Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

Towards the neutrino mass with Cyclotron Radiation Emission Spectroscopy: Project 8

Prof. Dr. Sebastian Böser , Johannes Gutenberg-Universität Mainz

While the mass differences of the eigenstates of the neutrino are measured at a precision of a few percent, the absolute scale of the masses, i.e. the value of the lightest mass state, is not yet known. Cosmology provides stringent upper bounds, but relies on a series of complex models to do so. In contrast, end-point spectroscopy of tritium beta-decay solely relies on the event kinematics. The most stringent limits from lab measurements are currently provided by the KATRIN experiment. Amongst other effect, this sensitivity is limited by molecular excitations which broaden the energy resolution. Project 8 aims to address this problem using the novel method of Cyclotron Radiation Emission Spectroscopy in combination with a source of atomic tritium. In this talk I will show current results from the PhaseII prototype as well as first progress towards scaling the technology to its final sensitivity level.

Gentner Colloquium for Astroparticle Physics
31 Jan 2024, 11:15
Max-Planck-Institut für Kernphysik, Central Seminar Room, Library Building

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