# Effect of bound nucleon internal structure change on nuclear structure functions

Source: [Effect of bound nucleon internal structure change on nuclear structure functions](<https://www.sota2.com/research/paper/68fa2de91e209131ce85d83d>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T16:33:35.164Z

Authors: K. Tsushima, K. Saito, F.M. Steffens

Published: 2004-09-17T19:12:02.000Z

## Abstract

Effect of bound nucleon internal structure change on nuclear structure functions is investigated based on local quark-hadron duality. The bound nucleon structure functions calculated for charged-lepton and (anti)neutrino scattering are all enhanced in symmetric nuclear matter at large Bjorken-$x$ ($x \\agt 0.85$) relative to those in a free nucleon. This implies that a part of the enhancement observed in the nuclear structure function $F\_2$ (in the resonance region) at large Bjorken-$x$ (the EMC effect) is due to the effect of the bound nucleon internal structure change. However, the $x$ dependence for the charged-lepton and (anti)neutrino scattering is different. The former \[latter\] is enhanced \[quenched\] in the region $0.8 \\alt x \\alt 0.9$ \[$0.7 \\alt x \\alt 0.85$\] due to the difference of the contribution from axial vector form factor. Because of these differences charge symmetry breaking in parton distributions will be enhanced in nuclei.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/hep-ph/0409217>)

[PDF](<https://arxiv.org/pdf/hep-ph/0409217.pdf>)