Polarization of Vector Mesons Produced in Nucleon-Nucleon Collisions

Lee C. Teng

doi:10.1103/PhysRev.84.308

Access by Xinjiang University

Polarization of Vector Mesons Produced in Nucleon-Nucleon Collisions

Lee C. Teng

Department of Physics, University of Chicago, Chicago, Illinois

PDF

Phys. Rev. 84, 308 – Published 15 October, 1951

DOI: https://doi.org/10.1103/PhysRev.84.308

Abstract

The polarization of vector mesons produced in free nucleon-nucleon collisions near the threshold is studied. The calculation is made under the Born approximation, assuming a phenomenological nuclear potential obtained from $n - p$ scattering data for the interaction between nucleons. The vector meson produced is shown to be completely polarized (to the order of $\frac{m}{M}$ ) parallel to the direction of motion of the incoming nucleon for vector coupling between meson and nucleon, and perpendicular to this direction for tensor coupling; similar to the polarization produced by the interaction between a nucleon and a nuclear force field, as studied by Wentzel. In particular, the same effect is shown to exist for the reactions $p + p \to p + n + π^{+}$ and $n + n \to p + n + π^{-}$ when the final proton and neutron fall into ${}^{3}s$ or ${}^{1}s$ deuteron states. The angular distribution of the out-going nucleons in the baricentric system for the inverse reactions can be employed as a means for detecting the polarization of the mesons. Cross sections for these reactions are also estimated.

References (21)

Steinberger, Panofsky, and Steller, Phys. Rev. 78, 802 (1950)
G. Wentzel, Phys. Rev. 75, 1810 (1949)
Hadley, Kelly, Leith, Segrè, Wiegand, and York, Phys. Rev. 75, 351 (1949)
R. S. Christian and E. W. Hart, Phys. Rev. 77, 441 (1950)
Kelly, Leith, Segrè, and Wiegand, Phys. Rev. 79, 96 (1950)
N. Kemmer, Proc. Cambridge Phil. Soc. 34, 354 (1938)
L. Leprince-Ringuet and M. Lheritier, J. phys. et radium (Sér. 8) 7, 66 (1946)
G. D. Rochester and C. C. Butler, Nature 160, 855 (1947)
Seriff, Leighton, Hsiao, Cowan, and Anderson, Phys. Rev. 78, 290 (1950)
P. M. S. Blackett, V-Particles and Cosmic Rays, paper presented at the International Conference on Elementary Particles (Bombay, December, 1950)
Peterson, Iloff, and Sherman, Phys. Rev. 81, 647 (1951)
Cartwright, Richman, Whitehead, and Wilcox, Phys. Rev. 81, 652 (1951)
Crawford, Crowe, and Stevenson, Phys. Rev. 82, 97 (1951)
N. Kemmer, Proc. Roy. Soc. (London) A166, 127 (1938)
G. Wentzel, Helv. Phys. Acta 22, 101 (1949)
Omitted endnote
R. E. Marshak and L. L. Foldy, Phys. Rev. 75, 1493 (1949)
L. Rosenfeld, Nuclear Forces (Interscience Publishers, Inc., New York, 1949), p. 67
C. Marty and J. Prentki, J. phys. et radium (Sér. 8) 10, 156 (1949)
W. B. Cheston, On the Reactions $π^{+}$ + d ⇆ p + p (unpublished paper, Rochester, New York)
L. I. Schiff, Quantum Mechanics (McGraw-Hill Book Company, Inc., New York, 1949), p. 168

[c1] Steinberger, Panofsky, and Steller, Phys. Rev. 78, 802 (1950)

[c2] G. Wentzel, Phys. Rev. 75, 1810 (1949)

[c3] Hadley, Kelly, Leith, Segrè, Wiegand, and York, Phys. Rev. 75, 351 (1949)

[c4] R. S. Christian and E. W. Hart, Phys. Rev. 77, 441 (1950)

[c5] Kelly, Leith, Segrè, and Wiegand, Phys. Rev. 79, 96 (1950)

[c6] N. Kemmer, Proc. Cambridge Phil. Soc. 34, 354 (1938)

[c7] L. Leprince-Ringuet and M. Lheritier, J. phys. et radium (Sér. 8) 7, 66 (1946)

[c8] G. D. Rochester and C. C. Butler, Nature 160, 855 (1947)

[c9] Seriff, Leighton, Hsiao, Cowan, and Anderson, Phys. Rev. 78, 290 (1950)

[c10] P. M. S. Blackett, V-Particles and Cosmic Rays, paper presented at the International Conference on Elementary Particles (Bombay, December, 1950)

[c11] Peterson, Iloff, and Sherman, Phys. Rev. 81, 647 (1951)

[c12] Cartwright, Richman, Whitehead, and Wilcox, Phys. Rev. 81, 652 (1951)

[c13] Crawford, Crowe, and Stevenson, Phys. Rev. 82, 97 (1951)

[c14] N. Kemmer, Proc. Roy. Soc. (London) A166, 127 (1938)

[c15] G. Wentzel, Helv. Phys. Acta 22, 101 (1949)

[c16] Omitted endnote

[c17] R. E. Marshak and L. L. Foldy, Phys. Rev. 75, 1493 (1949)

[c18] L. Rosenfeld, Nuclear Forces (Interscience Publishers, Inc., New York, 1949), p. 67

[c19] C. Marty and J. Prentki, J. phys. et radium (Sér. 8) 10, 156 (1949)

[c20] W. B. Cheston, On the Reactions $π^{+}$ + d ⇆ p + p (unpublished paper, Rochester, New York)

[c21] L. I. Schiff, Quantum Mechanics (McGraw-Hill Book Company, Inc., New York, 1949), p. 168

Physical Review Journals Archive

Export citation

Export citation

Polarization of Vector Mesons Produced in Nucleon-Nucleon Collisions

Abstract

References (21)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation