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Improving measurement on Higgs-gluon effective coupling
2019-04-24  【 】【打印】【关闭

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

Zhao Li

Affiliation

所在单位

IHEP, CAS

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
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