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The Standard Model
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Particle Physics

Introduction of The Standard Model
Problems of the theory
Test to find deviations to the theory
Results

The Fundamental Particles
:: Quarks
-Fractional Charge
-Color Charge
-Hadrons
:Baryons (qqq)

:Mesons (qq)

 

lLeptons
-Pointlike
-Neutrinos
::No Electric Charge
-Electron, Muon, Tau
::Electric charge

::Flavor Conservation

 

:l:Gauge Bosons
Electromagnetic
Strong
Weak
Gravity

Limitations of the Standard Model
::Arbitrary Parameters
-Unexplained Masses
-Only 3 Generations?
::Where is Antimatter?
lGravity

DØ Detector Data
::Proton and Antiproton beams collide
::Particle decay from this collision is measured by detector.
::Missing Energy
-Neutrinos
-Must Calibrate!
::Normalization
-Reference Decays
-Smearing

The SLEUTH Algorithm
::Model Independence
::Background
-Transverse Momenta
-Data Excesses
-Background Noise

The Experiment
::Monte Carlo Challenge
- PYTHIA
-Ideal Conditions
-DØ Detector
::Actual Data from DØ Detector

The Results
::The DØ data, when ran through the SLEUTH algorithm, found no deviations from the Standard Model
::This is by no means conclusive evidence to prove the Standard Model

 

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