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Events on Tuesday, April 25th, 2017

Chaos & Complex Systems Seminar
Scenarios, simulations, and sustainability science: Planning for the future of complex systems
Time: 12:05 pm - 1:00 pm
Place: 4274 Chamberlin (refreshments will be served)
Speaker: Chris Kucharik, UW Nelson Institute
Abstract: Cleaning up the Yahara lakes is difficult because they are part of a complex system, where the needs of humans and ecosystems compete and long-term challenges, such as climate change and land use planning have many possible consequences and solutions. How can we better prepare for the future given this complexity and uncertainty? We can start with scenarios, or provocative and plausible stories that guide numerical simulations of the future. Together, these tools can help us understand how our decision-making today could impact our lakes and landscapes in the future. This presentation will cover the process and new model results that are a part of Yahara 2070, a set of scenarios created for the Yahara River watershed by the Water Sustainability and Climate Project at UW-Madison.
Host: Clint Sprott
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Theory Seminar (High Energy/Cosmology)
what can we learn from the current Higgs data?
Time: 3:30 pm
Place: 5280 Chamberlin
Speaker: Peisi Huang, Texas A&M
Abstract: I am going to use the tth excess as an example to discuss the possibilities for new physics as indicated from the current Higgs data. I am going to review the excess in the tth channel, and discuss two possible interpretations.The first one is that the tth coupling is SM-like, the signal is due to stop pair production. The second one is the tth coupling is enhanced, and the enhanced gluon fusion is canceled by the presence of light stops. Then I am going to discuss the implications of a modified tth coupling, light stops, and a modified Higgs trilinear coupling to double Higgs production.
Presentation: Huang_tth.pdf
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