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Smet, Filip De; Ferdinande, H.; Vyver, R. Van de; Hoorebeke, Luc Van; Ryckbosch, D.; Abeele, C. Van den; Dias, Johnny Ferraz; Ryckebusch, Jan

doi:10.1103/physrevc.47.652

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…7 with the experimental data of Refs. [60][61][62]71]. The agreement between data and the cross section obtained by using the optical potential is remarkable.…”

Section: Testing the Direct Knock-out Modelmentioning

confidence: 85%

Short-Range Correlations and Meson Exchange Currents in Photonucleon Emission

et al. 2002

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One-nucleon emission processes induced by photon absorption are studied by considering shortrange correlation effects. At energies above the giant resonance region the validity of the direct knockout model has been tested by comparison with continuum random phase approximation results. Nucleon re-scattering effects have been considered by using an optical potential. The role of the electromagnetic convection, magnetization, and meson exchange currents has been investigated as a function of both excitation energy and momentum transfer. The short-range correlation effects have been studied by using various correlation functions. We found that the nucleon photo-emission cross section is rather sensitive to the presence of short-range correlations at large values of nucleon emission angle. In this region, however, the effects of meson exchange currents are even larger than those produced by short-range correlations. C 2002 Elsevier Science (USA)

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“…7 with the experimental data of Refs. [60][61][62]71]. The agreement between data and the cross section obtained by using the optical potential is remarkable.…”

Section: Testing the Direct Knock-out Modelmentioning

confidence: 85%

Short-Range Correlations and Meson Exchange Currents in Photonucleon Emission

et al. 2002

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“…1. The experimental data are taken from [37] (black circles), [38] (open circles) and [39] (triangles). The theoretical results have been multiplied by the reduction factors extracted in [16] in comparison with (e, e ′ p) data, that is 0.8 for 1/2 − and 0.62 for 3/2 − .…”

Section: N Reactionmentioning

confidence: 99%

Meson exchange currents in electromagnetic one-nucleon emission

Giusti

Pacati

2003

Phys. Rev. C

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The role of meson exchange currents (MEC) in electron- and photon-induced one-nucleon emission processes is studied in a nonrelativistic model including correlations and final state interactions. The nuclear current is the sum of a one-body and of a two-body part. The two-body current includes pion seagull, pion-in-flight and the isobar current contributions. Numerical results are presented for the exclusive 16O(e,e'p)15N and 16O(\gamma,p)15N reactions. MEC effects are in general rather small in (e,e'p), while in (\gamma,p) they are always large and important to obtain a consistent description of (e,e'p) and (\gamma,p) data, with the same spectroscopic factors. The calculated (\gamma,p) cross sections are sensitive to short-range correlations at high values of the recoil momentum, where MEC effects are larger and overwhelm the contribution of correlations.Comment: 9 pages, 6 figure

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“…Therefore we have performed calculations at E γ = 60 and 72 MeV, where 16 O(γ, p) data are available for the transition to the 1/2 − ground state [46][47][48] and to the 3/2 − excited state at 6.3 MeV [48]. At The DWIA calculations with different overlap functions exhibit considerable differences, in particular at backward angles, where larger values of p m are probed.…”

Section: B the 16 O(γ P) Reactionmentioning

confidence: 99%