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} cm^{3}. 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} cm^{3}. By taking this value into account the obtained experimental data correspond to the following values of the proton polarizabilities: _{E} = (9 ± 2) · 10^{-43} cm^{3}, _{M} = (2 ± 2) · 10^{-43} cm^{3}. A mean square fluctuation of the proton electric dipole length (overliner^{2})^{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 F. E. Low, Phys. Rev. 96 (1954) 1428;
A. Klein, Phys. Rev. 99 (1955) 998;
R. Capps, Phys. Rev. 106 (1957) 1031;
E. C. Park, Jour. Sci. Instr. 33 (1956) 257;
W. Barber, W. George, and D. Reagen, Phys. Rev. 98 (1955) 73;
L. Euges, Phys. Rev. 81 (1951) 982;
P. V. C. Hough, Phys. Rev. 74 (1948) 80;
R. C. Miller, Phys. Rev. 95 (1954) 796;
C. Oxley and V. L. Telegdi, Phys. Rev. 100 (1955) 435;
C. Oxley, Phys. Rev. 110 (1958) 733;
G. Pugh et al., Phys. Rev. 105 (1957) 982;
M. Cini and R. Stroffolini, Nucl. Phys. 5 (1958) 684;
Y. A. Aleksandrov and I. I. Bondarenko, Zh. Eksp. Teor. Fiz. 31 (1956) 726;
V. S. Barashenkov, I. P. Stakhanov, and Y. A. Aleksandrov, Zh. Eksp. Teor. Fiz. 32 (1957) 1546;
Y. A. Aleksandrov, Zh. Eksp. Teor. Fiz. 32 (1957) 561;
Y. A. Aleksandrov, Zh. Eksp. Teor. Fiz. 33 (1957) 294;
V. S. Barashenkov and B. M. Barbashov, Nucl. Phys. 9 (1958) 426;
D. I. Blokhintsev, V. S. Barashenkov, and B. M. Barbashov, Usp. Fiz. Nauk 68 (1959) 417;
R. M. Thaler, Phys. Rev. 114 (1959) 827;
G. Breit and M. L. Rustgi, Phys. Rev. 114 (1959) 830;
L. L. Foldy, Phys. Rev. Lett. 3 (1959) 105;
H. W. Koch, J. W. Motz, Rev. of Mod. Phys. 31 (1959) 920;
S. Wahlborn, Phys. Rev. 138B (1965) 530;
F. Curtis Michel, Phys. Rev. 133B (1964) 329;
J. L. Powell, Phys. Rev. 75 (1949) 32;
M. Gell-Mann and M. Goldberger, Phys. Rev. 96 (1954) 1433;

Reactions

p p

<75 MeV (E_{lab})

cs, angp

Particles studied

p

mom

Record comments
First measurement of electrical polarizability of the proton.