Photonucleon Total Cross Sections at Very High Energy

Details Photonucleon Total Cross Sections at Very High Energy Photonucleon Total Cross Sections at Very High Energy

Aug 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970phrvl..25..613h&link_type=abstract

Physical Review Letters, vol. 25, Issue 9, pp. 613-616

Physics

35

Scientific paper

Photon-neutron total cross sections have been evaluated from the data for the proton and deuteron presented in the preceding paper. Simple Regge-pole fits have been made to σT(γp) and σT(γn), both of which extrapolate to 94 +/- 4 μb at infinite energy. Over the range of our data, 3.7 to 17.9 GeV, σT(γn)<σT(γp), which can be interpreted to give a ratio of exchange contributions, A2P'=0.19+/-0.04. A fit to σT(γp) is also important for predictions of the proton cosmic-ray spectrum.

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