Chronology of Milestone Events in Particle Physics - GOLDANSKY 1960
Chronology of Milestone Events in Particle Physics

GOLDANSKY 1960

Goldansky, V.I.; Karpukhin, O.A.; Kutsenko, A.V.; Pavlovskaya, V.V.;
The Elastic p Scattering at Energies of 40-70 MeV and the Polarizability of the Proton
Zh. Eksp. Teor. Fiz. 38 (1960) 1693;

Abstracts
The elastic p scattering at 40 to 70 MeV energy is investigated and differential cross-sections at 45, 75, 90, 120, 135 and 150 are determined. The results obtained are compared with the theory which takes into account the anomalous proton magnetic moment as well as the effects of mesonic cloud polarization. The cross-section of the p scattering at 90 corresponds to a proton electric polarizability E = (11 4) 10-43 cm3. As an addition to the experimental results the dispersion relations are used, which allow one to obtain from the PION - photoproduction data the value of the sum of electric (E) and magnetic (M) polarizabilities of proton: E + M = 11 10-43 cm3. By taking this value into account the obtained experimental data correspond to the following values of the proton polarizabilities: E = (9 2) 10-43 cm3, M = (2 2) 10-43 cm3. A mean square fluctuation of the proton electric dipole length (overliner2)1/2 = (3.5 div 5) 10-14 cm corresponds to the electric polarizability value obtained.

Accelerator LEBD-FIAN Detectors PHOTON

Related references
More (earlier) information appears in
R. G. Vasilkov, B. B. Govorkov and V. I. Goldansky, Zh. Eksp. Teor. Fiz. 37 (1959) 11;
R. G. Vasilkov, B. B. Govorkov and V. I. Goldansky, Nucl. Phys. 12 (1959) 337;
See also
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Reactions
  p p <75 MeV (Elab) cs, angp

Particles studied
  p mom

Record comments
First measurement of electrical polarizability of the proton.
    
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