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Probing Anomalous WW? Triple Gauge Bosons Coupling At LHeC

Posted on:2019-01-18Degree:MasterType:Thesis
Country:ChinaCandidate:R B LiFull Text:PDF
GTID:2370330548974265Subject:Theoretical Physics
Abstract/Summary:PDF Full Text Request
Since Higgs boson was discovered at CERN,all elementary particles predicted by the Stan-dard Model have been observed,which marks that the human cognition of the essence of the world have reached an unprecedented level.But behind the prosperity,there are still lots of unsolved problems,we called "New Physics' in the SM.In this thesis,we focus on one of the Beyond Stan-dard Model(BSM)problems—anomalous triple gauge bosons coupling vertex,and study collider phenomenology it at Large Hadron electron Collider(LHeC).Firstly,we introduce present and future large high energy colliders and essential content in the SM.Then we discuss some recent studies of the relevant problems at LHeC.Based on clear background and precious detector at LHeC,we probe BSM new signal—anomalous WW? triple gauge coupling vertex.The choice of single W production process is distinguished from other existing studies.Meanwhile,in order to utilize W boson polarization information we raise there different reconstruction methods of final state particles and reconstruct W boson decay polar angle and azimuthal angle between the final electron and jet in the thesis.The estimation of the sensitiv-ity to the anomalous triple gauge couplings is based on x2 method through kinematic differential distribution,which serve as a complement to the results at the total cross section level.Finally,we consider theoretical errors because of PDFs uncertainty and point out that the constraint of the anomalous WW? triple gauge coupling vertex might reach up to O(10-3)with the expectation of more precise PDFs and 2-3 ab-1 integrated luminosity at future LHeC.
Keywords/Search Tags:BSM, LHeC, gauge invariance, W boson polarization, ?~2 method
PDF Full Text Request
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