It is shown that in the ultra-high energy neutrino interactions the higher
twist corrections brought about by the non-conservation of the top-bottom
current dramatically change the longitudinal structure function, FL​. To the
Double Leading Log Approximation simple and numerically accurate formulas for
FL​ and σνN are derived.Comment: 5 pages, 1 figure, Talk given at Diffraction 2010, Otranto (Lecce),
Italy, September 10-15, 201