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Nuclear and Particle Physics Colloquia

Mondays ~ Refreshments 3:30pm Talk: 4:00pm ~ Kolker Room, 26-414

 

Committee:
William Detmold, Chair ~ Mike Williams ~ Lindley Winslow

 

Colloquia Archives

 

February 8, 2016

hosted by: Janet Conrad

Philip Coleman Harris, (CERN)

Colliding Into the Galaxy

With an upgraded energy and calibrated detectors, the next few years are pivotal for new physics searches at the Large Hadron Collider (LHC). Developments over the past year have demonstrated the power of the LHC to compliment and, in some cases, extend direct detection and galactic searches for dark matter. We present a new search for dark matter that represents the culmination of these developments, which is now the established archetype for dark matter searches in future LHC runs. In addition to an order of magnitude improvement in sensitivity, we demonstrate strong exclusion of the galactic center gamma ray excess, and stronger bounds relative to spin-dependent dark matter searches. The search incorporates new approaches in jet substructure as well as state of the art QCD calculations. In its wake, we have performed some of the most pre-cise measurements of QCD to date. Finally, we explore the future of dark matter searches and ask the question: can we make a definitive path to dark matter discovery?

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



February 16, 2016

hosted by:  n/a



  No Colloquium

Presidents' Day observed

 



February 22, 2016

hosted by:  Bolek Wyslouch



 David Moore, (Stanford University)

Searching for the "Dark" Components of the Universe

Astrophysical observations indicate that the vast majority of the energy density of the universe consists of dark matter and dark energy, whose fundamental nature is poorly understood. Understanding these “dark” components of the universe is a key goal of physics in the coming years, with significant implications for our understanding of cosmology and particle physics.  

I will discuss the development of two technologies that can enable novel terrestrial searches for models of dark matter and dark energy. First, I will discuss the Cryogenic Dark Matter Search (SuperCDMS), which will search for Weakly Interacting Massive Particles (WIMPs) with masses below 10 GeV with unprecedented sensitivity. If WIMPs are detected by SuperCDMS, larger detectors will be needed to measure their detailed properties. I will describe the development of cryogenic calorimeters using Microwave Kinetic Inductance Detectors (MKIDs), which may provide an easier path to the large target masses needed in these next-generation searches.  Second, I will discuss the development of sub-attonewton force sensors based on optically levitated microspheres in vacuum. This technique can enable extremely sensitive searches for new forces at micron length scales, probing previously unexplored parameter space in models that could explain the nature of dark matter, dark energy, or the microscopic properties of gravity.  In both cases, I will describe recent results from existing experiments utilizing these techniques and prospects for next-generation searches for new physics.

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



February 29, 2016

hosted by: Richard Milner



Heather Gray, (CERN)

 

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



March 7, 2016


hosted by:TBA



TBA

 

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



March 14, 2016

hosted by:TBA



TBA

 

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



March 21, 2016

hosted by: TBA



TBA

TBA

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



March 28, 2016

hosted by:TBA



TBA

TBA

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



April 4, 2016

hosted by: TBA



TBA

 

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



April 11, 2016

hosted by: TBA



TBA

TBA

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



April 18, 2016

 


No Colloquium

Patriots' Day observed



April 25, 2016

hosted by: TBA



TBA

TBA

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)



May 2, 2016

hosted by: TBA



TBA

TBA

 

 

time:    4:00 p.m.
place:   Kolker Room (26-414)

(refreshments at 3:30 p.m.)