论文标题
在LHC生产四个顶级夸克的阈值重新召集
Threshold resummation for the production of four top quarks at the LHC
论文作者
论文摘要
我们计算$ t \ bar {t} t \ bar {t} $生产的总横截面。这是第一次针对最终状态的强子挑选过程进行重新召集。该计算与近代领先的顺序强和静电校正。 NLL $^{\ PRIME} $校正将总生产率提高了26 \％。由于比例变化引起的理论误差的大小减少了近两个因素，从而使理论误差显着低于当前测量的实验不确定性。
We compute the total cross section for $t\bar{t}t\bar{t}$ production at next-to-leading logarithmic (NLL$^{\prime}$) accuracy. This is the first time resummation is performed for a hadron-collider process with four colored particles in the final state. The calculation is matched to the next-to-leading order strong and electroweak corrections. The NLL$^{\prime}$ corrections enhance the total production rate by 26\%. The size of the theoretical error due to scale variation is reduced by close to a factor of two, bringing the theoretical error significantly below the current experimental uncertainty of the measurement.
