An explicit evaluation of the spin asymmetry of the deuteron and the associated GDH sum rule is presented which includes disintegration, single and double pion and eta production. For the GDH integral a large cancellation is found between the disintegration channel and the meson production channels. Furthermore, first results for the contribution of the disintegration channel to the generalized GDH integral at constant four-momentum transfer reveal a dominance of the isovector M1 transition to the $^1$S$_0$-state near threshold resulting in a negative contribution with a minimum around $Q^2\approx 0.2$ fm$^{-2}$ which is driven by the nucleon anomalous isovector magnetic moment.
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机译：给出了氘核自旋不对称性的明确评估以及相关的GDH和规则，其中包括崩解，单和双介子和eta生成。对于GDH积分，在分解通道和介子生产通道之间发现了较大的抵消。此外，在恒定的四动量转移下，分解通道对广义GDH积分的贡献的初步结果表明，等矢量M1跃迁到接近阈值的$ ^ 1 $ S $ _0 $状态占主导地位，从而导致负贡献。最小约为$ Q ^ 2 \约0.2 $ fm $ ^ {-2} $，这是由核子反常等矢量磁矩驱动的。
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