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This Week at Physics

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Events on Friday, March 27th, 2015

Cosmology Journal Club
An Informal discussion about a broad variety of arXiv papers related to Cosmology
Time: 12:15 pm
Place: 5242 Chamberlin Hall
Abstract: Please visit the following link for more details:
Please feel free to bring your lunch!
If you have questions or comments about this journal club, would like to propose a topic or volunteer to introduce a paper, please email Le Zhang (lzhang263@wisc.edu)
Host: Peter Timbie
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Physics Department Colloquium
The present and future of solar neutrinos with Borexino
Time: 3:30 pm
Place: 2241 Chamberlin Hall (coffee at 4:30 pm)
Speaker: Andrea Pocar, University of Massachusetts, Amherst
Abstract: Borexino is a large, low-energy neutrino experiment that has been running since 2007 at the Gran Sasso underground laboratory in Italy. It is the only running detector potentially sensitive to the entire solar neutrino spectrum. It has so far made the first measurement of the Berillium-7 neutrinos, now known with 5% precision, measured the Boron-8 neutrinos with lower energy threshold than previous experiments, and observed pep neutrinos for the first time. More recently, Borexino made the first direct detection of pp neutrinos. These are the most abundant solar neutrinos, yet they have proven very hard to detect due to their low energy and the presence of the Carbon-14 background in organic scintillator. These results will be described in detail, in the context of neutrino and solar physics. The Borexino program for the coming years will also be presented, with particular focus on the hunt for CNO solar neutrinos.
Host: Justin Vandenbroucke
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