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Electromagnetic form-factors of the proton at squared four momentum transfers between 10-fm-2 and 50 fm-2

Berger, C ; Burkert, V. ; Knop, G. ; et al.

Phys.Lett.B 35 (1971) 87-89, 1971.

Inspire Record 69362 DOI 10.17182/hepdata.28478

Electron-proton elastic scattering cross sections have been measured to determine the proton electromagnetic form factors at squared four-momentum transfers q 2 between 10 and 50 fm −2 . At these values of q 2 we measured angular distributions between 25° and 110° and in addition at 25° and 35° cross sections for q 2 from 2 to 20 fm −2 using the external electron beam of the Bonn 2.5 GeV electron synchrotron. Our results confirm deviations from the scaling law.

15 data tables

Table 1

Axis error includes +- 2/2 contribution (NORMALIZATION ERROR).

Table 2

Axis error includes +- 2/2 contribution (NORMALIZATION ERROR).

Table 3

Axis error includes +- 2/2 contribution (NORMALIZATION ERROR).

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Measurements of the Deuteron and Proton Magnetic Form-factors at Large Momentum Transfers

Bosted, Peter E. ; Katramatou, A.T. ; Arnold, R.G. ; et al.

Phys.Rev.C 42 (1990) 38-64, 1990.

Inspire Record 283632 DOI 10.17182/hepdata.26165

Measurements of the deuteron elastic magnetic structure function B(Q2) are reported at squared four-momentum transfer values 1.20≤Q2≤2.77 (GeV/c)2. Also reported are values for the proton magnetic form factor GMp(Q2) at 11 Q2 values between 0.49 and 1.75 (GeV/c)2. The data were obtained using an electron beam of 0.5 to 1.3 GeV. Electrons backscattered near 180° were detected in coincidence with deuterons or protons recoiling near 0° in a large solid-angle double-arm spectrometer system. The data for B(Q2) are found to decrease rapidly from Q2=1.2 to 2 (GeV/c)2, and then rise to a secondary maximum around Q2=2.5 (GeV/c)2. Reasonable agreement is found with several different models, including those in the relativistic impulse approximation, nonrelativistic calculations that include meson-exchange currents, isobar configurations, and six-quark configurations, and one calculation based on the Skyrme model. All calculations are very sensitive to the choice of deuteron wave function and nucleon form factor parametrization. The data for GMp(Q2) are in good agreement with the empirical dipole fit.

2 data tables

Table 1

The measured cross section have been devided by those obtained using the dipole form for the proton form factors: G_E=1/(1+Q2/0.71)**2, G_E(Q2)=G_M(Q2)/mu,where Q2 in GeV2, mu=2.79.

Table 2

Axis error includes +- 0.0/0.0 contribution (?////Errors given are the statistical errors and systematic uncertainties add ed in quadreture).

Backward electron-deuteron scattering below 280 mev

Ganichot, D. ; Grossetete, B. ; Isabelle, D.B. ;

Nucl.Phys.A 178 (1972) 545-562, 1972.

Inspire Record 75366 DOI 10.17182/hepdata.8775

We measured the elastic and inelastic scattering of electrons on deuterium at 180° for four incident energies (70, 140, 210 and 280 MeV). The data were analysed with a technique allowing an accurate comparison between experiment and theory. We observed a good agreement for the inelastic data with the expected cross section, using the presently available models and nucleon form factors. The experimental elastic cross section is systematically larger than the predicted cross sections.

16 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Small-Angle Electron-Proton Elastic Scattering Cross Sections for Momentum Transfers between 10 and 105 f $^{-2}$

Bartel, W. ; Dudelzak, B. ; Krehbiel, H. ; et al.

Phys.Rev.Lett. 17 (1966) 608-611, 1966.

Inspire Record 846566 DOI 10.17182/hepdata.21827

None

8 data tables

Table 1

No description provided.

Table 2

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Table 3

No description provided.

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Elastic Electron-Deuteron Scattering

Grossetete, B. ; Drickey, D. ; Lehmann, P. ;

Phys.Rev. 141 (1966) 1425-1434, 1966.

Inspire Record 944959 DOI 10.17182/hepdata.26656

We present results on elastic electron-deuteron experiments performed at Orsay. The range of momentum transfers is 0.6 to 2 F−2. Two kinds of measurements have been taken detecting the scattered electron: one with a solid CD2 target, the other with a liquid target. The data are analyzed with the nonrelativistic theory, which gives slightly positive neutron form factors and a magnetic neutron form factor nearly equal to the magnetic proton form factor.

3 data tables

Table 1

No description provided.

Table 2

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Table 3

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Electrodisintegration of the Deuteron Around q2=3.5 F-2

Grossetete, B. ; Jullian, S. ; Lehmann, P. ;

Phys.Rev. 141 (1966) 1435-1440, 1966.

Inspire Record 944958 DOI 10.17182/hepdata.462

We have measured the absolute cross sections of the electron-deuteron scattering at q2=3.5 F−2 and obtained the complete inelastic spectrum. Three points for each spectrum are given with a 4% accuracy. The scattering angles, 60° and 130°, were chosen to allow the separation between electric and magnetic scattering. Calculations of radiative corrections were made in order to permit the comparison of the spectra with the inelastic-scattering theories.

20 data tables

Table 1

No description provided.

Table 2

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Table 3

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