David Toback Texas A&M University Research Topics Seminar September 2013
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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
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Cosmology, Particle Physics and Dark Matter. David Toback Texas A&M University Research Topics Seminar September 2013. 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?. - PowerPoint PPT Presentation
Transcript of David Toback Texas A&M University Research Topics Seminar September 2013
October 2011 David Toback, Texas A&M UniversityResearch Topics Seminar 1
David TobackTexas A&M UniversityResearch Topics Seminar
September 2013
Cosmology, Particle Physics and Dark Matter
Outline• Cosmology and Particle Physics–Dark Matter–Evolution of the Universe
–DiscoveryCan we discover Dark Matter as a way of learning about our Universe?
September 2013
David Toback, Texas A&M UniversityResearch Topics Seminar 2
Dark Matter
September 2012
David Toback, Texas A&M UniversityResearch Topics Seminar 3
What is some of
the evidenc
e for Dark
matter?
September 2013
David Toback, Texas A&M UniversityResearch Topics Seminar 4
As the Solar System Turns
Gravity and General Relativity
http://faculty.physics.tamu.edu/toback/Talks/Video/Lab4_SS1_video.swf
September 2012
David Toback, Texas A&M UniversityResearch 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?
As the Galaxy Turns
http://faculty.physics.tamu.edu/toback/Talks/Video/Lab4_GX1_video_slow.swf
September 2013
David Toback, Texas A&M UniversityResearch Topics Seminar 6
September 2012
David Toback, Texas A&M UniversityResearch Topics Seminar 7
Lots of Dark Matter out there!
What’s the Matter in the
Universe?
No clue what this stuff is…
September 2012
David Toback, Texas A&M UniversityResearch 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!
October 2011 David Toback, Texas A&M UniversityResearch 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
Particle Physics Experiments
September 2013
David Toback, Texas A&M UniversityResearch 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!
