Phys. Rev. Lett. 93, 202301 (2004) [4 pages]Spin Asymmetry and Gerasimov-Drell-Hearn Sum Rule for the DeuteronReceived 20 July 2004; published 11 November 2004 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 μb to be compared to the sum rule value 0.65 μb. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.202301
DOI:
10.1103/PhysRevLett.93.202301
PACS:
24.70.+s, 11.55.Hx, 25.20.Lj, 27.10.+h
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