Events at Physics |
Events on Friday, October 3rd, 2008
- Theory/Phenomenology Seminar
- The Simplicity of Scattering Amplitudes
- Time: 1:30 pm
- Place: 5280 Chamberlin Hall
- Speaker: Ruth Britto, Fermilab
- Host: Frank Petriello
- Physics Department Colloquium
- Cosmic Rays
- Time: 4:00 pm
- Place: 2241 Chamberlin Hall (coffee at 3:30 pm)
- Speaker: Pierre Sokolsky, University of Utah
- Abstract: The fourty year search for the end of the cosmic ray spectrum, the so-called Greisen-Zatsepin-Kuzmin (GZK) Cutoff is described. This is the result of the inelastic interactions between ultra-high energy cosmic rays and the remnant universal black-body radiation. The first definitive observation of this effect has recently been published by the High Resolution Fly's Eye Experiment. This result and confirming evidence from the Pierre Auger Experiment will also be presented and discussed. Results on the ultra-high energy composition and anisotropy will also be presented as well as a discussion of the new Telescope Array project.
- Host: Halzen
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