A general analysis of polarization phenomena for coherent pion electroproduction on deuterons is presented. The spin and isospin structures of the gamma* + d --> d + P-0 amplitudes (where gamma* is a virtual photon) are established and relationships between meson electroproduction on deuterons and on nucleons are given in the framework of the impulse approximation. The reaction e + d --> e + d + pi(0) is investigated in detail, for a relatively large value of momentum transfer, 0.5 GeV2 less than or equal to -k(2) less than or equal to 2 GeV2, both at threshold and in the region of Delta-isobar excitation. Special attention is devoted to the sensitivity of different contributions to the exclusive cross section for d(e, epi(0))d, as the gamma*piomega form factor or the NN-potential. The predicted k(2)-dependence of the cross section agrees well with the available experimental data. (C) 2002 Elsevier Science (USA). [References: 56]
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机译:介绍了氘核上相干介子电产生的极化现象的一般分析。建立了伽马* + d-> d + P-0振幅的自旋和同位旋结构(其中伽马*是虚拟光子),并在脉冲近似的框架中给出了氘核和核子上介子电产生之间的关系。详细研究了反应e + d-> e + d + pi(0),对于较大的动量传递值,小于或等于0.5 GeV2 --k(2)小于或等于2 GeV2,无论在阈值还是在Delta等压线激励区域。特别注意d(e,epi(0))d作为g * piomega形状因子或NN势对d(e,epi(0))d的唯一横截面的不同贡献的敏感性。横截面的预测k(2)-依赖性与可用的实验数据非常吻合。 (C)2002 Elsevier Science(美国)。 [参考:56]
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