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1.
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The Electron Capture in $^{163}$Ho Experiment - a Short Update
/ Kovac, Neven (Kirchhoff Inst. Phys.) ; Ahrens, Felix (Kirchhoff Inst. Phys.) ; Barth, Arnulf (Kirchhoff Inst. Phys.) ; Berndt, Sebastian (Mainz U. ; Mainz U., Inst. Phys.) ; Blaum, Klaus (Heidelberg, Max Planck Inst.) ; Brass, Martin (U. Heidelberg, ITP) ; Bruer, Erik (Kirchhoff Inst. Phys.) ; Door, Menno (Heidelberg, Max Planck Inst.) ; Dorrer, Holger (Mainz U.) ; Düllmann, Christoph (Mainz U.) et al.
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. [...]
2022 - 4 p.
- Published in : PoS EPS-HEP2021 (2022) 211
Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.211
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2.
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High-resolution and low-background $^{163}$Ho spectrum: interpretation of the resonance tails
/ Velte, C (Kirchhoff Inst. Phys.) ; Ahrens, F (Kirchhoff Inst. Phys.) ; Barth, A (Kirchhoff Inst. Phys.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Braß, M (U. Heidelberg, ITP) ; Door, M (Heidelberg, Max Planck Inst.) ; Dorrer, H (Mainz U., Inst. Kernphys.) ; Düllmann, Ch E (Mainz U., Inst. Kernphys. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Eliseev, S (Heidelberg, Max Planck Inst.) ; Enss, C (Kirchhoff Inst. Phys.) et al.
The determination of the effective electron neutrino mass via kinematic analysis of beta and electron capture spectra is considered to be model-independent since it relies on energy and momentum conservation. At the same time the precise description of the expected spectrum goes beyond the simple phase space term. [...]
2019 - 8 p.
- Published in : Eur. Phys. J. C 79 (2019) 1026
External link: Fulltext
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3.
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Experiment IS586 Embedding of $^{163}$Ho and $^{166m}$Ho in the energy absorbers of low temperature metallic magnetic calorimeters
/ Gastaldo, Loredana (Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany) ; Düllman, Christoph (Institute for Nuclear Chemistry, Johannes Gutenberg University, D-55128, Mainz, Germany, GSI Helmholtzzentrum für Schwerionenforschung, D-64291, Darmstadt, Germany, Helmholtz Institute Mainz, Johann-Joachim-Becherweg 36, 55128 Mainz, Germany) ; Eberhardt, Klaus (Institute for Nuclear Chemistry, Johannes Gutenberg University, D-55128, Mainz, Germany, Helmholtz Institute Mainz, Johann-Joachim-Becherweg 36, 55128 Mainz, Germany) ; Enss, Christian (Kirchhoff Institute for Physics, Heidelberg University, D-69120 Heidelberg, Germany)
CERN-INTC-2019-009 ; INTC-SR-068.
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2019.
Fulltext
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4.
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Production, isolation and characterization of radiochemically pure 163Ho samples for the ECHo-project
/ Dorrer, Holger (Mainz U. ; Bern U. ; PSI, Villigen) ; Chrysalidis, Katerina (Mainz U.) ; Goodacre, Thomas Day (CERN ; Manchester U.) ; Düllmann, Christoph E (Mainz U. ; Darmstadt, GS) ; Eberhardt, Klaus (Mainz U.) ; Enss, Christian (Heidelberg U.) ; Gastaldo, Loredana (Heidelberg U.) ; Haas, Raphael (Mainz U.) ; Harding, Jonathan (Mainz U. ; Cardiff U.) ; Hassel, Clemens (Heidelberg U.) et al.
Several experiments on the study of the electron neutrino mass are based on high-statistics measurements of the energy spectrum following electron capture of the radionuclide $^{163}$Ho. They rely on the availability of large, radiochemically pure samples of $^{163}$Ho. [...]
2018 - 13 p.
- Published in : Radiochim. Acta 106 (2018) 535-547
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5.
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Characterization of the Ho163 Electron Capture Spectrum: A Step Towards the Electron Neutrino Mass Determination
/ Ranitzsch, P C -O (Kirchhoff Inst. Phys.) ; Hassel, C (Kirchhoff Inst. Phys.) ; Wegner, M (Kirchhoff Inst. Phys.) ; Hengstler, D (Kirchhoff Inst. Phys.) ; Kempf, S (Kirchhoff Inst. Phys.) ; Fleischmann, A (Kirchhoff Inst. Phys.) ; Enss, C (Kirchhoff Inst. Phys.) ; Gastaldo, L (Kirchhoff Inst. Phys.) ; Herlert, A (CERN) ; Johnston, K (CERN)
The isotope
163
Ho
is in many ways the best candidate to perform experiments to investigate the value of the electron neutrino mass. It undergoes an electron capture process to
163
Dy
with an energy available to the decay,
Q
EC
, of about 2.8 keV. [...]
2017
- Published in : Phys. Rev. Lett. 119 (2017) 122501
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6.
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The electron capture in $^{163}$Ho experiment – ECHo
/ Gastaldo, L (Kirchhoff Inst. Phys.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Chrysalidis, K (Mainz U., Inst. Phys.) ; Day Goodacre, T (CERN) ; Domula, A (Dresden, Tech. U.) ; Door, M (Heidelberg, Max Planck Inst.) ; Dorrer, H (Mainz U., Inst. Kernphys. ; PSI, Villigen ; Bern U.) ; Düllmann, Ch E (Mainz U., Inst. Kernphys. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Eberhardt, K (Mainz U., Inst. Kernphys. ; Helmholtz Inst., Mainz) ; Eliseev, S (Heidelberg, Max Planck Inst.) et al.
Neutrinos, and in particular their tiny but non-vanishing masses, can be considered one of the doors towards physics beyond the Standard Model. Precision measurements of the kinematics of weak interactions, in particular of the$^{3}$H β-decay and the$^{163}$Ho electron capture (EC), represent the only model independent approach to determine the absolute scale of neutrino masses. [...]
2017 - 72 p.
- Published in : Eur. Phys. J. Spec. Top. 226 (2017) 1623-1694
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7.
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Recent Results for the ECHo Experiment
/ Hassel, C (Kirchhoff Inst. Phys.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Goodacre, T Day (CERN) ; Dorrer, H (Mainz U., Inst. Kernphys.) ; Düllmann, Ch E (Mainz U., Inst. Kernphys.) ; Eberhardt, K (Mainz U., Inst. Kernphys.) ; Eliseev, S (Heidelberg, Max Planck Inst.) ; Enss, C (Kirchhoff Inst. Phys.) ; Filianin, P (Heidelberg, Max Planck Inst.) ; Fäßler, A (Tubingen U.) et al.
The Electron Capture in$^{163}$ Ho experiment, ECHo, is designed to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured spectrum following the electron capture (EC) in$^{163}$ Ho. Arrays of low-temperature metallic magnetic calorimeters (MMCs), read-out by microwave SQUID multiplexing, will be used in this experiment. [...]
2016 - 12 p.
- Published in : J. Low Temp. Phys. 184 (2016) 910-921
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8.
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A White Paper on keV Sterile Neutrino Dark Matter
/ Drewes, M. (Munich, Tech. U.) ; Lasserre, T. (Munich, Tech. U.) ; Merle, A. (Munich, Max Planck Inst.) ; Mertens, S. (LBL, Berkeley ; KIT, Karlsruhe) ; Adhikari, R. (Jamia Millia Islamia) ; Agostini, M. (Gran Sasso) ; Ky, N.Anh (Hanoi, Inst. Phys. ; Vietnam Natl. U.) ; Araki, T. (Saitama U.) ; Archidiacono, M. (Aarhus U.) ; Bahr, M. (UC, Santa Barbara) et al.
We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, and particle physics - in each case viewed from both theoretical and experimental/observational perspectives. After reviewing the role of active neutrinos in particle physics, astrophysics, and cosmology, we focus on sterile neutrinos in the context of the Dark Matter puzzle. [...]
arXiv:1602.04816; FERMILAB-PUB-16-068-T.-
2017-01-13 - 239 p.
- Published in : JCAP 01 (2017) 025
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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9.
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Technical Design Report for the AMoRE $0\nu\beta\beta$ Decay Search Experiment
/ Alenkov, V ; Aryal, P ; Beyer, J ; Boiko, R S ; Boonin, K ; Buzanov, O ; Chanthima, N ; Chernyak, M K Cheoun D M ; Choi, J ; Choi, S et al.
The AMoRE (Advanced Mo-based Rare process Experiment) project is a series of experiments that use advanced cryogenic techniques to search for the neutrinoless double-beta decay of \mohundred. [...]
arXiv:1512.05957.
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2015. - 93 p.
Preprint
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10.
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First Calorimetric Measurement of OI-line in the Electron Capture Spectrum of $^{163}$Ho
/ Ranitzsch, P. C. -O. (Kirchhoff Inst. Phys.) ; Hassel, C. (Kirchhoff Inst. Phys.) ; Wegner, M. (Kirchhoff Inst. Phys.) ; Kempf, S. (Kirchhoff Inst. Phys.) ; Fleischmann, A. (Kirchhoff Inst. Phys.) ; Enss, C. (Kirchhoff Inst. Phys.) ; Gastaldo, L. (Kirchhoff Inst. Phys.) ; Herlert, A. (CERN) ; Johnston, K. (CERN)
The isotope $^{163}$Ho undergoes an electron capture process with a recommended value for the energy available to the decay, $Q_{\rm EC}$, of about 2.5 keV. [...]
arXiv:1409.0071.
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2014. - 5 p.
Preprint - Full text
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