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Title: Absolute neutrino mass measurements

Abstract

The neutrino mass plays an important role in particle physics, astrophysics and cosmology. In recent years the detection of neutrino flavour oscillations proved that neutrinos carry mass. However, oscillation experiments are only sensitive to the mass-squared difference of the mass eigenvalues. In contrast to cosmological observations and neutrino-less double beta decay (0v2{beta}) searches, single {beta}-decay experiments provide a direct, model-independent way to determine the absolute neutrino mass by measuring the energy spectrum of decay electrons at the endpoint region with high accuracy.Currently the best kinematic upper limits on the neutrino mass of 2.2eV have been set by two experiments in Mainz and Troitsk, using tritium as beta emitter. The next generation tritium {beta}-experiment KATRIN is currently under construction in Karlsruhe/Germany by an international collaboration. KATRIN intends to improve the sensitivity by one order of magnitude to 0.2eV. The investigation of a second isotope ({sup 137}Rh) is being pursued by the international MARE collaboration using micro-calorimeters to measure the beta spectrum. The technology needed to reach 0.2eV sensitivity is still in the R and D phase. This paper reviews the present status of neutrino-mass measurements with cosmological data, 0v2{beta} decay and single {beta}-decay.

Authors:
 [1]
  1. Karlsruhe Institute of Technology (KIT), IEKP, Postfach 3640, 76021 Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
21611867
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1382; Journal Issue: 1; Conference: NuFact10: 12. international workshop on neutrino factories, superbeams, and betabeams, Mumbai (India), 20-25 Oct 2010; Other Information: DOI: 10.1063/1.3644268; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ASTROPHYSICS; BETA SPECTRA; COSMOLOGY; DOUBLE BETA DECAY; EIGENVALUES; ELECTRONS; ENERGY SPECTRA; FLAVOR MODEL; MASS DIFFERENCE; NEUTRINO DETECTION; NEUTRINOS; REVIEWS; SENSITIVITY; TRITIUM; BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY; BETA-MINUS DECAY RADIOISOTOPES; COMPOSITE MODELS; DECAY; DETECTION; DOCUMENT TYPES; ELEMENTARY PARTICLES; FERMIONS; HYDROGEN ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUCLEAR DECAY; NUCLEI; ODD-EVEN NUCLEI; PARTICLE MODELS; PARTICLE PROPERTIES; PHYSICS; QUARK MODEL; RADIATION DETECTION; RADIOISOTOPES; SPECTRA; YEARS LIVING RADIOISOTOPES

Citation Formats

Wolf, Joachim. Absolute neutrino mass measurements. United States: N. p., 2011. Web. doi:10.1063/1.3644268.
Wolf, Joachim. Absolute neutrino mass measurements. United States. doi:10.1063/1.3644268.
Wolf, Joachim. Thu . "Absolute neutrino mass measurements". United States. doi:10.1063/1.3644268.
@article{osti_21611867,
title = {Absolute neutrino mass measurements},
author = {Wolf, Joachim},
abstractNote = {The neutrino mass plays an important role in particle physics, astrophysics and cosmology. In recent years the detection of neutrino flavour oscillations proved that neutrinos carry mass. However, oscillation experiments are only sensitive to the mass-squared difference of the mass eigenvalues. In contrast to cosmological observations and neutrino-less double beta decay (0v2{beta}) searches, single {beta}-decay experiments provide a direct, model-independent way to determine the absolute neutrino mass by measuring the energy spectrum of decay electrons at the endpoint region with high accuracy.Currently the best kinematic upper limits on the neutrino mass of 2.2eV have been set by two experiments in Mainz and Troitsk, using tritium as beta emitter. The next generation tritium {beta}-experiment KATRIN is currently under construction in Karlsruhe/Germany by an international collaboration. KATRIN intends to improve the sensitivity by one order of magnitude to 0.2eV. The investigation of a second isotope ({sup 137}Rh) is being pursued by the international MARE collaboration using micro-calorimeters to measure the beta spectrum. The technology needed to reach 0.2eV sensitivity is still in the R and D phase. This paper reviews the present status of neutrino-mass measurements with cosmological data, 0v2{beta} decay and single {beta}-decay.},
doi = {10.1063/1.3644268},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1382,
place = {United States},
year = {Thu Oct 06 00:00:00 EDT 2011},
month = {Thu Oct 06 00:00:00 EDT 2011}
}