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11–12 Jun 2018
IHEP
Asia/Shanghai timezone

WV analysis improvements with DeepAK8

11 Jun 2018, 10:15
20m
A415 (IHEP)

A415

IHEP

19B, Yuquan Road, Shijingshan District, Beijing

Speaker

Mr Cheng Chen (PKU)

Description

Reconstruction and identification of boosted heavy particles (top/W/Z/Higgs) can provide powerful handles for new physics searches at the LHC. DNN-based DeepAK8 tagger was investigated in the WV search. The report includes DNN distribution, DNN control plots, W-tagging, and the uplimit results using alpha method. We also designed a mass-decorrelated DeepAK8 tagger. The results were greatly improved compared with the results of tau21 cut.

Summary

We investigated DNN-based DeepAK8 tagger in the WV search. Tau21 was repaced by DNNW for optimization. Alpha method was used to get the limits, DNNW cut performs better than before. The thin disturbutions of jet mass cause large uncertainty using alpha method. It effects the uplimit results much. The results still need to be improved. We are trying to get the uplimit only depending on MC sample without using alpha method.

Primary authors

Mr Cheng Chen (PKU) Mr Huang Huang (PKU) Mr Huilin Qu (UCSB) Prof. Loukas Gouskos (UCSB) Prof. Qiang Li (PKU) Mr Xudong Lyu (PKU)

Presentation materials