Journal ArticleDOI
A method for measuring the electron antineutrino rest mass
V.M. Lobashev,P.E. Spivak +1 more
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In this article, an electrostatic integral spectrometer with adiabatic collimation was used to measure the tritium beta spectrum in order to determine the electron antineutrino rest mass.Abstract:
A method is proposed for measuring the tritium beta spectrum in order to determine the electron antineutrino rest mass. This method includes an electrostatic integral spectrometer with adiabatic collimation. The use of a source in the form of atomic polarized tritium in a strong magnetic field or of a gaseous molecular source is considered.read more
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Journal ArticleDOI
Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN
M. Aker,K. Altenmüller,Matthias Arenz,M. Babutzka,John E. Barrett,S. Bauer,Marcus Beck,A. Beglarian,J. Behrens,T. Bergmann,U. Besserer,Klaus Blaum,F. Block,S. Bobien,K. Bokeloh,J. Bonn,Beate Bornschein,Lutz Bornschein,H. Bouquet,T. Brunst,T. S. Caldwell,L. La Cascio,Suren Chilingaryan,W. Q. Choi,T. J. Corona,K. Debowski,M. Deffert,M. Descher,P. J. Doe,O. Dragoun,Guido Drexlin,J. A. Dunmore,S. Dyba,F. Edzards,L. Eisenblätter,K. Eitel,E. Ellinger,Ralph Engel,Sanshiro Enomoto,M. Erhard,D. Eversheim,M. Fedkevych,A. Felden,S. Fischer,B. Flatt,Joseph A. Formaggio,F. M. Fränkle,G. B. Franklin,H. Frankrone,F. Friedel,D. Fuchs,A. Fulst,D. Furse,K. Gauda,H. Gemmeke,W. Gil,Ferenc Glück,S. Görhardt,S. Groh,Steffen Grohmann,R. Grössle,R. Gumbsheimer,M. Ha Minh,M. Hackenjos,Volker Hannen,F. Harms,J. Hartmann,N. Haußmann,F. Heizmann,K. Helbing,S. Hickford,D. Hilk,B. Hillen,D. Hillesheimer,D. Hinz,T. Höhn,Bernhard Holzapfel,S. Holzmann,T. Houdy,M. A. Howe,A. Huber,T. M. James,A. Jansen,A. C. Kaboth,C. Karl,O. Kazachenko,J. Kellerer,N. Kernert,L. Kippenbrock,M. Kleesiek,M. Klein,C. Köhler,L. Köllenberger,Andreas Kopmann,M. Korzeczek,A. Kosmider,A. Kovalík,B. Krasch,M. Kraus,H. Krause,L. Kuckert,B. Kuffner,N. Kunka,Thierry Lasserre,T. L. Le,Ondřej Lebeda,M. Leber,B. Lehnert,J. Letnev,F. Leven,S. Lichter,V.M. Lobashev,Alexey Lokhov,M. Machatschek,E. Malcherek,K. Müller,M. Mark,A. Marsteller,E. L. Martin,C. Melzer,A. Menshikov,Susanne Mertens,L. I. Minter,Sebastian Mirz,Benjamin Monreal,P. I. Morales Guzmán,U. Naumann,W. Ndeke,Holger Neumann,S. Niemes,Mathias Noe,N. S. Oblath,H.-W. Ortjohann,A. Osipowicz,B. Ostrick,Ernst W. Otten,Diana Parno,D. G. Phillips,P. Plischke,A. Pollithy,A. W. P. Poon,J. Pouryamout,M. Prall,Florian Priester,Marco Röllig,C. Röttele,P. C.-O. Ranitzsch,O. Rest,R. Rinderspacher,R. G. H. Robertson,C. Rodenbeck,P. Rohr,Ch. Roll,S. Rupp,M. Ryšavý,R. Sack,Alejandro Saenz,P. Schäfer,L. Schimpf,K. Schlösser,Magnus Schlösser,L. Schlüter,H. Schön,K. Schönung,M. Schrank,B. Schulz,J. Schwarz,H. Seitz-Moskaliuk,W. Seller,V. Sibille,D. Siegmann,A. K. Skasyrskaya,M. Slezák,A. Špalek,Felix Spanier,M. Steidl,N. Steinbrink,Michael Sturm,M. Suesser,M. Sun,Denis Tcherniakhovski,H. H. Telle,Thomas Thümmler,L. A. Thorne,N. Titov,Igor Tkachev,N. Trost,K. Urban,D. Vénos,Kathrin Valerius,B.A. VanDevender,Reiner Vianden,A. P. Vizcaya Hernández,B. L. Wall,Sascha Wüstling,Marc Weber,Ch. Weinheimer,C. Weiss,Stefan Welte,J. Wendel,K. J. Wierman,J. F. Wilkerson,Joachim Wolf,W. Xu,Y.-R. Yen,M. Zacher,S. V. Zadorozhny,M. Zbořil,G. P. Zeller +208 more
TL;DR: An upper limit of 1.1 eV (90% confidence level) is derived on the absolute mass scale of neutrinos on the Karlsruhe Tritium Neutrino experiment KATRIN, which improves upon previous mass limits from kinematic measurements by almost a factor of 2 and provides model-independent input to cosmological studies of structure formation.
Journal ArticleDOI
Neutrino mass limit from tritium β decay
E W Otten,C Weinheimer +1 more
TL;DR: In this paper, a review of recent experiments on tritium β-spectroscopy searching for the absolute value of the electron neutrino mass m(νe) was presented.
Journal ArticleDOI
Current Direct Neutrino Mass Experiments
TL;DR: In this article, the authors review the status and perspectives of direct neutrino mass experiments and provide a brief overview of past neutrinos mass measurements (SN1987a-ToF studies, Mainz and Troitsk experiments for $^3$H, cryo-bolometers for $^{187}$Re).
Journal ArticleDOI
The search for the neutrino mass by direct method in the tritium beta-decay and perspectives of study it in the project KATRIN
TL;DR: In this article, the results of the search for neutrino mass in tritium beta-decay on the Troitsk nu-mass and Neutrino Mainz set-ups are presented.
Journal ArticleDOI
High precision measurement of the tritium β spectrum near its endpoint and upper limit on the neutrino mass
Ch. Weinheimer,B. Degenddag,A. Bleile,J. Bonn,Lutz Bornschein,O. Kazachenko,A. Kovalík,Ernst W. Otten +7 more
TL;DR: In this article, the endpoint region of the tritium β decay spectrum was investigated to determine the mass of the electron antineutrino and an upper bound of m ν 2 =−3.7±5.3 stat ±2.1 sys eV 2 /c 4 was derived.
References
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Journal ArticleDOI
A high-luminosity, high-resolution study of the end-point behaviour of the tritium β-spectrum (I). basic experimental procedure and analysis with regard to neutrino mass and neutrino degeneracy
TL;DR: In this article, an experimental investigation of the end-point region of the tritium β-spectrum is described, and the data obtained are analyzed with regard to their implications with respect to neutrino mass and neutrinos degeneracy.
Journal ArticleDOI
A new way to measure neutrino masses
TL;DR: In this paper, the IBEC theory for these isotopes is developed, with emphasis on 193 Pt and 163 Ho, and the theoretical and practical merits of β-decay and IBEC experiments -as tests for massive neutrinos - are compared.
Journal ArticleDOI
Magnetic Equation of State of a Gas of Spin-Polarized Atomic-Hydrogen
TL;DR: The magnetic equation of state of spin-polarized atomic hydrogen is reported, relating density to magnetic field ($B\ensuremath{\lesssim}10.5$ T), temperature, and atomic flux used to fill the sample cell as mentioned in this paper.
Journal ArticleDOI
Magnetic Confinement of Spin-Polarized Atomic Hydrogen
TL;DR: In this article, a quantitative study of the confinement times as a function of magnetic field is presented, in excellent agreement with the expected escape from the magnetic potential well accompanied by a very slow loss process.
Journal ArticleDOI
Spin-polarized atomic deuterium: Stabilization, limitations on density, and adsorption energy on helium
Isaac F. Silvera,J.T.M. Walraven +1 more
TL;DR: In this paper, a new technique for measuring the adsorption energy was employed to provide the first such measurement for D\ensuremath{\downarrow} on helium, yielding a result of 2.4$ K.