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Experimental evaluation of the nuclear neutron-proton contact

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arxiv 1405.2734 v2 pith:QRXTJN2F submitted 2014-05-12 nucl-th cond-mat.quant-gas

classification nucl-thcond-mat.quant-gas
keywords contactnuclearneutron-protonconstantexperimentallevingerphotodisintegrationassuming
verification ladder T0 review T1 audit T2 compute T3 formal
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The nuclear neutron-proton contact is introduced, generalizing Tan's work, and evaluated from medium energy nuclear photodisintegration experiments. To this end we reformulate the quasi-deuteron model of nuclear photodisintegration and establish the bridge between the Levinger constant and the contact. Using experimental evaluations of Levinger's constant we extract the value of the neutron-proton contact in finite nuclei and in symmetric nuclear matter. Assuming isospin symmetry we propose to evaluate the neutron-neutron contact through measurement of photonuclear spin correlated neutron-proton pairs.

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