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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 (~1–3 GeV) using the simple vector-meson dominance (SVMD) model, i.e., the low-lying vector mesons (ρ~0, ω, and Φ mesons) were considered. The nuclear shadowing is reinvestigated using the generalized vector meson (GVMD) model, where the higher ρ meson effective state (ρ′ 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:多GEV区域中的光子核反应发生,因为电磁和辐射相互作用。由于光子的脊柱波动,即矢量介子,后者源自。由于载体中胚轴(HOLRONIC)相互作用,反应的总横截面被遮蔽。为了定量估计它,使用简单的载体偏移量(SVMD)模型,即低位载体介于(ρ〜0)在低能量区域(〜1-3 gev)中计算光核反应的横截面。考虑了ω和φmesons)。使用广义的载体蒙塞(GVMD)模型重新调用核阴影,其中较高的ρMESON有效状态(ρ'MESON)与低洼的载体蒙斯顿一起考虑。使用GVMD模型,在上述能量区域中计算了光子核反应的总横截面。将计算结果与测量光谱进行比较。

著录项

  • 来源
    《Physical Review C》 |2017年第2017期|034616.1-034616.5|共5页
  • 作者

    Swapan Das;

  • 作者单位

    Nuclear Physics Division Bhabha Atomic Research Centre Trombay Mumbai 400085 India and Homi Bhabha National Institute Anushakti Nagar Mumbai 400094 India;

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  • 正文语种 eng
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