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Electroweak Electroweak UnificationUnification
ByBy
Mark Hilton, Mark Hilton, Yee-Ting LiYee-Ting Li, John Loizides,, John Loizides,
Jayesh Ramanlal, Mo Man Yue, Khadija Jayesh Ramanlal, Mo Man Yue, Khadija MuhiddinMuhiddin
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IntroductionIntroduction
Understanding of TheoryUnderstanding of Theory Analysis of DataAnalysis of Data Event DisplayEvent Display WebpageWebpage
Outline of ProjectOutline of Project
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HERAHERA Hadron-Lepton AcceleratorHadron-Lepton Accelerator ZEUS DetectorZEUS Detector Use of ZEUS in our ProjectUse of ZEUS in our Project
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Deep Inelastic ScatteringDeep Inelastic Scattering
IntroductionIntroduction Neutral and Charged Current EventsNeutral and Charged Current Events
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Neutral Current EventsNeutral Current Events
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Charged Current EventsCharged Current Events
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Background Events 1Background Events 1
IntroductionIntroduction TypesTypes
P-gasP-gas Photo-productionPhoto-production MuonMuon Fake ElectronsFake Electrons
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Photo-productionPhoto-production
P-GasP-Gas
Background Events 2Background Events 2
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Background Events 3Background Events 3 MuonMuon
Fake ElectronsFake Electrons
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ThresholdsThresholds
E’e >25GeVE’e >25GeV Missing transverse momentum < Missing transverse momentum <
2 2 Et Et 38GeV< 38GeV< <65GeV <65GeV -50cm < Zvtx < 50cm-50cm < Zvtx < 50cm Xvtx + Yvtx < 8.5cmXvtx + Yvtx < 8.5cm ye <0.95 ye <0.95 0.7 < Q2e /Q2DA <1.20.7 < Q2e /Q2DA <1.2 Q2DA >400GeVQ2DA >400GeV Number of muon tracks < 3Number of muon tracks < 3
Neutral Current EventsNeutral Current Events Charged Current EventsCharged Current Events
• Missing transverse momentum > Missing transverse momentum > 12GeV12GeV
• MMissing transverse momentum > issing transverse momentum > 2 2 EtEt
<38GeV<38GeV
• -50cm < Zvtx < 50cm-50cm < Zvtx < 50cm
• X vtx + Yvtx < 8.5cmX vtx + Yvtx < 8.5cm
• Q2JB >400GeVQ2JB >400GeV
• Number of muon tracks < 3Number of muon tracks < 3
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Electroweak Unification 1Electroweak Unification 1
IntroductionIntroduction Differential Cross Sections (DCS)Differential Cross Sections (DCS)
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Electroweak Unification 2Electroweak Unification 2
Detection of NC/CC EventsDetection of NC/CC Events Collisions of lepton-protonsCollisions of lepton-protons All variables stored in ‘ntuple’All variables stored in ‘ntuple’ ThresholdsThresholds
Relation of Events with Differential Cross SectionRelation of Events with Differential Cross Section
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1
dQA
C
L
dN
dQ
d rad
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Electroweak Unification 3Electroweak Unification 3
Project ResultsProject Results
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Event DisplayEvent Display
IntroductionIntroduction Graphical interpretation of collisionGraphical interpretation of collision Aid to collaborationAid to collaboration
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WebpageWebpage
AudienceAudience History of the Web - CERNHistory of the Web - CERN Public Project Website (www.vhp.org.uk)Public Project Website (www.vhp.org.uk)
LayoutLayout FeaturesFeatures NavigationNavigation ContentContent
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SummarySummary
AchievementsAchievements
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Questions & Questions & CommentsComments
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