Eur. Phys. J. A (2010) 43: 137-143
https://doi.org/10.1140/epja/i2009-10902-7

Regular Article - Experimental Physics

Knockout of proton-neutron pairs from ¹⁶O with electromagnetic probes

¹ Kepler Centre for Astro and Particle Physics, Physikalisches Institut, Universität Tübingen, D-72076, Tübingen, Germany
² Department of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, Scotland, UK
³ Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, 351-0198, Wako, Japan
⁴ Dipartimento di Fisica Nucleare e Teorica dell’Università degli Studi di Pavia and Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, I-27100, Pavia, Italy
⁵ Institut für Kernphysik, Johannes-Gutenberg Universität Mainz, Johann-Joachim-Becher-Weg 45, D-55099, Mainz, Germany
⁶ School of Physics, University of Edinburgh, Edinburgh, UK

^* e-mail: duncan@pit.physik.uni-tuebingen.de

Received: 10 July 2009
Revised: 9 October 2009
Accepted: 20 November 2009
Published online: 19 December 2009

Abstract

After recent improvements to the Pavia model of two-nucleon knockout from ¹⁶O with electromagnetic probes the calculated cross-sections are compared to experimental data from such reactions. Comparison with data from a measurement of the ¹⁶O (e,e’ pn) reaction cross-section shows much better agreement between the experimental data and the results of the theoretical model than was previously observed. In a comparison with recent data from a measurement of the ¹⁶O ( ,pn) reaction cross-section the model over-predicts the measured cross-section at low missing momentum.