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Seminar

Evidence for a 17 MeV Boson from Rare Excited 8Be Decays? (in English)

  • SPEAKER: Prof. Tim Tait
    (University of California, Irvine)
  • DATE: Oct. 31st (Mon.) 15:00 ~
  • PLACE: Honkan Building 1F, Meeting Room 3

I will discuss the recent experimental results from the ATOMKI group which measured the spectrum ofinternal pair conversion e+e- events in the decay of an excited state of beryllium-8 to its ground state.  They observe a resonant-like structure in the invariant mass of the e+e- which is suggestiveof a new boson at 17 MeV.  I’ll review the experimental results and the types of theories whichcan describe them.