论文标题
在很小的x处的深度非弹性散射中的核阴影
Nuclear shadowing in deep inelastic scattering on nuclei at very small x
论文作者
论文摘要
在中间质量核上深度非弹性散射对结构功能的核阴影校正是在Bjorken X的非常小的值和Q^2的小值（Q^2 <5 GEV^2）下计算的。在以前的作者作品中开发了两组分的方法，以描述深度非弹性散射的核子结构功能。结果表明，从具有高横向动量的QQ对角度来看，核子结构函数的硬组件几乎没有阴影。结果表明，在x的较小值下，阴影曲线的斜率变化取决于硬组件对核子结构函数的相对贡献（此贡献是x和q^2的函数）以及gluon饱和效应的大小。结果表明，根据x <10^-4的阴影的预测，对饱和效应的核算是必不可少的，具体取决于q^2的值。将几个核的核阴影数值计算结果与E665和NMC协作的可用数据进行了比较。
Nuclear shadowing corrections to the structure functions of deep inelastic scattering on intermediate-mass nuclei are calculated at very small values of Bjorken x and small values of Q^2 (Q^2<5 Gev^2). The two-component approach developed in previous works of authors for a description of the nucleon structure functions of deep inelastic scattering is used. It is shown that the hard component of the nucleon structure functions that arises, in terms of the colour dipole model, from qq-pairs with a high transverse momentum, is almost not shadowed. It is shown that a change of the slope of the shadowing curve with a decrease of x depends, at small values of x, on the relative contribution of the hard component to the nucleon structure function (this contribution is a function of x and Q^2) and on a size of gluon saturation effects. It is shown that an accounting for saturation effects becomes essential for predictions of shadowing at x<10^-4, depending on a value of Q^2. Results of numerical calculations of nuclear shadowing for several nuclei are compared with available data of the E665 and the NMC collaborations.
