Theoretical investigations on elastic electron-deuteron scattering (original) (raw)
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Physical Review Letters, 1998
The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in coincidence using the Hall A Facility of Jefferson Laboratory. The data are compared to theoretical models based on the impulse approximation with inclusion of meson-exchange currents, and to predictions of quark dimensional scaling and perturbative quantum chromodynamics
Precise Measurement of the Deuteron Elastic Structure Function A\(Q2
Physical Review Letters, 1999
The A(Q^2) structure function in elastic electron-deuteron scattering was measured at six momentum transfers Q^2 between 0.66 and 1.80 (GeV/c)^2 in Hall C at Jefferson Laboratory. The scattered electrons and recoil deuterons were detected in coincidence, at a fixed deuteron angle of 60.5 degrees. These new precise measurements resolve discrepancies between older sets of data. They put significant constraints on existing models of the deuteron electromagnetic structure, and on the strength of isoscalar meson exchange currents.
Elastic electron-deuteron scattering beyond one-photon exchange
Physical Review C, 2010
We discuss elastic ed scattering beyond the Born approximation. The reaction amplitude contains six generalized form factors, but only three linearly independent combinations of them (generalized charge, quadrupole and magnetic form factors) contribute to the reaction cross section in second order perturbation theory. We examine the two-photon exchange and find that it includes two types of diagrams, where two virtual photons are interacting with the same nucleon and where the photons are interacting with different nucleons. It is shown that the two-photon exchange amplitude is strongly connected with the deuteron wave function at short distances. PACS numbers: 13.40.Gp,21.45.Bc,25.30.Bf
Physical Review Letters, 1999
The deuteron elastic structure function A(Q 2 ) has been extracted in the range 0.7 ≤ Q 2 ≤ 6.0 (GeV/c) 2 from cross section measurements of elastic electron-deuteron scattering in coincidence using the Hall A Facility of Jefferson Laboratory. The data are compared to theoretical models based on the impulse approximation with the inclusion of meson-exchange currents, and to predictions of quark dimensional scaling and perturbative quantum chromodynamics.
Measurements of the Deuteron Elastic Structure Function A(Q²) for 0.7
Physical Review Letters, 1999
The deuteron elastic structure function A(Q 2 ) has been extracted in the range 0.7 ≤ Q 2 ≤ 6.0 (GeV/c) 2 from cross section measurements of elastic electron-deuteron scattering in coincidence using the Hall A Facility of Jefferson Laboratory. The data are compared to theoretical models based on the impulse approximation with the inclusion of meson-exchange currents, and to predictions of quark dimensional scaling and perturbative quantum chromodynamics.
Physical Review C, 1994
The tensor polarization of the recoil deuteron in elastic electron-deuteron scattering has been measured at the Bates Linear Accelerator Center at three values of four-momentum transfer, Q = 3.78, 4.22, and 4.62 fm-', corresponding to incident electron energies of 653, 755, and 853 MeV. The scattered electrons and the recoil deuterons were detected in coincidence. The recoil deuterons were transported to a liquid hydrogen target to undergo a second scattering. The angular distribution of the d-p scattering was measured using a polarimeter. The polarimeter was calibrated in an auxiliary experiment using a polarized deuteron beam at the Laboratoire National Saturne. A Monte Carlo procedure was used to generate interpolated calibration data because the energy spread in the deuteron energies in the Bates experiment spanned the range of deuteron energies in the calibration experiment. The extracted values of tzo are compared to predictions of different theoretical models of the electromagnetic form factors of the deuteron: nonrelativistic and relativistic nucleon-meson dynamics, Skyrme model, quark models, and perturbative quantum chromodynamics. Along with the world data on the structure functions A ( Q ) and B(Q), they are used to separate the charge monopole and charge quadrupole form factors of the deuteron. A node in the charge monopole form factor is observed at Q = 4.39 i 0.16 fm-' .
2019
The influence of local and nonlocal nucleon-nucleon (NN) potential models on the unpolarized structure functions A(Q2) and B(Q2) and the deuteron electromagnetic form factors in the elastic electron-deuteron (e-d) scattering process is investigated. As local NN potentials, the realistic Argonne v18 and chiral NNNLO potentials are used. For the nonlocal ones, the modern CD-Bonn and Nijmegen-I potentials are considered. Various parameterizations of the free nucleon form factors are used in to study the sensitivity of the predicted results to the nucleon structure. We found that the structure functions A(Q2) and B(Q2) as well as the charge GC(Q2), quadruple GQ(Q2), and magnetic GM(Q2) deuteron form factors are slightly dependent on the NN potential model used for the deuteron wave function. On the contrary, the results of structure functions and form factors are found to be strongly dependent on the models used for the free nucleon form factors.
Moscow University Physics Bulletin, 2019
Influence of nucleon structure on single tensor-deuteron and double beam-vector-deuteron analyzing powers in the elastic electron-deuteron scattering process is investigated. We report numerical results for the tensor-deuteron (T 20 , T 21 , and T 22), and beam-vector-deuteron (T 10 and T 11) analyzing powers as functions of the four-momentum transfer square Q 2 and the electron scattering angle in the laboratory frame θ e. This is made possible with the advent of recent polarization measurements with polarized electron beams and/or polarized deuteron targets at MIT-Bates, JLab, NIKHEF, VEPP-2, and VEPP-3. We found that the predicted results for T 21 , T 22 , T 10 , and T 11 are sensitive to the nucleon electromagnetic form factors. On the contrary, the T 20 analyzing power is found to be almost independent on the actual nucleon form factors. The predicted analyzing powers are compared with the available experimental data and a satisfactory agreement is obtained.
Precise Measurement of the Deuteron Elastic Structure Function As s sQ2d d d
The A͑Q 2 ͒ structure function in elastic electron-deuteron scattering was measured at six momentum transfers Q 2 between 0.66 and 1.80 ͑GeV͞c͒ 2 in Hall C at Jefferson Laboratory. The scattered electrons and recoil deuterons were detected in coincidence, at a fixed deuteron angle of 60.5 ± . These new precise measurements resolve discrepancies between older sets of data. They put significant constraints on existing models of the deuteron electromagnetic structure, and on the strength of isoscalar meson exchange currents. [S0031-9007(99)08479-3] PACS numbers: 25.30. Bf, 13.40.Gp, 21.45. + v, 27.10. + h The deuteron is the only two nucleon bound state and, as such, is one of the most fundamental systems in nuclear physics. Measurements of its electromagnetic properties have been invaluable to our understanding of the nucleon-nucleon interaction and the role of meson and isobar degrees of freedom in nuclear systems. At intermediate to high momentum transfer, it remains a challenge to explore the limitations of the mesonucleonic picture of nuclei and unravel the possible role of the quark substructure of nucleons in nuclear structure. The deuteron electromagnetic form factors as measured in elastic e-d scattering provide a crucial test for any model of the deuteron. In this paper, new measurements of the deuteron elastic structure function A͑Q 2 ͒ are presented in an intermediate momentum transfer region, where previous experiments [1-4] differ by as much as 40% from each other and where theoretical models have been recently refined.