Steffens, F. M. [UNESP]Tsushima, K. [UNESP]2022-04-282022-04-282004-01-01Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 70, n. 9, 2004.1550-23681550-7998http://hdl.handle.net/11449/225027We use local quark-hadron duality to calculate the nucleon structure function as seen by neutrino and muon beams. Our result indicates a possible signal of charge symmetry violation at the parton level in the very large [Formula Presented] region. © 2004 The American Physical Society.engArtigo10.1103/PhysRevD.70.0940402-s2.0-37649026698