论文标题
来自DRELL-YAN和半包含深层弹性散射数据的全球拟合的非偏振横向动量分布
Unpolarized Transverse Momentum Distributions from a global fit of Drell-Yan and Semi-Inclusive Deep-Inelastic Scattering data
论文作者
论文摘要
我们提出了基于从几个实验中的两千多个数据点来提取非偏振横向依赖性的部分分布和碎片函数，用于两个不同的过程：半包含的深层弹性散射和Lepton Pairs的Drell-Yan产生。基线分析是用蒙特卡洛复制方法进行的，该方法以N3LL精度重新召集大对数。数据的结果描述非常好（$χ^2/n _ {\ rm dat} = 1.06 $）。对于半包含的深弹性散射，通过通过高阶扰动校正引入的数据来治愈差异的因素来归一化。
We present an extraction of unpolarized transverse-momentum-dependent parton distribution and fragmentation functions based on more than two thousands data points from several experiments for two different processes: semi-inclusive deep-inelastic scattering and Drell-Yan production of lepton pairs. The baseline analysis is performed with a Monte Carlo replica method resumming large logarithms at N3LL accuracy. The resulting description of the data is very good ($χ^2/N_{\rm dat} = 1.06$). For semi-inclusive deep-inelastic scattering, predictions for multiplicities are normalized by factors that cure the discrepancy with data introduced by higher-order perturbative corrections.
