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Introduction to QCD slides - P.Hoyer.pdf - High Energy Physics Group

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As simple as 1-2-3?<br />

Paul <strong>Hoyer</strong> Mugla 2010<br />

The Standard Model<br />

SU(3) x SU(2)L x U(1)<br />

<strong>QCD</strong><br />

Electroweak<br />

Not exactly: The strong, electromagnetic and weak interactions<br />

manifest themselves very differently in Nature<br />

SU(2)L x U(1): Where does the lagrangian come from?<br />

SU(3): What does the lagrangian do?<br />

2

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