Color dipoles, PCAC and Adler's theorem
R. Fiore*, V. R. Zoller1) +
*Dipartimento di Fisica, Universitàdella Calabria
*Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, I-87036 Rende, Cosenza, Italy
+Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
PACS: 12.38.-t
Abstract
Being reformulated in the color dipole basis of small-x QCD
Adler's theorem establishes a connection between perturbative
and non-perturbative descriptions of DIS and quantifies the effect
of non-perturbative dynamics on would-be-perturbative observables.
In particular, it provides
a quantitative measure of the non-perturbative
influence on the longitudinal
structure function in charged current DIS and
imposes stringent constraints on non-perturbative parameters of
color dipole models. Our analysis calls for new experimental tests of
Adler's theorem in diffractive
neutrino scattering.