New experiments on electron–positron annihilation are causing great excitement and some consternation among advocates of quarks, partons, light‐cone algebra and asymptotic freedom. All these theories predict that the ratio R of the cross section for producing hadrons to the cross section for producing two muons should be a constant for sufficiently high energy. The constant can be anywhere from 2/3 to 6, in theories now in vogue. It was generally believed that we were already at sufficiently high energy for this asymptotic behavior to be observable.
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© 1974 American Institute of Physics.
1974
American Institute of Physics
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