Sean Tulin

I'm a postdoc at University of Michigan. I received my Ph.D. from Caltech in 2009, and afterward I was a postdoc at TRIUMF.

Contact info:

Randall Laboratory
450 Church St.
Ann Arbor, MI 48109-1040


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Research interests:

Dark matter
Most of the matter in the Universe is completely unknown and lies beyond the scope of the standard model of particle physics. What are potential experimental signatures of dark matter, and how can these signals shed light on the dark sector?

Physics of the weak scale
With exploration of the weak scale underway at the LHC and in precision experiments at the intensity frontier, what are the implications for particle physics beyond the standard model and the cosmology of the early Universe?

What is the origin of the cosmic matter-antimatter asymmetry in the Universe? What do theories of baryogenesis predict for experimental signatures at the LHC and in precision tests of CP violation, such as electric dipole moment searches?

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My research papers: find a tulin

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Podcast: "The Higgs and other particles that matter" -- public talk/Q&A with the Ann Arbor Science & Skeptics (Jan. 19th, 2013). Many thanks to Chris Lindsay and Janice Loffreda-Wren for inviting me to speak and making my podcast available.

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I co-authored a paper with Hooman Davoudiasl, David Morrissey, and Kris Sigurdson about how dark matter and regular matter might have a common origin. Our idea is that the missing antimatter in the Universe might be hidden in the form of weakly-interacting "dark" antibaryons. These exotic particles would be the dark matter. An interesting signature of this hypothesis is that dark matter antibaryons in the local halo of the Milky Way can destroy regular matter baryons (protons and neutrons). This looks like protons and neutrons are decaying, but with a lot more energy coming out than just from their rest mass. (Don't worry, it would take at least 10^30 years for you and the Earth to be destroyed by dark matter.) You can read more about this idea here: X particle explains dark matter and antimatter at the same time X factor: new particle could solve two mysteries

New scientist: The dark side of antimatter Physicists propose mechanism that explains the origins of both dark matter and 'normal' matter

Wikipedia entry

Géraldine Servant and I proposed a separate idea for generating dark and regular matter called "Higgsogenesis." The Higgs boson, discovered at the LHC in July 2012, explains the origin of mass of elementary particles. We show that the Higgs may also play an important role in the origin of matter. You can read more about this idea here: Higgsogenesis proposed to explain dark matter. (Same article reprinted on Scientific American and the Huffington Post.)