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arXiv 0801.2868nucl-th
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核子模型和JLab实验中氘核形状因子的渐近性

Asymptotics of the deuteron form factors in the nucleon model and JLab experiments

A. F. Krutov, V. E. Troitsky, N. A. Tsirova

摘要:

利用Poincaré不变量量子力学的瞬时形式动力学和修正的相对论冲量近似,计算了氘核作为双核子系统的电磁形状因子的渐近性.我们表明,今天的实验上的弹性$ed$散射已达到渐近制度。估计了在未来的JLab实验中可以看到夸克自由度时动量转移的可能范围。给出了氘在$r=0$上的波函数行为与形状因子渐近性之间的显式关系。给出了用QCD和夸克计数定则预言的渐近性的波函数条件。

英文摘要:

Using the instant form dynamics of Poincaré invariant quantum mechanics and the modified relativistic impulse approximation proposed previously we calculate asymptotics of electromagnetic form factors for the deuteron considered as two--nucleon system. We show that today experiment on the elastic $ed$-scattering has reached asymptotic regime. The possible range of momentum transfer when the quark degrees of freedom could be seen in future JLab experiments is estimated. The explicit relation between the behavior of deuteron wave function at $r=0$ and the form factors asymptotics is obtained. The conditions on wave functions to give the asymptotics predicted by QCD and quark counting rules are formulated.

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