 0⁺ ground state and the first excited 2⁺ and 1⁺ states are compared with recent unfactorized model calculations using realistic nucleon-nucleon potentials.

^* Supported by the Deutsche Forschungsgemeinschaft (SFB 201).