论文标题
LHC处W性质的精确测量
Precision measurements of W properties at LHC
论文作者
论文摘要
利用W型生产中的大量收集事件和在LHC处衰减中的对称性，可以测量横向动量和速度和速度和角系数的W双差分横截面。使用所提出的方法，可以通过前所未有的粒度确定W玻色子横向动量的综合光谱，并且相对于最先进的发生器而言提高了精度。这使得通过直接将W产生直接限制在数据上，以竞争性不确定性对W质量进行理论反应测量。本文显示了在运行2期间CMS收集的事件的一部分中得出的初步结果，其集成的光度为36 Fb-1。
Exploiting the large number of collected events and the symmetries in the W production and decay at LHC, it is possible to measure the W double differential cross section of transverse momentum and rapidity and the angular coefficients. With the proposed method a determination of the integrated spectrum of transverse momentum of W bosons is possible with an unprecedented granularity and increased precision with respect to the state-of-the-art generators. This enables the possibility to perform a theory-agnostic measurement of the W mass with competitive uncertainty by constraining the W production directly on data. This paper shows preliminary results derived on a subset of events collected by CMS during Run 2, for an integrated luminosity of 36 fb-1.
