Document Type : Research Paper

Author

Dept. of Physics - College of Science- University of Anbar

Abstract

Regge model has been used to calculate photon – photon total cross section. The couplings of the exchanged soft pomeron, hard pomeron and Reggeons with photons have been calculated. It has been assumed that soft and hard pomerons couple to photons in away similar to that of the pseudo scalar mesons. A comparison with data on photon-photon total cross section shows a good agreement

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[1] A. Corestti, R.M. Godbole and Pancheri, hep-ph/9707360; R. M. Godbole, A. Grua and Pancheri, hep-th/9908220.
[2] PLUTO Collaboration: Ch. Berger et al., Phys. Lett. B149 (1984) 421; TPC/2 Collaboration:   H. Aihara et al., Phys. Rev. D41 (1990)2667; S. E. Baru et al. Z- Phys. C53 (1992)21.
[3]  L3 Collaboration: M. Acciarri et al., CERN PPE-97-48.
[4]  F. Wackerle, hep-ex /9710005.
[5]  A. Donnachie and P. Landshoff  hep-ph/0402081. and Phys. Lett. B595 (2004) 393.
[6]  L3 Collaboration: Phys. Lett. B519 (2001) 33.
[7]  G. Abbendi et al., European journal C14 (2000) 199.
[8]  A. Donnachie and P. Landshoff, Phys. Lett. B437 (1998) 408 and B518 (2001) 63.
[9]  L3 Collaboration: M Acciari et al., Phys. Lett. B514 (2001) 19.
[10]  P. Collins and A. Martins, Hadrons interactions, (Adam Hilger, Bristol, 1984).
[11]  G. 't Hooft and M. Veltemann, Nucl. Phys. B153 (1979) 39 ; K. M. Hamad Journal of Al-Anbar Un. V.1(2007) 39.
[12]  Paul Singer, Phys. Lett. B124  (1983) 531.
[13]  M. Greco and Y. Srivastave, Nuovo Cim. 43A (1978) 88.