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Differential cross section measurement of the 12C(e,e’pp)10Beg.s. reaction

Makek, M, Achenbach, P, Ayerbe Gayoso, C, Barbieri, C, Bernauer, JC, Bohm, R, Bosnar, D, Denig, A, Distler, MO, Friscic, I , Giusti, C, Merkel, H, Muller, U, Nungesser, L, Pochodzalla, J, Sanches Majos, S, Schlimme, BS, Schwamb, M and Walcher, T (2016) Differential cross section measurement of the 12C(e,e’pp)10Beg.s. reaction European Physical Journal A: Hadrons and Nuclei, 52.

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Abstract

The differential cross section was measured for the 12C(e,e’pp)10Beg.s. reaction at energy and momentum transfers of 163MeV and 198MeV/c, respectively. The measurement was performed at the Mainz Microtron by using two high-resolution magnetic spectrometers of the A1 Collaboration and a newly developed silicon detector telescope. The overall resolution of the detector system was sufficient to distinguish the ground state from the first excited state in 10 Be. We chose a super-parallel geometry that minimizes the effect of two-body currents and emphasizes the effect of nucleon-nucleon correlations. The obtained differential cross section is compared to the theoretical results of the Pavia reaction code in which different processes leading to two-nucleon knockout are accounted for microscopically. The comparison shows a strong sensitivity to nuclear-structure input and the measured cross section is seen to be dominated by the interplay between long- and short-range nucleon-nucleon correlations. Microscopic calculations based on the ab initio self-consistent Green’s function method give a reasonable description of the experimental cross section.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Makek, MUNSPECIFIEDUNSPECIFIED
Achenbach, PUNSPECIFIEDUNSPECIFIED
Ayerbe Gayoso, CUNSPECIFIEDUNSPECIFIED
Barbieri, CUNSPECIFIEDUNSPECIFIED
Bernauer, JCUNSPECIFIEDUNSPECIFIED
Bohm, RUNSPECIFIEDUNSPECIFIED
Bosnar, DUNSPECIFIEDUNSPECIFIED
Denig, AUNSPECIFIEDUNSPECIFIED
Distler, MOUNSPECIFIEDUNSPECIFIED
Friscic, IUNSPECIFIEDUNSPECIFIED
Giusti, CUNSPECIFIEDUNSPECIFIED
Merkel, HUNSPECIFIEDUNSPECIFIED
Muller, UUNSPECIFIEDUNSPECIFIED
Nungesser, LUNSPECIFIEDUNSPECIFIED
Pochodzalla, JUNSPECIFIEDUNSPECIFIED
Sanches Majos, SUNSPECIFIEDUNSPECIFIED
Schlimme, BSUNSPECIFIEDUNSPECIFIED
Schwamb, MUNSPECIFIEDUNSPECIFIED
Walcher, TUNSPECIFIEDUNSPECIFIED
Date : 27 September 2016
Identification Number : 10.1140/epja/i2016-16298-3
Copyright Disclaimer : The final publication is available at Springer via http://dx.doi.org/10.1140/epja/i2016-16298-3
Depositing User : Symplectic Elements
Date Deposited : 24 Oct 2016 14:24
Last Modified : 27 Sep 2017 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/812570

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