On factorization, quark counting and vector dominance
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Using an eikonal structure for the scattering amplitude, Block and Kaidalov  have derived factorization theorems for nucleon-nucleon, \(\gamma p\) and \(\gamma\gamma\) scattering at high energies, using only some very general assumptions. We present here an analysis giving experimental confirmation for factorization of cross sections, nuclear slope parameters B and \(\rho\)-values (ratio of real to imaginary portion of forward scattering amplitudes), showing that:
– the three factorization theorems  hold,
– the additive quark model holds to \(\approx 1\%\),
– and vector dominance holds to better than \(\approx 4\%\).
KeywordsQuark Model General Assumption Slope Parameter Experimental Confirmation Factorization Theorem
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