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Electroweak Unification

This project explores the unification of electromagnetic and weak forces, referred to as electroweak unification, through data collected from hadron-lepton collisions. The research includes understanding the necessary theoretical framework, analyzing deep inelastic scattering events, and presenting results from the ZEUS detector. Key elements include the classification of neutral and charged current events, data thresholds, and background event types. Visual representations of findings will be presented via an online platform to aid collaboration and dissemination of knowledge.

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Electroweak Unification

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  1. Electroweak Unification By Mark Hilton, Yee-Ting Li, John Loizides, Jayesh Ramanlal, Mo Man Yue, Khadija Muhiddin

  2. Introduction • Outline of Project • Understanding of Theory • Analysis of Data • Event Display • Webpage

  3. HERA • Hadron-Lepton Accelerator • ZEUS Detector • Use of ZEUS in our Project

  4. Deep Inelastic Scattering • Introduction • Neutral and Charged Current Events

  5. Neutral Current Events

  6. Charged Current Events

  7. Background Events 1 • Introduction • Types • P-gas • Photo-production • Muon • Fake Electrons

  8. Background Events 2 • Photo-production • P-Gas

  9. Background Events 3 • Muon • Fake Electrons

  10. Thresholds Neutral Current Events Charged Current Events • E’e >25GeV • Missing transverse momentum < 2 Et • 38GeV<  <65GeV • -50cm < Zvtx < 50cm • Xvtx + Yvtx < 8.5cm • ye <0.95 • 0.7 < Q2e /Q2DA <1.2 • Q2DA >400GeV • Number of muon tracks < 3 • Missing transverse momentum > 12GeV • Missing transverse momentum > 2 Et •  <38GeV • -50cm < Zvtx < 50cm • X vtx + Yvtx < 8.5cm • Q2JB >400GeV • Number of muon tracks < 3

  11. Electroweak Unification 1 • Introduction • Differential Cross Sections (DCS)

  12. Electroweak Unification 2 • Detection of NC/CC Events • Collisions of lepton-protons • All variables stored in ‘ntuple’ • Thresholds • Relation of Events with Differential Cross Section

  13. Electroweak Unification 3 • Project Results

  14. Event Display • Introduction • Graphical interpretation of collision • Aid to collaboration

  15. Webpage • Audience • History of the Web - CERN • Public Project Website (www.vhp.org.uk) • Layout • Features • Navigation • Content

  16. Summary • Achievements

  17. Questions & Comments

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