PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T04: Neutrino Physics
The Electron Capture in $^{163}$Ho experiment - ECHo
N. Kovac*, L. Gastaldo, F. Ahrens, A. Barth, E. Bruer, C. Enss, A. Fleischmann, M. Griedel, R. Hammann, D. Hengstler, M. Herbst, W. Holzmann, F. Mantegazzini, D. Richter, A. Reifenberger, C. Velte, T. Wieckenhäuser, M. Brass, M. Haverkort, K. Blaum, S.M. Eliseev, M. Door, P. Filianin, K. Kromer, R. Schüssler, C. Schweiger, Y. Novikov, S. Kempf, M. Wegner, J. Jochum, A. Göggelmann, C. Düllmann, H. Dorrer, T. Kieck, N. Kneip, K. Wendt, K. Johnston, B. Marsh, S. Rothe, T. Stora, U. Köster, N. Karcher, O. Sander and M. Weberet al. (click to show)
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Abstract
The definition of the absolute neutrino mass scale is one of the main goals of the Particle Physics today.
The study of the end-point regions of the $\beta$- and electron capture (EC) spectrum offers a possibility to determine the effective electron (anti-)neutrino mass in a completely model independent way, as it only relies on the energy and momentum conservation.
The ECHo (Electron Capture in $^{163}$Ho) experiment has been designed in the attempt to measure the effective mass of the electron neutrino by performing high statistics and high energy resolution measurements of the $^{163}$Ho electron capture spectrum. To achieve this goal, large arrays of low temperature metallic magnetic calorimeters (MMCs) implanted with with $^{163}$Ho are used.
Here we report on the structure and the status of the experiment.
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