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Schaar, Maurits van der; Arenhövel, H.; Blok, H.P.; Bulten, H.; Hummel, E.; Jans, E.; Lapikás, L.; Steenhoven, G. van der; Tjon, J.A.; Wesseling, J.; Huberts, P.K.A. de Witt

doi:10.1103/physrevlett.68.776

Cited by 48 publications

(38 citation statements)

References 11 publications

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“…• -cross section in deuteron photodisintegration [1] and the LT -interference structure function in electrodisintegration of the deuteron [2]. In the meantime, a great number of theoretical investigations have been devoted to this question.…”

Section: Introductionmentioning

confidence: 99%

Consistent treatment of relativistic effects in electrodisintegration of the deuteron

et al. 1997

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The influence of relativistic contributions to deuteron electrodisintegration is systematically studied in various kinematic regions of energy and momentum transfer. As theoretical framework the equation-of-motion and the unitarily equivalent S-matrix approaches are used. In a (p/M )-expansion, all leading order relativistic π-exchange contributions consistent with the Bonn OBEPQ model are included. In addition, static heavy meson exchange currents including boost terms, γπρ/ω-currents, and ∆-isobar contributions are considered.Sizeable effects from the various relativistic two-body contributions, mainly from π-exchange, have been found in inclusive form factors and exclusive structure functions for a variety of kinematic regions.

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Section: Introductionmentioning

confidence: 99%

Consistent treatment of relativistic effects in electrodisintegration of the deuteron

et al. 1997

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“…In the unpolarized ͑e, e 0 p͒ reaction, the information on the dynamics of the two-nucleon system is contained in four structure functions: the longitudinal f L , the transverse f T , and the interference terms f LT and f TT . Measurements of the differential cross section and in some cases of the individual structure functions f L , f T , and f LT [3][4][5][6][7][8][9][10][11][12][13][14][15] have provided stringent tests of the existing theoretical models [16][17][18][19]. In particular, the f L and f T data were reproduced by the existing calculations [7,10], while the f LT data pointed to the need for a relativistic form of the current operator [8,[11][12][13][14].…”

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confidence: 99%

Deuteron Electrodisintegration in theΔ-Resonance Region

et al. 1997

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The differential cross section and the transverse-transverse interference structure function for the reaction 2 H͑e, e 0 p͒n have been determined at an np invariant mass of 2.16 GeV. The data, covering a 40 ± range in the proton emission angle, indicate that D excitation and subsequent ND interaction is the dominant reaction mechanism. Calculations performed within an ND coupled-channel approach reproduce the cross section data, but underestimate the f TT results by 30 to 40 percent.[S0031-9007(97)03090-1] PACS numbers: 25.10. + s, 13.60. Rj, 13.75.Cs, 25.30.Rw Deuteron electrodisintegration in the D-resonance region offers an excellent probe to investigate the dynamics of the D isobar in a nuclear system. While at low energy transfer the deuteron response is reproduced by microscopic calculations based on realistic NN potentials, at higher energy transfer the first nucleon resonance, the D or P 33 baryon, plays an important role. This has been illustrated in several theoretical studies [1,2].Many electron scattering experiments have been devoted to deuteron disintegration in quasifree kinematics. Of these, the exclusive ͑e, e 0 p͒ measurements have provided the most detailed information on the deuteron structure. In the unpolarized ͑e, e 0 p͒ reaction, the information on the dynamics of the two-nucleon system is contained in four structure functions: the longitudinal f L , the transverse f T , and the interference terms f LT and f TT . Measurements of the differential cross section and in some cases of the individual structure functions f L , f T , and f LT [3][4][5][6][7][8][9][10][11][12][13][14][15] have provided stringent tests of the existing theoretical models [16][17][18][19]. In particular, the f L and f T data were reproduced by the existing calculations [7,10], while the f LT data pointed to the need for a relativistic form of the current operator [8,[11][12][13][14]. The measurement of f TT is more difficult, since it requires the detection of protons outside of the electron scattering plane. Hitherto, only one measurement [6] has been reported, at very low transferred energy and momentum ͑v, jqj͒ ͑18 MeV, 160 MeV͞c͒; the f TT results were not significantly different from zero.Although the effects of D isobar currents (IC) are small in quasifree kinematics, they are expected to become important at higher excitation energies. In the Dresonance region, which corresponds to an np invariant mass W np of about 2.17 GeV, one has to treat the D isobar and the nucleon degrees of freedom in a coupledchannel (CC) approach, as was shown for NN scattering in Ref. [20], and for electromagnetic deuteron break-up first in Ref.[21] and more recently in improved calculations in Refs. [22,23]. These models predict that the 2 H͑e, e 0 p͒n reaction in the D-resonance region is almost purely transverse in character and therefore the structure functions f T and f TT essentially generate the entire cross section. These structure functions in turn are predicted to have the characteristic features of a dominant M1 multipo...

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“…However, calculations with a non-relativistic current operator fail to describe the cross section asymmetry A4 with respect to the direction of momentum transfer q. This was first shown in an experiment [6] performed at NIKHEF with Q* = 0.2 (GeV/c)* in the P,,, range 50-170 MeV/c. Calculations using a relativistic form of the current operator [7-91 gave a significantly better description of these asymmetry data.…”

Section: Introductionmentioning

confidence: 99%

Relativistic effects in the electrodisintegration of deuterium

Kasdorp¹,

Bauer²,

Hesselink³

et al. 1997

Physics Letters B

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The structure function RLT and the cross-section asymmetry A@ with respect to the direction of the momentum transfer in the reaction 'H(e, e'p) have been measured at a four-momentum transfer squared of 0.2 (GeV/c)', for missing momenta between 160 and 220 MeV/c at an invariant mass of 1050 MeV. For a proper description of these data calculations that include a relativistic form of the nucleon current operator are favoured. The absolute *H( e, e'p) cross-section data favour a covariant calculation over non-relativistic calculations with relativistic corrections.

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Longitudinal-transverse interference structure function ofH2

Cited by 48 publications

References 11 publications

Consistent treatment of relativistic effects in electrodisintegration of the deuteron

Consistent treatment of relativistic effects in electrodisintegration of the deuteron

Deuteron Electrodisintegration in theΔ-Resonance Region

Relativistic effects in the electrodisintegration of deuterium

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