Non - singlet structure function of the 3 He - 3 H system and divergence of the Gottfried integral
نویسندگان
چکیده
We study shadowing and antishadowing corrections to the flavor nonsinglet structure function F 3He 2 − F 3H 2 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 non-singlet 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 1, by 11÷ 36%. 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.
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