Bjorken sum rule at low Q^2

Details Bjorken sum rule at low Q^2 Bjorken sum rule at low Q^2

2002-07-20

arxiv.org/abs/hep-ph/0207252v1

Phys.Lett. B545 (2002) 323-328

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 eps figures

Scientific paper

10.1016/S0370-2693(02)02617-5

A description of the generalized Gerasimov-Drell-Hearn sum rules for proton and neutron is suggested, using their relation to the Bjorken sum rule. The results support an earlier conjecture, that the structure function g_T features a smooth Q^2-dependence, while the structure function g_2 is changing rapidly, due to the elastic contribution to the Burkhardt-Cottingham sum rule. A possible violation of this later sum rule is briefly discussed.

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