论文标题
在QCD的NNLO上运行顶级夸克质量
Running of the top quark mass at NNLO in QCD
论文作者
论文摘要
首次在量子染色体动力学中以近代的次数到领先顺序探测顶级夸克质量（$ m_ \ mathrm {t} $）的运行。结果是通过将修改的最小减法中的计算（$ \ MATHRM {\ MATHRM {\ MS}} $）与CMS进行术语的重级化方案而获得的，从而导致对顶级夸克 - Antiquark的差异测量13〜 \ mathrm {tev} $。 $ M_ \ MATHRM {T} $的比例依赖性作为$ \ Mathrm {t \ bar {t}} $ System的不变质量的函数提取，高达约0.5〜\ Mathrm {tev} $的能量标度。发现观察到的跑步与量子染色体动力学的重新量法化组方程的三环解非常吻合。
The running of the top quark mass ($m_\mathrm{t}$) is probed at the next-to-next-to-leading order in quantum chromodynamics for the first time. The result is obtained by comparing calculations in the modified minimal subtraction ($\mathrm{\overline{MS}}$) renormalisation scheme to the CMS result on differential measurement of the top quark-antiquark ($\mathrm{t\bar{t}}$) production cross section at $\sqrt{s} = 13~\mathrm{TeV}$. The scale dependence of $m_\mathrm{t}$ is extracted as a function of the invariant mass of the $\mathrm{t\bar{t}}$ system, up to an energy scale of about $0.5~\mathrm{TeV}$. The observed running is found to be in good agreement with the three-loop solution of the renormalisation group equations of quantum chromodynamics.
