Av. Kotikov et G. Parente, INDIRECT DETERMINATION OF THE RATIO R=SIGMA(L) SIGMA(T) AT SMALL-X FROM HERA DATA/, Journal of experimental and theoretical physics, 85(1), 1997, pp. 17-19
The value of the deep inelastic scattering cross-section ratio R = sig
ma(L)/sigma(T) found in the range 10(-4)less than or equal to x less t
han or equal to 10(-2) from F-2 and dF(2)/d In Q(2) HERA data using ve
ry simple relations based on perturbative QCD. (C) 1997 American Insti
tute of Physics.