Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN

KATRIN Collaboration

doi:10.1103/PhysRevLett.123.221802

Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN

KATRIN Collaboration

Professur für Dark Matter

Kernforschungszentrum Karlsruhe
Technische Universität München
CEA
Max-Planck-Institut für Physik
University of Bonn
Humanoid Technologies Lab (H2T)
Massachusetts Institute of Technology
University of Münster
Johannes Gutenberg University
Max-Planck-Institut für Kernphysik
University of North Carolina
Triangle Universities Nuclear Laboratory
Bergische Universität Wuppertal
University of Washington
Nuclear Physics Institute of the Cas
Carnegie Mellon University
Lawrence Berkeley National Laboratory
Institute for Nuclear Research of the Russian Academy of Sciences
University of Applied Sciences (HFD) Fulda
Case Western Reserve University
Humboldt-Universität zu Berlin
Universidad Autónoma de Madrid

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

363 Zitate (Scopus)

Abstract

We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.57 keV gives an effective neutrino mass square value of (-1.0-1.1+0.9) eV2. From this, we derive an upper limit of 1.1 eV (90% confidence level) on the absolute mass scale of neutrinos. This value coincides with the KATRIN sensitivity. It 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.

Originalsprache	Englisch
Aufsatznummer	221802
Fachzeitschrift	Physical Review Letters
Jahrgang	123
Ausgabenummer	22
DOIs	https://doi.org/10.1103/PhysRevLett.123.221802
Publikationsstatus	Veröffentlicht - 25 Nov. 2019

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10.1103/PhysRevLett.123.221802

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@article{46526d710ea44b579c1f70baa2fca3a2,

title = "Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN",

abstract = "We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.57 keV gives an effective neutrino mass square value of (-1.0-1.1+0.9) eV2. From this, we derive an upper limit of 1.1 eV (90\% confidence level) on the absolute mass scale of neutrinos. This value coincides with the KATRIN sensitivity. It 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.",

author = "\{KATRIN Collaboration\} and M. Aker and K. Altenm{\"u}ller and M. Arenz and M. Babutzka and J. Barrett and S. Bauer and M. Beck and A. Beglarian and J. Behrens and T. Bergmann and U. Besserer and K. Blaum and F. Block and S. Bobien and K. Bokeloh and J. Bonn and B. Bornschein and L. Bornschein and H. Bouquet and T. Brunst and Caldwell, \{T. S.\} and \{La Cascio\}, L. and S. Chilingaryan and W. Choi and Corona, \{T. J.\} and K. Debowski and M. Deffert and M. Descher and Doe, \{P. J.\} and O. Dragoun and G. Drexlin and Dunmore, \{J. A.\} and S. Dyba and F. Edzards and L. Eisenbl{\"a}tter and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and M. Erhard and D. Eversheim and M. Fedkevych and A. Felden and S. Fischer and B. Flatt and Formaggio, \{J. A.\} and Fr{\"a}nkle, \{F. M.\} and Franklin, \{G. B.\} and H. Frankrone and S. Mertens",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",

year = "2019",

month = nov,

day = "25",

doi = "10.1103/PhysRevLett.123.221802",

language = "English",

volume = "123",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

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TY - JOUR

T1 - Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN

AU - KATRIN Collaboration

AU - Aker, M.

AU - Altenmüller, K.

AU - Arenz, M.

AU - Babutzka, M.

AU - Barrett, J.

AU - Bauer, S.

AU - Beck, M.

AU - Beglarian, A.

AU - Behrens, J.

AU - Bergmann, T.

AU - Besserer, U.

AU - Blaum, K.

AU - Block, F.

AU - Bobien, S.

AU - Bokeloh, K.

AU - Bonn, J.

AU - Bornschein, B.

AU - Bornschein, L.

AU - Bouquet, H.

AU - Brunst, T.

AU - Caldwell, T. S.

AU - La Cascio, L.

AU - Chilingaryan, S.

AU - Choi, W.

AU - Corona, T. J.

AU - Debowski, K.

AU - Deffert, M.

AU - Descher, M.

AU - Doe, P. J.

AU - Dragoun, O.

AU - Drexlin, G.

AU - Dunmore, J. A.

AU - Dyba, S.

AU - Edzards, F.

AU - Eisenblätter, L.

AU - Eitel, K.

AU - Ellinger, E.

AU - Engel, R.

AU - Enomoto, S.

AU - Erhard, M.

AU - Eversheim, D.

AU - Fedkevych, M.

AU - Felden, A.

AU - Fischer, S.

AU - Flatt, B.

AU - Formaggio, J. A.

AU - Fränkle, F. M.

AU - Franklin, G. B.

AU - Frankrone, H.

AU - Mertens, S.

PY - 2019/11/25

Y1 - 2019/11/25

N2 - We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.57 keV gives an effective neutrino mass square value of (-1.0-1.1+0.9) eV2. From this, we derive an upper limit of 1.1 eV (90% confidence level) on the absolute mass scale of neutrinos. This value coincides with the KATRIN sensitivity. It 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.

AB - We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.57 keV gives an effective neutrino mass square value of (-1.0-1.1+0.9) eV2. From this, we derive an upper limit of 1.1 eV (90% confidence level) on the absolute mass scale of neutrinos. This value coincides with the KATRIN sensitivity. It 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.

UR - https://www.scopus.com/pages/publications/85076422968

U2 - 10.1103/PhysRevLett.123.221802

DO - 10.1103/PhysRevLett.123.221802

M3 - Article

C2 - 31868426

AN - SCOPUS:85076422968

SN - 0031-9007

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 221802

ER -

Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN

Abstract

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