We study shadowing and antishadowing corrections to the flavor nonsinglet structure function F23He-F23H and show that the difference between the one-particle density distributions of 3He and 3H plays an important role at very small x. We find that the flavor nonsinglet structure function in these mirror nuclei is enhanced at small x by nuclear shadowing, which increases the nuclear Gottfried integral, integrated from 10-4 to 3, by 15-41 %. When integrated from zero, the Gottfried integral is divergent for these mirror nuclei. It seems likely that, as a consequence of charge symmetry breaking, this may also apply to the proton-neutron system.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)