论文标题
小型$ p_t $和大的$ x $区域，用于横向动量分布
Small-$p_T$ and large-$x$ regions for Higgs transverse momentum distributions
论文作者
论文摘要
最近表明，对于$ q/p_t $的对数的标准重新调整可以补充，以大的$ x = q^2/s $在无色最终状态（例如通过gluon融合或通过drell-drell-yan机械产生生产的HIGGS）的对数贡献的重新召集。这种改善的横向动量重新召集考虑了以很小的角度发射的软排放。我们报告了对阈值提高的$ p_t $的联合现象学研究以及对在LHC生产的Higgs玻色子的阈值重新召集形式主义，该玻色子在LHC上产生的小$ P_T $和阈值对数分别重新定位至NNLL和NNLL*。我们表明，修改后的$ p_t $重新召集的效果在小$ p_t $区域中产生更快的扰动收敛，而阈值的效果可以改善中等和大的$ $ p_t $区域中的固定顺序计算协议。
It was shown recently that standard resummation of logarithms of $Q/p_T$ can be supplemented with the resummation of logarithmic contributions at large $x=Q^2/s$ in the case of a colourless final state such as Higgs produced via gluon fusion or the production of a lepton pair via Drell--Yan mechanism. Such an improved transverse momentum resummation takes into account soft emissions that are emitted at very small angles. We report on recent phenomenological studies of a combined threshold-improved $p_T$ and threshold resummation formalism to the Higgs boson produced at the LHC where small-$p_T$ and threshold logarithms are resummed up to NNLL and NNLL* respectively. We show that the effect of the modified $p_T$ resummation yields a faster perturbative convergence in the small-$p_T$ region while the effect of the threshold one improves the agreement with fixed-order calculations in the medium and large-$p_T$ regions.
