6533b7d4fe1ef96bd1262ae4
RESEARCH PRODUCT
Spin Asymmetry and Gerasimov-Drell-Hearn Sum Rule for the Deuteron
Hartmuth ArenhövelM. SchwambA. Fixsubject
PhysicsParticle physicsMesonNuclear TheoryOperator (physics)media_common.quotation_subjectNuclear TheoryGeneral Physics and AstronomyFOS: Physical sciencesAsymmetryNuclear physicsNuclear Theory (nucl-th)PionPhotodisintegrationProduction (computer science)High Energy Physics::ExperimentSum rule in quantum mechanicsNuclear Experimentmedia_commonSpin-½description
An explicit evaluation of the spin asymmetry of the deuteron and the associated GDH sum rule is presented which includes photodisintegration, 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 Lagrangean 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 $\mu$b to be compared to the sum rule value 0.65 $\mu$b.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-07-20 |