论文标题

D0 Lepton+Jets Top质量测量的风味依赖性喷射能校正的重新校准引起的最高质量转移

Top Mass Shift Caused by the Recalibration of Flavor-Dependent Jet Energy Corrections in the D0 Lepton+Jets Top Mass Measurement

论文作者

Siikonen, Hannu

论文摘要

本文介绍并应用了一种将喷气能校正变化变化的方法中的D0顶部夸克质量测量。它将作为PRL提出最终结果的来源,后来将在期刊上或作者博士学位论文的一部分发表。当前测量的动机是由D0风味依赖性喷射能校正的重新校准引起的。重新校准是由观察到的D0运行IIB的校正与运行IIA的校正显着不同。重新校准分析能够表明,运行IIB校正应该类似于IIA的运行IIA。重新校准的射流能校正会对在顶部夸克衰减中产生的喷气机重建的顶级夸克产生影响。因此,依赖风味的喷气能校正的变化意味着需要修改最高质量测量,该质量测量由D0在Lepton+Jets通道中进行。 D0最高质量平均水平几乎完全取决于该测量值,因此对顶级质量世界平均水平有直接影响。 D0顶部质量测量的完整修订不太可能发生,因此本文使用较轻的方法证明了最终的质量转移。

This paper introduces and applies a method for propagating changes in jet energy corrections into a D0 top quark mass measurement. It will serve as a source for the PRL presenting it's final results, and will be later published in a journal, or as a part of the author's PhD thesis. Motivation for the present measurement arises from the recalibration of the D0 flavor-dependent jet energy corrections. The recalibration was driven by the observation that the corrections for D0 Run IIb differ notably from those of Run IIa. The recalibration analysis was able to show that the Run IIb corrections should have resembled more those of Run IIa. The recalibrated jet energy corrections have an influence on the reconstructed top quarks through the jets that are produced in top quark decays. Hence, a change in the flavor-dependent jet energy corrections implies the need to revise the top mass measurement, performed by D0 in the lepton+jets channel. The D0 top mass average is almost completely determined by this measurement, and hence it has a direct impact on the top mass world average. A complete revision of the D0 top mass measurement is unlikely to occur, and hence this paper demonstrates the resulting top mass shift using a lighter methodology.

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