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This Week at Physics

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Events During the Week of September 28th through October 5th, 2014

Monday, September 29th, 2014

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:
    http://cmb.physics.wisc.edu/journal/index.html
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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Council Meeting
Time: 4:00 pm
Place: 2314 Chamberlin (Chair's Conference Room)
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Tuesday, September 30th, 2014

Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 3:00 pm
Place: 5280 Chamberlin Hall
Speaker: Claudia Frugiuele
Host: Ran Lu
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Wednesday, October 1st, 2014

Department Meeting
Time: 12:15 pm
Place: 5310 Chamberlin Hall
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Thursday, October 2nd, 2014

R. G. Herb Condensed Matter Seminar
TBD
Time: 10:00 am
Place: 5310 Chamberlin Hall
Speaker: Christian Ast, Max Planck Institute for Solid State Research
Abstract: TBD
Host: Franz Himpsel
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Astrophysical neutrinos, PeV events at IceCube, and the Direct Detection of Dark Matter
Time: 2:30 pm
Place: 5280 Chamberlin
Speaker: Raj Gandhi, HRI, India and Fermi National Accelerator Laboratory
Abstract: Given present day constraints, dark matter (DM) may not comprise of thermal weakly interacting massive particles (WIMPS). If dark matter dominantly comprises of a massive, non-thermal relic φ (mass mφ), which decays preferentially (with a very long-lifetime) to another, significantly lighter DM particle χ, a small non-thermal but highly energetic population of DM may be created around energies E = mφ/2. If χ interacts with nucleons, it is possible that its cross-section, like the neutrino-nucleus coherent cross-section, may be undetectably small at low energies but may rise sharply with energy leading to deep inelastic scattering not dissimilar to neutral current neutrino- nucleon interactions. Thus, its direct detection may be possible via cascades in very large neutrino detectors. IceCube (IC) has recently reported three ultra-high energy PeV cascade events clustered around 1 − 2 PeV. We apply this notion to these events and discuss the features which may help discriminate this scenario from one in which only astrophysical neutrinos constitute the IC event sample.
Host: Barger
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Friday, October 3rd, 2014

Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 11:30 am
Place: 5280 Chamberlin
Speaker: Samir Mathur, Ohio State
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Physics Department Colloquium
TBD
Time: 3:30 pm
Place: 2241 Chamberlin Hall (coffee at 4:30 pm)
Speaker: Samir Mathur, The Ohio State University
Abstract: TBD
Host: Hashimoto
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