论文标题
从$ z $ -boson横向摩托姆分布确定强耦合常数
Determination of the strong-coupling constant from the $Z$-boson transverse-momentum distribution
论文作者
论文摘要
强耦合常数由通过扰动QCD中的三阶预测进行预测，从通过Drell-Yan工艺产生的$ Z $玻色子的横向摩肌分布的低摩孔区域确定。该分析采用$ \ sqrt {s} = 1.96 $ tev的质子质量碰撞中进行的测量，并通过CDF实验。与$ z $ -boson质量相对应的参考量表的强耦合的确定值为$α_s（m_z）= 0.1191^{+0.0013} _ { - 0.0016} $。
The strong-coupling constant is determined from the low-momentum region of the transverse-momentum distribution of $Z$ bosons produced through the Drell-Yan process, using predictions at third order in perturbative QCD. The analysis employs a measurement performed in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 1.96$ TeV with the CDF experiment. The determined value of the strong coupling at the reference scale corresponding to the $Z$-boson mass is $α_S(m_Z) = 0.1191^{+0.0013}_{-0.0016}$.
