Positive-Pion Photoproduction in the Backward Direction

K. Ekstrand; A. Browman; L. Hand; M. E. Nordberg, Jr

doi:10.1103/PhysRevD.6.1

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Positive-Pion Photoproduction in the Backward Direction

K. Ekstrand^*, A. Browman, L. Hand, and M. E. Nordberg, Jr.

Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14850

^*Present address: Laboratori Nazionali di Frascati, Italy.

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Phys. Rev. D 6, 1 – Published 1 July, 1972

DOI: https://doi.org/10.1103/PhysRevD.6.1

Abstract

The reaction $γ + p \to π^{+} + n$ has been measured for incident $γ$ -ray energies from 0.7 to 8 GeV and recoil lab angles from 170° to 180° using the Cornell 10-GeV synchrotron. The data presented here cover the transition region between the resonance region and the high-energy region studied at SLAC. The results are compared with various phenomenological Regge-pole analyses and with similar data on $π^{0}$ photoproduction taken at DESY.

References (20)

R. L. Walker, Phys. Rev. 182, 1729 (1969)
G. Fischer et al., paper submitted to the Fifteenth International Conference on High-Energy Physics, Kiev, U.S.S.R., 1970 (unpublished)
T. Fujii et al., paper submitted to the Fifteenth International Conference on High-Energy Physics, Kiev, U.S.S.R., 1970 (unpublished)
B. D'Almague, thesis, l'Université de Paris, Centre d'Orsay, 1970 (unpublished)
R. L. Anderson et al., Phys. Rev. Letters 23, 725 (1969) ibid.21, 479 (1968)
G. Buschorn et al., Phys. Rev. Letters 20, 230 (1968)
M. Jacob and G. C. Wick, Ann. Phys. (N.Y.) 7, 404 (1959)
J. V. Beaupre and E. A. Paschos, Phys. Rev. D 1, 2040 (1970)
K. Ekstrand, Ph.D. thesis, Cornell University, 1971 (unpublished)
H. W. Koch and J. W. Motz, Rev. Mod. Phys. 31, 920 (1959)
G. Lutz and H. D. Schulz, DESY Report No. 67/29, 1967 (unpublished)
Omitted endnote
R. Alvarez et al., Phys. Rev. D 1, 1946 (1970)
N. I. Petrov et al., Zh. Eksp. Teor. Fiz. 37, 957 (1959) [Sov. Phys. JETP 10, 682 (1960)] V. G. Ivonov et al., Zh. Eksp. Teor. Fiz. 37, 863 (1959) [Sov. Phys. JETP 10, 615 (1960)] V. T. Osipenkov and S. S. Filipov, Zh. Eksp. Teor. Fiz. 34, 224 (1958) [Sov. Phys. JETP 7, 154 (1958)]
R. Loe (private communication)
V. Barger and P. Weiler, Phys. Letters 30B, 105 (1969)
R. D. Bajpaj, Lett. Nuovo Cimento 4, 950 (1970)
R. L. Kelly, G. L. Kane, and F. Henyey, Phys. Rev. Letters 24, 1511 (1970)
R. Dolen, D. Horn, and C. Schmid, Phys. Rev. 166, 1768 (1968)
R. Anthony et al., Phys. Rev. Letters 21, 1605 (1968)

[c1] R. L. Walker, Phys. Rev. 182, 1729 (1969)

[c2] G. Fischer et al., paper submitted to the Fifteenth International Conference on High-Energy Physics, Kiev, U.S.S.R., 1970 (unpublished)

[c3] T. Fujii et al., paper submitted to the Fifteenth International Conference on High-Energy Physics, Kiev, U.S.S.R., 1970 (unpublished)

[c4] B. D'Almague, thesis, l'Université de Paris, Centre d'Orsay, 1970 (unpublished)

[c5] R. L. Anderson et al., Phys. Rev. Letters 23, 725 (1969) ibid.21, 479 (1968)

[c6] G. Buschorn et al., Phys. Rev. Letters 20, 230 (1968)

[c7] M. Jacob and G. C. Wick, Ann. Phys. (N.Y.) 7, 404 (1959)

[c8] J. V. Beaupre and E. A. Paschos, Phys. Rev. D 1, 2040 (1970)

[c9] K. Ekstrand, Ph.D. thesis, Cornell University, 1971 (unpublished)

[c10] H. W. Koch and J. W. Motz, Rev. Mod. Phys. 31, 920 (1959)

[c11] G. Lutz and H. D. Schulz, DESY Report No. 67/29, 1967 (unpublished)

[c12] Omitted endnote

[c13] R. Alvarez et al., Phys. Rev. D 1, 1946 (1970)

[c14] N. I. Petrov et al., Zh. Eksp. Teor. Fiz. 37, 957 (1959) [Sov. Phys. JETP 10, 682 (1960)] V. G. Ivonov et al., Zh. Eksp. Teor. Fiz. 37, 863 (1959) [Sov. Phys. JETP 10, 615 (1960)] V. T. Osipenkov and S. S. Filipov, Zh. Eksp. Teor. Fiz. 34, 224 (1958) [Sov. Phys. JETP 7, 154 (1958)]

[c15] R. Loe (private communication)

[c16] V. Barger and P. Weiler, Phys. Letters 30B, 105 (1969)

[c17] R. D. Bajpaj, Lett. Nuovo Cimento 4, 950 (1970)

[c18] R. L. Kelly, G. L. Kane, and F. Henyey, Phys. Rev. Letters 24, 1511 (1970)

[c19] R. Dolen, D. Horn, and C. Schmid, Phys. Rev. 166, 1768 (1968)

[c20] R. Anthony et al., Phys. Rev. Letters 21, 1605 (1968)

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Positive-Pion Photoproduction in the Backward Direction

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