论文标题
NLO NRQCD重型Quarkonium生产计算中的偶极子减法与相位空间切片
Dipole Subtraction vs. Phase Space Slicing in NLO NRQCD Heavy-Quarkonium Production Calculations
论文作者
论文摘要
我们比较了两种方法来评估涉及$ s $ - $ s $ - 和$ p $ - 波的fock fock的近QCD的重量产量的跨段：基于相位空间切片的习惯方法，以及基于我们最近由US进行的Dipole Subtraction的方法。我们发现这两个实现的数值结果之间有合理的一致性，但是偶极子减法实现优于相对于准确性和速度，相位空间切片。
We compare two approaches to evaluate cross sections of heavy-quarkonium production at next-to-leading order in nonrelativistic QCD involving $S$- and $P$-wave Fock states: the customary approach based on phase space slicing and the approach based on dipole subtraction recently elaborated by us. We find reasonable agreement between the numerical results of the two implementations, but the dipole subtraction implementation outperforms the phase space slicing one both with regard to accuracy and speed.
