CAS Key Laboratory of Theoretical Physics |
Institute of Theoretical Physics |
Chinese Academy of Sciences |
Seminar |
Title 题目 | Improving measurement on Higgs-gluon effective coupling |
Speaker 报告人 | |
Affiliation 所在单位 | |
Date 日期 | 2:00pm, Apr 24, 2019, Wednesday | | |
Venue 地点 | ITP South (New) Building 6420 |
Abstract 摘要 | In this talk we will introduce new jet substructure observables constructed with the jet energy profile and Convolutional Neural Networks to improve the precision measurement of Higgs boson-gluon effective coupling at lepton colliders. By using these methods the uncertainty of the effective coupling can be further reduced by about 30% compared to that using conventional method in the channel of a Z boson decaying to lepton pair in the MC simulation for the center-of-mass energy 250 GeV and integrated luminosity 5 ab^-1. We also searched the influence of different parton showers on jet substructure recognition. The difference between the expected uncertainty of the effective coupling using PYTHIA and HERWIG data is about 0.1%. |
Contact Person 所内联系人 | Gang Yang |