1. October 2011 David Toback, Texas A&M University Research Topics Seminar 1 David Toback Texas A&M University Research Topics Seminar September 2013 Cosmology, Particle Physics and Dark Matter

2. Outline Cosmology and Particle Physics –Dark Matter –Evolution of the Universe –Discovery Can we discover Dark Matter as a way of learning about our Universe? September 2013 David Toback, Texas A&M University Research Topics Seminar 2

3. Dark Matter September 2012 David Toback, Texas A&M University Research Topics Seminar 3 What is some of the evidence for Dark matter?

4. September 2013 David Toback, Texas A&M University Research Topics Seminar 4 As the Solar System Turns Gravity and General Relativity http://faculty.physics.tamu.edu/toback/Talks/Video/Lab4_SS1_video.swf

5. September 2012 David Toback, Texas A&M University Research Topics Seminar 5 Is that what our galaxy, the Milky Way, looks like? Do the stars orbit like the planets in our solar system? Outer stars go around much more slowly?

6. As the Galaxy Turns http://faculty.physics.tamu.edu/toback/Talks/Video/Lab4_GX1_video_slow.swf September 2013 David Toback, Texas A&M University Research Topics Seminar 6

7. September 2012 David Toback, Texas A&M University Research Topics Seminar 7 Lots of Dark Matter out there! What’s the Matter in the Universe? No clue what this stuff is…

8. September 2012 David Toback, Texas A&M University Research Topics Seminar 8 The Known Particles –No known particles have the properties of Dark Matter –Other credible reasons to believe there are new fundamental particles to be discovered –Maybe Dark Matter is a New Particle!

9. October 2011 David Toback, Texas A&M University Research Topics Seminar 9 Hypothesis:The Dark Matter in the Universe is made up of LOTS of particles that we haven’t discovered yet! Best Guess: Got created in the Early Universe like everything else and is still here today! Big Bang! Then Universe gets bigger Dark Matter = New Particle? High energy collisions between particles in the early Universe If they created Dark Matter, maybe we can watch it interact in an experiment with SM matter now! Make a Hypothesis based on Astronomy, Cosmology and Particle Physics

10. Particle Physics Experiments September 2013 David Toback, Texas A&M University Research Topics Seminar 10 Does LHC have enough energy to make new dark matter particles? Do dark matter particles interact with real matter so we can see them in experiments on earth? Do they annihilate and produce high energy particles we can see in other experiments? CDMS Experiment Best bet for discovery!