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Updated: Aug 20, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Spin asymmetry and Gerasimov-Drell-Hearn sum rule for the deuteron
Hartmuth Arenhövel1, Alexander Fix, Michael Schwamb
1Institut für Kernphysik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany.
Abstract:
An explicit evaluation of the spin asymmetry of the deuteron and the associated Gerasimov-Drell-Hearn sum rule is presented which includes photodisintegration, and single and double pion and eta production as well. Photodisintegration is treated with a realistic retarded potential and a corresponding meson exchange current. For single pion and eta production the elementary operator from MAID is employed, whereas for double pion production, an effective Lagrangian approach is used. A large cancellation between the disintegration and the meson production channels yields for the explicit GDH integral a value of 27.31 microb to be compared to the sum rule value 0.65 microb.
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