用{ \it in situ}喷注能量标度测量双轻子通道中的顶夸克质量
Top-Quark Mass Measurement in the Dilepton Channel Using {\it in situ} Jet Energy Scale Calibration
摘要：
我们在双轻子通道中采用了顶夸克质量测量技术，并用{ \it in situ}喷注能量标度进行了标定。三个变量具有不同的喷流能量标度的依赖性，同时使用提取不仅顶夸克质量，但也从一个单一的似然拟合的喷流的能量标度。用蒙特卡罗方法研究了在大型强子对撞机$\sqrt{s} = 7$ TeV上5 fb $^{-1}$质子-质子碰撞的积分亮度。我们的分析表明，整体喷流能量标度的不确定性可以显着降低，顶夸克质量可以确定的精度小于1 GeV/c $^2$，包括喷流能量标度的不确定性，在大型强子对撞机。
英文摘要：
We employ a top-quark mass measurement technique in the dilepton channel with {\it in situ} jet energy scale calibration. Three variables having different jet energy scale dependences are used simultaneously to extract not only the top-quark mass but also the energy scale of the jet from a single likelihood fit. Monte Carlo studies with events corresponding to an integrated luminosity of 5 fb$^{-1}$ proton-proton collisions at the Large Hadron Collider $\sqrt{s} = 7$ TeV are performed. Our analysis suggests that the overall jet energy scale uncertainty can be significantly reduced and the top-quark mass can be determined with a precision of less than 1 GeV/c$^2$, including jet energy scale uncertainty, at the Large Hadron Collider.
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