Present State of the Standard Model

Initial Questions

• What leads us to believe that the Standard Model particles only account for 5% of the Universe?
  • Science Daily article
  • Brahmand News
  • PhysicsCentral - Dark Matter ****
  • Wikipedia - Big Bang ****
  • Oxford Physics

• What are the shortcomings of the Standard Model?
  • New particles necessary to accomodate neutrino masses *****
  • Open Questions
  • Symmetry Groups, Unification, and Model Building
  • PhysicsCentral - (Anti)Neutrino Disappearance
  • Quora - SM Alternatives
  • Wikipedia - Physics Beyond the SM - Problems with the Standard Model

• How do we know that neutrinos are not dark?
  • Physics for the 21st Century
  • Neutrino History
  • Open Questions - Neutrinos
  • Open Questions - Neutrino Physics
  • Wikipedia - Neutrino

• Where do we think the antimatter is?
  • Quantum Universe
  • CERN Antimatter
  • Physics for the 21st Century
  • SLAC - CP Violation
  • Fermilab - Antimatter and Virtual Photons

• What facts and theories go beyond the Standard Model?
  • Tevatron finding - new elementary particle
  • Tachyons
  • Fermilab - Consequences of Superstring Theory
  • Fermilab - The Future of Physics
  • Pulse - Accelerator Science in Medicine
  • Beyond the Standard Model

• What current research is occurring to support Standard Model theory?
  • Higgs boson search
  • Fermilab - What to Expect in the Future
  • Fermilab - Particle Model
  • PhysicsCentral - Mini-BooNE
  • Looking Inside the Standard Model

• How does the Standard Model accomodate gravity?
  • Gravity at Microscopic Scales
  • Fermilab - Gravitons
  • Fermilab - Higgs Particle/Graviton Connection
  • Wikipedia - Physics Beyond the SM - String Theory
  • Strings, Gauge Theory and Gravity

• What is quantum gravity?
  • Physics for the 21st Century
  • SLAC - Gravitational Interactions
  • Cambridge Relativity - Quantum Gravity
  • Open Questions - Quantum Gravity
  • Wikipedia - Quantum Gravity

• What is symmetry?
  • Quantum Universe
  • Wikipedia - Symmetry (physics)
  • PNAS - The role of symmetry in fundamental physics
  • Stanford - Symmetry and Symmetry Breaking
  • Wikipedia - Intro to gauge theory
  • Gauge Symmetry in Phase Space, Consequences for Physics and Spacetime

Images

• Matter/Antimatter
• Matter/Dark pie chart
• Standard Model Chart
• Forces Summary
• Dark/Atom pie chart
• SM Interactions