论文标题
半化媒介介子生产半熟悉
Polarized vector meson production in semi-inclusive DIS
论文作者
论文摘要
我们对半偏见的Lepton-Nucleon深度非弹性散射$ e^-n \ to E^-VX $进行了偏振媒介中的产生的系统计算。我们考虑在高能量下具有中性电流电流相互作用的一般情况，这会引起平等侵略效应。我们为该过程提供了一般的运动学分析，并表明横截面由81个结构函数表达。我们进一步给出了该过程的Parton模型计算，并根据横向动量依赖的Parton分布函数和碎片函数显示了结构函数的结果，并在领先顺序和扰动量子质量动力学的领先扭曲下进行了碎片。结果表明，该顺序有27个非零结构函数，其中15个与载体中膜的张量极化有关。 13个结构函数是通过平均侵入效应产生的。我们还提出了结果和对载体介子自旋比对的粗略数值估计。
We make a systematic calculation for polarized vector meson production in semi-inclusive lepton-nucleon deep inelastic scattering $e^-N\to e^-VX$. We consider the general case of neutral current electroweak interactions at high energies which give rise to parity-violating effects. We present a general kinematic analysis for the process and show that the cross sections are expressed by 81 structure functions. We further give a parton model calculation for the process and show the results for the structure functions in terms of the transverse momentum dependent parton distribution functions and fragmentation functions at the leading order and leading twist of perturbative quantum chromodynamics. The results show that there are 27 nonzero structure functions at this order, among which 15 are related to the tensor polarization of the vector meson. Thirteen structure functions are generated by parity-violating effects. We also present the result and a rough numerical estimate for the spin alignment of the vector meson.
