Connecting campuses to promote excellence in math and science


Tonnis ter Veldhuis

Macalester College
Physics & Astronomy
Beyond the Standard Model
The Standard Model of elementary particles correctly describes the interactions of particles as observed in accelerator experiments. Yet many theoretical physicists think it is not the end of the story. In this colloquium I will review the reasons why the Standard Model is believed to be an effective theory only, and I will describe some current ideas that go beyond the Standard Model, such as the possible existence of extra dimension, supersymmetric extensions, grand unified theories, and dark matter. In addition, I will explain how the Large Hadron Collider (LHC), currently under construction at the European Laboratory for Nuclear Physics (CERN) in Geneva and scheduled to start test runs this Fall, will help to test some of these ideas. I will report on my own contributions in these areas, and I will relate how undergraduate students at Macalester College are involved in my research program.
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