Amplitude Structure in Predominantly Pomeranchukon-Exchange Reactions and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>s</mi></math></span>-Channel Helicity Nonconservation

G. Chadwick; Y. Eisenberg; E. Kogan

doi:10.1103/PhysRevD.8.1607

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Amplitude Structure in Predominantly Pomeranchukon-Exchange Reactions and $s$ -Channel Helicity Nonconservation

G. Chadwick, Y. Eisenberg^*, and E. Kogan^*

Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

^*Present address: Weizmann Institute, Rehovoth, Israel.

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Phys. Rev. D 8, 1607 – Published 1 September, 1973

DOI: https://doi.org/10.1103/PhysRevD.8.1607

Abstract

The unit-helicity-flip and nonflip amplitudes of $γ p \to ρ^{0} p$ and $π N \to π N$ for $I = 0$ exchange are shown to be similar in magnitude when scaled by the vector-dominance-model constant. We separate the $ρ^{0}$ amplitudes for Pomeranchukon and $f$ exchange using the dual absorption model. Possible sources of the helicity-flip term are discussed.

References (20)

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F. J. Gilman et al., Phys. Lett. 31B, 387 (1970)
F. Halzen and C. Michael, Phys. Lett. 36B, 367 (1971) P. Johnson et al., Phys. Rev. Lett. 30, 242 (1973)
J. Ballam et al., Phys. Rev. D 7, 3150 (1973)
H. Harari, Ann. Phys. (N.Y.) 63, 432 (1971) M. Davier, and H. Harari, Phys. Lett. 35B, 239 (1971) H. Harari and A. Schwimmer, Phys. Rev. D 5, 2780 (1972)
M. Davier, Phys. Lett. 40B, 369 (1972)
R. L. Anderson et al., Phys. Rev. Lett. 30, 149 (1973)
V. Barger, K. Geer, and F. Halzen, Nucl. Phys. B49, 302 (1972)
W. P. Hesse, thesis, University of California, Santa Barbara, 1971 (unpublished) G. Wolf, in Proceedings of the 1971 International Symposium on Electron and Photon Interactions at High Energies, edited by N. B. Mistry (Laboratory of Nuclear Studies, Cornell University, Ithaca, N. Y., 1972), p. 189
([5])
[2,5]
A. de Lesquen et al., Phys. Lett. 40B, 277 (1972) G. Cozzika et al., ibid. 40B, 281 (1972)
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G. Chadwick et al., in Experimental Meson Spectroscopy—1972, proceedings of the Third International Conference, Philadelphia, 1972, edited by Kwan-Wu Lai and Arthur H. Rosenfeld (A.I.P., New York, 1972), p. 340 SLAC Report No. SLAC-PUB-1093, 1972 (unpublished) G. Höhler et al., Karlsruhe Report No. TKP 11/72, 1972 (unpublished)
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J. A. J. Matthews, SLAC Report No. SLAC-PUB-1123, 1972 (unpublished)

[c1] Cambridge Bubble Chamber Group, Phys. Rev. 146, 994 (1966) Aachen-Berlin-Bonn-Hamburg-Heidelberg-München Collaboration, ibid. 175, 1669 (1968) H. Alvensleben et al., Phys. Rev. Lett. 23, 1058 (1969) Y. Eisenberg et al., Phys. Rev. D 5, 15 (1972)

[c2] J. Ballam et al., Phys. Rev. Lett. 24, 960 (1970) Phys. Rev. D 5, 545 (1972)

[c3] F. J. Gilman et al., Phys. Lett. 31B, 387 (1970)

[c4] F. Halzen and C. Michael, Phys. Lett. 36B, 367 (1971) P. Johnson et al., Phys. Rev. Lett. 30, 242 (1973)

[c5] J. Ballam et al., Phys. Rev. D 7, 3150 (1973)

[c6] H. Harari, Ann. Phys. (N.Y.) 63, 432 (1971) M. Davier, and H. Harari, Phys. Lett. 35B, 239 (1971) H. Harari and A. Schwimmer, Phys. Rev. D 5, 2780 (1972)

[c7] M. Davier, Phys. Lett. 40B, 369 (1972)

[c8] R. L. Anderson et al., Phys. Rev. Lett. 30, 149 (1973)

[c9] V. Barger, K. Geer, and F. Halzen, Nucl. Phys. B49, 302 (1972)

[c10] W. P. Hesse, thesis, University of California, Santa Barbara, 1971 (unpublished) G. Wolf, in Proceedings of the 1971 International Symposium on Electron and Photon Interactions at High Energies, edited by N. B. Mistry (Laboratory of Nuclear Studies, Cornell University, Ithaca, N. Y., 1972), p. 189

[c11] ([5])

[c12] [2,5]

[c13] A. de Lesquen et al., Phys. Lett. 40B, 277 (1972) G. Cozzika et al., ibid. 40B, 281 (1972)

[c14] V. Barger and F. Halzen, Phys. Rev. Lett. 28, 194 (1972)

[c15] G. Chadwick et al., in Experimental Meson Spectroscopy—1972, proceedings of the Third International Conference, Philadelphia, 1972, edited by Kwan-Wu Lai and Arthur H. Rosenfeld (A.I.P., New York, 1972), p. 340 SLAC Report No. SLAC-PUB-1093, 1972 (unpublished) G. Höhler et al., Karlsruhe Report No. TKP 11/72, 1972 (unpublished)

[c16] Y. Avni, SLAC Report No. SLAC-PUB-1036, 1972 (unpublished) Nuovo Cimento Lett. 4, 725 (1972)

[c17] R. L. Anderson et al., Phys. Rev. D 1, 27 (1970)

[c18] J. Lefrançois, in Proceedings of the 1971 International Symposium on Electron and Photon Interactions at High Energies, edited by N. B. Mistry, [10], p. 52

[c19] R. L. Anderson et al., Phys. Rev. Lett. 25, 1218 (1970) A. M. Boyarski et al., ibid. 26, 1600 (1971) G. Buschhorn et al., Phys. Lett. 37B, 207 (1971)

[c20] J. A. J. Matthews, SLAC Report No. SLAC-PUB-1123, 1972 (unpublished)

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Amplitude Structure in Predominantly Pomeranchukon-Exchange Reactions and $s$ -Channel Helicity Nonconservation

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Amplitude Structure in Predominantly Pomeranchukon-Exchange Reactions and s-Channel Helicity Nonconservation

Abstract

References (20)

Amplitude Structure in Predominantly Pomeranchukon-Exchange Reactions and $s$ -Channel Helicity Nonconservation