Summary
The angular dependence of polarization in p-p elastic scattering has been measured at 970 MeV. The results agree qualitatively with measurements at 635 MeV and 1.7 GeV and indicate that a Gammel-Thaler type spin-orbit potential is unsatisfactory at these energies. A least squares fit to the data gave
, where σ(θ) andE(θ) are the unpolarized differential cross section and the measured asymmetry as functions of θ(c.m.) respectively. The maximum observed polarization in p-p scattering is close to 40% at an angle of 48° (c.m.).
Riassunto
Si è mis urata a 970 MeV la dipendenza angolare della polarizzazione nello scattering elastico p-p. I risultati si accordano qualitativamente con le misure a 635 MeV e 1.7 GeV ed indicano che a queste energie un potenziale spin-orbita del tipo di Gammel-Thaler non è soddisfacente. Un adattamento col metodo dei minimi quadrati diede
, in cui σ(θ) edE(θ) sono rispettivamente la sezione d’urto differenziale non polarizzata e l’asimmetria misurate in funzione di θ (s.c.m.). La massima polarizzazione osservata nello scattering p-p è prossima al 40% ad un angolo di 48° (s.c.m.).
Similar content being viewed by others
References
L. Wolfenstein:Ann. Rev. Nucl. Sci.,6, 43 (1956).
J. L. Gammel andR. M. Thaler:Phys. Rev.,107, 291 (1957);107, 1337 (1957).
D. W. L. Sprung andJ. B. Willis:Proc. Phys. Soc.,76, 539 (1960).
H. P. Stapp, T. Ypsilantis andN. Metropolis:Phys. Rev.,105, 302 (1957).
L. Wolfestein andJ. Ashkin:Phys. Rev.,85, 947 (1952);R. Oehme:Phys. Rev.,98, 147, 216 (1955).
G. Breit andJ. B. Ehrman:Phys. Rev.,96, 805 (1954);H. P. Stapp:Californian Report, U.C.R.L. 3098 (unpublished);M. H. Hull Jr. andA. M. Saperstain:Phys. Rev.,96, 806 (1954).
L. Puzikov, R. Ryndin andJ. Smorodinsky:Nucl. Phys.,3, 436 (1957);B. M. Golovin, V. P. Dzhelepov, V. S. Nadezhdin andV. I. Satarov:Soviet Physics, J.E.T.P.,9, 302 (1959);R. J. N. Phillips: A.E.R.E.-R3141 (Harwell, 1960).
B. W. Riesenfeld andK. M. Watson:Phys. Rev.,102, 1157 (1956);K. M. Watson:Rev. Mod. Phys.,30, 565 (1958);A. H. Cromer:Phys. Rev.,113, 1607 (1959).
J. D. Dowell, W. R. Friskin, G. Martelli, B. Musgrave, H. B. van der Raay andR. Rubinstein:Nuovo Cimento,18, 818 (1960).
R. J. Homer, G. W. Hutchinson, W. K. McFarlane, A. W. O’Dell, R. Rubinstein andE. J. Sacharidis:Nuovo Cimento,16, 1132 (1960).
G. W. Hutchinson, R. Rubinstein andW. Wells:Nucl. Instr.,7, 167 (1960).
M. Huq andG. W. Hutchinson:Nucl. Instr.,4, 30 (1959).
M. G. Mescheriakov, S. B. Nurushev andG. D. Stoletov:Soviet Physics, J.E.T.P.,6, 28 (1958).
L. van Rossum:Proc. Rochester Conference (1960), p. 144.
Author information
Authors and Affiliations
Additional information
The efforts of the Synchrotron and Hydrogen Liquefier staffs are sincerely appreciated.
Rights and permissions
About this article
Cite this article
Homer, R.J., McFarlane, W.K., O’Dell, A.W. et al. Angular dependence of polarization in p-p elastic scattering at 970 MeV. Nuovo Cim 23, 690–696 (1962). https://doi.org/10.1007/BF02732736
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02732736