Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 21: Neutrinophysik (Theorie) I

T 21.4: Vortrag

Montag, 15. März 2010, 17:30–17:45, HG XV

Prospects for detection of relic neutrinos with KATRIN-like experiments — Steen Hannestad² and •Anna Sejersen Riis^1,2 — ¹Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Germany — ²Department of Physics and Astronomy, Aarhus University, Denmark

In principle the KATRIN experiment can be used to detect the relic neutrino background through neutrino capture on the Tritium molecules of the KATRIN source.

In a scenario with one standard active neutrino species and one massive sterile species we first calculate the KATRIN sensitivity to both neutrino masses using the Marcov Chain Monte Carlo methods of COSMOMC. This is performed for a large range of mass differences and mixing angles.

We then enhance the KATRIN energy resolution, background and electron count rate near the beta spectrum end point in order to put some bounds on the experimental parameters needed to detect a relic neutrino with a given mass and mixing angle in our scenario

This work is supported by BMBF under contract number 05A08PM1.