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Event Number 3149

  Friday, October 25th, 2013

Theory Seminar (High Energy/Cosmology)
Search for signatures of dark matter induced nucleon decay
Time: 2:00 pm
Place: 5280 Chamberlin Hall
Speaker: Yue Zhao, Stanford University
Abstract: If dark matter (DM) carries baryon and/or lepton number, a DM particle may annihilate with a nucleon by flipping to anti-DM. We introduce a model where DM is asymmetric and carries B and L as -1/2. It can annihilate with a nucleon to meson, lepton and anti-DM. Such signal may be observed in proton decay experiments, similar signal has been studied in detail in arXiv:1008.2399, though in a different channel. If DM is captured in the Sun, the DM induced nucleon decay could generate a large flux of neutrinos, which could be observed in neutrino experiments. Furthermore, the anti-DM particle in the final state obtains a relatively large momentum (few hundred MeV), and escape the Sun. These fast anti-DM particles could also induce interesting signals in various ground experiments.
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