Nucleon-nucleon correlations and two-nucleon currents in exclusive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>(</mml:mo><mml:mi>e</mml:mi><mml:mo>,</mml:mo><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi><mml:mo>)</mml:mo></mml:math>reactions

Knödler, D.; Müther, H.; Czerski, P.

doi:10.1103/physrevc.61.064603

Cited by 7 publications

(11 citation statements)

References 25 publications

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“…distorted wave functions, eigenfunctions of a complex phenomenological optical potential which contains a central, a Coulomb, and a spin-orbit term [19]. The effect of the mutual interaction between the two outgoing nucleons has been studied in [7,8,20] and can in principle be included as in [7,8].…”

Section: Reaction Mechanism and Center-of-mass Effectsmentioning

confidence: 99%

Center-of-mass effects in electromagnetic two-proton knockout reactions

et al. 2007

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The role of center-of mass (CM) effects in the one-body nuclear current in the description of electromagnetically induced two-nucleon knockout reactions is discussed in connection with the problem of the lack of orthogonality between initial bound states and final scattering states obtained by the use of an energy-dependent optical model potential. Results for the cross sections of the exclusive 16 O(e,e ′ pp) 14 C and 16 O(γ,pp) 14 C knockout reactions in different kinematics are presented and discussed. In super-parallel kinematics CM effects produce a strong enhancement of the 16 O(e,e ′ pp) 14 Cg.s. cross section which strongly reduces the destructive interference between the one-body and ∆-current and the sensitivity to the treatment of the ∆-current found in previous work.PACS numbers: 21.60-n Nuclear structure models and methods -25.20Lj Photoproduction reactions -25.30Fj Inelastic electron scattering to continuum

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Section: Reaction Mechanism and Center-of-mass Effectsmentioning

confidence: 99%

Center-of-mass effects in electromagnetic two-proton knockout reactions

et al. 2007

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“…After this introduction we will briefly present the extension of the approach described in [15] to include the effects of final state interaction between the two ejected nucleons. The discussion of results is presented in section 3 and the final section 4 contains some concluding remarks.…”

Section: Introductionmentioning

confidence: 99%

Final state interaction in exclusive(e,e′NN)reactions

Knödler

Müther

2001

Phys. Rev. C

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Contributions of nucleon-nucleon (NN) correlations, meson exchange currents and the residual final state interactions (FSI) on exclusive two-nucleon knock-out reactions induced by electron scattering are investigated. All contributions are derived from the same realistic meson exchange model for the NN interaction. Effects of correlations and FSI are determined in a consistent way by solving the NN scattering equation, the Bethe-Goldstone equation, for two nucleons in nuclear matter. One finds that the FSI re-scattering terms are non-negligible even if the two nucleons are emitted back to back.

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“…This approximation has been adopted in the past by noting that the pair of protons will leave the nucleus largely back to back, making this type of final-state interaction less important. However, recent perturbative calculations on the ͑e , eЈpp͒ process [29][30][31] show that this effect can produce a significant increase of the experimental yield. Work is in progress to include these contributions completely [32].…”

Section: Introductionmentioning

confidence: 99%

“…The mutual interaction between the two outgoing nucleons has been studied in Ref. [29] in nuclear matter and, more recently, in two-nucleon knockout from 16 O in Refs. [30,31] within a perturbative treatment.…”

Section: Introductionmentioning

confidence: 99%

Effects of nuclear correlations on theO16(e,e′pN)reactions t

et al. 2004

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Calculations of the 16 O͑e , eЈp N͒ cross sections to the ground state and first excited levels of the 14 C and 14 N nuclei are presented. The effects of nuclear fragmentation have been obtained in a self-consistent approach and are accounted for in the determination of the two-nucleon removal amplitudes. The Hilbert space is partitioned in order to compute the contribution of both long-and short-range effects in a separate way. Both the twoproton and the proton-neutron emission cross sections have been computed within the same model for the nuclear structure as well as the same treatment of the reaction mechanism, with the aim of better comparing the differences between the two physical processes. The 16 O͑e , eЈ pp͒ reaction is found to be sensitive to shortrange correlations, in agreement with previous results. The 16 O͑e , eЈ pn͒ cross section to 1 + final states is dominated by the ⌬ current and tensor correlations. For both reactions, the interplay between collective (long-range) effects and short-range and tensor correlations plays an important role. This suggests that the selectivity of ͑e , eЈpN͒ reactions to the final state can be used to probe correlations also beyond short-range effects.

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Nucleon-nucleon correlations and two-nucleon currents in exclusive(e,e′NN)reactions

Cited by 7 publications

References 25 publications

Center-of-mass effects in electromagnetic two-proton knockout reactions

Center-of-mass effects in electromagnetic two-proton knockout reactions

Final state interaction in exclusive(e,e′NN)reactions

Effects of nuclear correlations on theO16(e,e′pN)reactions t

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