Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-10-23
Phys.Rev.Lett.97:252003,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 2 figures
Scientific paper
10.1103/PhysRevLett.97.252003
We fit the reduced cross section for deep-inelastic electron scattering data to a three parameter ln^2 s fit, A + beta ln^2 (s/s_0), where s= [Q^2/x] (1-x) + m^2, and Q^2 is the virtuality of the exchanged photon. Over a wide range in Q^2 (0.11 < Q^2 < 1200 GeV^2) all of the fits satisfy the logarithmic energy dependence of the Froissart bound. We can use these results to extrapolate to very large energies and hence to very small values of Bjorken x -- well beyond the range accessible experimentally. As Q^2 --> infinity, the structure function F_2^p(x, Q^2) exhibits Bjorken scaling, within experimental errors. We obtain new constraints on the behavior of quark and antiquark distribution functions at small x.
Berger Edmond L.
Block Martin M.
Tan Chung-I
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