Effective LHC measurements with matrix elements and machine learning
Effective LHC measurements with matrix elements and machine learning
复制标题
利用矩阵元素和机器学习进行有效的大型强子对撞机测量
DOI:
10.1088/1742-6596/1525/1/012022
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Pavez, J.
中科院分区:
文献类型:
--
作者:
Brehmer, J.;Cranmer, K.;Espejo, I.;Kling, F.;Louppe, G.;Pavez, J.
One major challenge for the legacy measurements at the LHC is that the likelihood function is not tractable when the collected data is high-dimensional and the detector response has to be modeled. We review how different analysis strategies solve this issue, including the traditional histogram approach used in most particle physics analyses, the Matrix Element Method, Optimal Observables, and modern techniques based on neural density estimation. We then discuss powerful new inference methods that use a combination of matrix element information and machine learning to accurately estimate the likelihood function. The MadMiner package automates all necessary data-processing steps. In first studies we find that these new techniques have the potential to substantially improve the sensitivity of the LHC legacy measurements.