Colloquium Hans Dijkstra (CERN)

24 januari 2014

Friday 24 January, 11:00h, at Nikhef in H331

Speaker: Hans Dijkstra (CERN)

Title: "Search for Heavy Neutral Leptons at the SPS"

Abstract:
A new fixed-target experiment at the CERN SPS accelerator is proposed that will use decays of charm mesons to search for Heavy Neutral Leptons (HNLs), which are righthanded partners of the Standard Model neutrinos. The existence of such particles is strongly motivated by theory, as they can simultaneously explain the baryon asymmetry of the Universe, account for the pattern of neutrino masses and oscillations and provide a Dark Matter candidate. The experiment will be motivated, and previous searches will be reviewed. The experiment requires a 400 GeV proton beam from the SPS with a total of 2×10^20 protons on target. The proposed detector will reconstruct exclusive HNL decays and measure the HNL mass. The discovery of a HNL would have a great impact on our understanding of nature and open a new area for future research. In addition the experiment could accomodate a nu-tau detector, which could increase the statistics of nu-tau interactions by more than two orders of magnitude.

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