Search for tt?H Production in the H ? bb? Decay Channel:Using Deep Learning Techniques with the CMS Experiment(Springer Theses)

探索 H→bb̅衰减通道中 tt̄H 的产生:运用深度学习技术与 CMS 实验

物理学其他学科

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发货周期:预计8-10周发货
作      者
出  版 社
出版时间
2021年03月30日
装      帧
精装
ISBN
9783030653798
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页      码
204
语      种
英文
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图书简介
In 1964, a mechanism explaining the origin of particle masses was proposed by Robert Brout, François Englert, and Peter W. Higgs. 48 years later, in 2012, the so-called Higgs boson was discovered in proton-proton collisions recorded by experiments at the LHC. Since then, its ability to interact with quarks remained experimentally unconfirmed.This book presents a search for Higgs bosons produced in association with top quarkstt?Hin data recorded with the CMS detector in 2016. It focuses on Higgs boson decays into bottom quarksH ?bb?and top quark pair decays involving at least one lepton. In this analysis, a multiclass classification approach using deep learning techniques was applied for the first time. In light of the dominant background contribution fromtt?production, the developed method proved to achieve superior sensitivity with respect to existing techniques. In combination with searches in different decay channels, the presented work contributed to the first observations oftt?Hproduction and H?bb?decays.
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