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Shadowing in low-energy photonuclear reactions

机译:低能量光子反应的阴影

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摘要

The photonuclear reaction in the multi-GeV region occurs because of the electromagnetic and hadronic interactions. The latter originates due to the hadronic fluctuation, i.e., vector meson, of the photon. The total cross section of the reaction is shadowed because of the vector meson-nucleus (hadronic) interaction. To estimate it quantitatively, the cross section of the photonuclear reaction was calculated in the low energy region (similar to 1-3 GeV) using the simple vector-meson dominance (SVMD) model, i.e., the low-lying vector mesons (rho(0), omega, and phi mesons) were considered. The nuclear shadowing is reinvestigated using the generalized vector meson (GVMD) model, where the higher. meson effective state (rho' meson) is taken into account along with the low-lying vector mesons. Using the GVMD model, the total cross section of the photonuclear reaction are calculated in the above mentioned energy region. The calculated results are compared with the measured spectra.
机译:由于电磁和辐射相互作用,多GEV区域中的光核反应发生。 由于Photon的脊柱波动,即矢量梅森,后者源于光子。 由于载体中胚轴(HOTRONIC)相互作用,反应的总横截面被遮蔽。 为了定量估计它,使用简单的载体偏振片优势(SVMD)模型,即低位载体蒙斯顿(RHO( 考虑了0),欧米茄和披脊阶段)。 使用较高的载体介质(GVMD)模型来重新调用核阴影,其中更高。 介子有效状态(Rho'Meson)与低洼的矢量介子一起考虑。 使用GVMD模型,在上述能量区域中计算光子核反应的总横截面。 将计算结果与测量光谱进行比较。

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