Determining the neutrino mass with cyclotron radiation emission spectroscopy-Project 8

By A. A. Esfahani, D. Asner, S. Böser, R. Cervantes, C. Claessens, L. D. Viveiros, P. Doe, S. Doeleman, J. Fernandes, M. Fertl and 34 more. 2017

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The most sensitive direct method to establish the absolute neutrino mass is observation of the endpoint of the tritium beta-decay spectrum. Cyclotron radiation emission spectroscopy (CRES) is a precision spectrographic technique that can probe much of the unexplored neutrino mass range with ${ \mathcal O }(\mathrm{eV})$ resolution. A lower bound of $m({\nu }_{e})\gtrsim 9(0.1)\,\mathrm{meV}$ is set by observations of neutrino oscillations, while the KATRIN experiment—the current-generation tritium beta-decay experiment that is based on magnetic adiabatic collimation with an electrostatic (MAC-E) filter—will achieve a sensitivity of $m({\nu }_{e})\lesssim 0.2\,\mathrm{eV}$. The CRES technique aims to avoid the difficulties in scaling up a MAC-E filter-based experiment to achieve a lower mass sensitivity. In this paper we review the current status of the CRES technique and describe Project 8, a phased absolute neutrino mass experiment that has the potential to reach sensitivities down to $m({\nu }_{e})\lesssim 40\,\mathrm{meV}$ using an atomic tritium source.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/1947791407fa69ba2bdaa339ffb7fddcc509ee15

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In Nuclear and High Energy Physics

Citations in the corpus

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