Final-State Interactions in Quasifree Electron Scattering from Nuclei

Epp, Chirold Delain; Griffy, T. A.

doi:10.1103/physrevc.1.1633

Cited by 9 publications

(8 citation statements)

References 15 publications

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“…In the case of a deuteron target we found significant effects of the missing energy [29] (Fig.3). We demonstrate that even larger effects are expected for knock out of nucleons off 3 He, 4 He targets.…”

Section: Introductionmentioning

confidence: 80%

Feynman graphs and generalized eikonal approach to high energy knock-out processes

1997

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The cross section of hard semiexclusive A(e,eЈN)(AϪ1) reactions for fixed missing energy and momentum is calculated within the eikonal approximation. Relativistic dynamics and kinematics of high energy processes are unambiguously accounted for by using the analysis of appropriate Feynman diagrams. A significant dependence of the final state interactions on the missing energy is found, which is important for interpretation of forthcoming color transparency experiments. A new, more stringent kinematic restriction on the region where the contribution of short-range nucleon correlations is enhanced in semiexclusive knock-out processes is derived. It is also demonstrated that the use of light-cone variables leads to a considerable simplification of the description of high energy knock-out reactions.

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Section: Introductionmentioning

confidence: 80%

Feynman graphs and generalized eikonal approach to high energy knock-out processes

1997

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“…At energies of produced hadronic system E N ≤ 1GeV the final state interactions in semi-exclusive nuclear reactions are usually evaluated in terms of an effective potential for the interaction in the residual system -the optical model approximation, (see, for example, Ref. [16]). Two important features of high-energy FSI make the extension of the potential formalism to high energies problematic.…”

Section: Introductionmentioning

confidence: 99%

Selected Topics in High Energy Semi-Exclusive Electro-Nuclear Reactions

Sargsian

2001

Int. J. Mod. Phys. E

102

200

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We review the present status of the theory of high energy reactions with semi-exclusive nucleon electro-production from nuclear targets. We demonstrate how the increase of transferred energies in these reactions opens a complete new window in studying the microscopic nuclear structure at small distances. The simplifications in theoretical descriptions associated with the increase of the energies are discussed. The theoretical framework for calculation of high energy nuclear reactions based on the effective Feynman diagram rules is described in details. The result of this approach is the generalized eikonal approximation (GEA), which is reduced to Glauber approximation when nucleon recoil is neglected. The method of GEA is demonstrated in the calculation of high energy electro-disintegration of the deuteron and A = 3 targets. Subsequently we generalize the obtained formulae for A > 3 nuclei. The relation of GEA to the Glauber theory is analyzed. Then based on the GEA framework we discuss some of the phenomena which can be studied in exclusive reactions, these are: nuclear transparency and short-range correlations in nuclei. We illustrate how light-cone dynamics of high-energy scattering emerge naturally in high energy electro-nuclear reactions.

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“…The Hamiltonian for the interaction between an electron and A nucleons, is that of Mc Voy and van Hove [32] which has been previously employed in the electro-disintegration of the trinucleon system [33,2,3]. This effective Hamiltonian, correct to order h2 q 2 /M 2 c 2 , is…”

Section: The Cross Sectionmentioning

confidence: 99%

Model calculations for the two-fragment electro-disintegration of4He

Braun¹,

Howell²,

Sofianos³

et al. 1999

Phys. Rev. C

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Differential cross sections for the electro-disintegration process eϩ 4 He→ 3 HϩpϩeЈ are calculated, using a model in which the final-state interaction is included by means of a nucleon-nucleus (3ϩ1) potential constructed via Marchenko inversion. The required bound-state wave functions are calculated within the integrodifferential equation approach. In our model the important condition that the initial bound state and the final scattering state are orthogonal is fulfilled. The sensitivity of the cross section to the input p 3 H interaction in certain kinematical regions is investigated. The approach adopted could be useful in reactions involving few cluster systems where effective interactions are not well known and exact methods are presently unavailable. Although, our plane-wave impulse approximation results exhibit, similarly to other calculations, a dip in the fivefold differential cross section around a missing momentum of ϳ450 MeV/c, it is argued that this is an artifact of the omission of rescattering four-nucleon processes. ͓S0556-2813͑99͒02105-6͔ PACS number͑s͒: 21.45.ϩv, 25.10.ϩs, 25.30.Fj

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Final-State Interactions in Quasifree Electron Scattering from Nuclei

Cited by 9 publications

References 15 publications

Feynman graphs and generalized eikonal approach to high energy knock-out processes

Feynman graphs and generalized eikonal approach to high energy knock-out processes

Selected Topics in High Energy Semi-Exclusive Electro-Nuclear Reactions

Model calculations for the two-fragment electro-disintegration of4He

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