On factorization, quark counting and vector dominance

  • M.M. Block
  • F. Halzen
  • G. Pancheri
Theoretical physics


Using an eikonal structure for the scattering amplitude, Block and Kaidalov [1] 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 [1] hold,

– the additive quark model holds to \(\approx 1\%\),

– and vector dominance holds to better than \(\approx 4\%\).


Quark Model General Assumption Slope Parameter Experimental Confirmation Factorization Theorem 
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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • M.M. Block
    • 1
  • F. Halzen
    • 2
  • G. Pancheri
    • 3
  1. 1.Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA US
  2. 2.Department of Physics, University of Wisconsin, Madison, WI 53706, USA US
  3. 3.INFN-Laboratori Nazionali di Frascati, 00044 Frascati, Italy IT

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