论文标题
$λ_C^+$碎片函数来自PQCD方法和Suzuki模型
$Λ_c^+$ fragmentation functions from pQCD approach and the Suzuki model
论文作者
论文摘要
通过数据分析，我们为$λ_c^+$ baryon提供了新的非驱动性碎片函数（FFS），均以领先者和近代领先顺序（NLO）（NLO），以及在最小的细微分支分支方案中首次以五个无质量的quarks的近代到nnlo）。 FF是通过拟合所有可用数据的$ E^+e^ - $ nihilation的包容性单$λ_c^+$ baryon生产的数据来确定的，由Cern Lep1的蛋白石协作和Kekb的Belle合作进行。我们还估计了$λ_C^+$ ffs以及相应的观测值中的不确定性。在基于铃木模型的完全不同的方法中，我们将理论上从Charm Quark计算$λ_C^+$ ff，并在领先顺序扰动QCD框架上介绍我们的结果。比较证实了两种方法之间的良好一致性。我们还将应用$λ_C^+$ ffs来对通过顶部夸克衰变产生的$λ_c^+$的能量分布进行理论预测，该预测可在CERN LHC上测量。
Through data analysis, we present new sets of nonperturbative fragmentation functions (FFs) for $Λ_c^+$ baryon both at leading and next-to-leading order (NLO) and, for the first time, at next-to-next-to-leading order (NNLO) in the minimal subtraction factorization scheme with five massless quarks. The FFs are determined by fitting all available data of inclusive single $Λ_c^+$ baryon production in $e^+e^-$ annihilation taken by the OPAL Collaboration at CERN LEP1 and Belle Collaboration at KEKB. We also estimate the uncertainties in the $Λ_c^+$ FFs as well as in the corresponding observables. In a completely different approach based on the Suzuki model, we will theoretically calculate the $Λ_c^+$ FF from charm quark and present our result at leading order perturbative QCD framework. A comparison confirms a good consistency between both approaches. We will also apply the $Λ_c^+$ FFs to make theoretical predictions for the energy distribution of $Λ_c^+$ produced through the top quark decay, to be measured at the CERN LHC.
