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Article ; Online: Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN.

Aker, M / Altenmüller, K / Arenz, M / Babutzka, M / Barrett, J / Bauer, S / Beck, M / Beglarian, A / Behrens, J / Bergmann, T / Besserer, U / Blaum, K / Block, F / Bobien, S / Bokeloh, K / Bonn, J / Bornschein, B / Bornschein, L / Bouquet, H /
Brunst, T / Caldwell, T S / La Cascio, L / Chilingaryan, S / Choi, W / Corona, T J / Debowski, K / Deffert, M / Descher, M / Doe, P J / Dragoun, O / Drexlin, G / Dunmore, J A / Dyba, S / Edzards, F / Eisenblätter, L / Eitel, K / Ellinger, E / Engel, R / Enomoto, S / Erhard, M / Eversheim, D / Fedkevych, M / Felden, A / Fischer, S / Flatt, B / Formaggio, J A / Fränkle, F M / Franklin, G B / Frankrone, H / Friedel, F / Fuchs, D / Fulst, A / Furse, D / Gauda, K / Gemmeke, H / Gil, W / Glück, F / Görhardt, S / Groh, S / Grohmann, S / Grössle, R / Gumbsheimer, R / Ha Minh, M / Hackenjos, M / Hannen, V / Harms, F / Hartmann, J / Haußmann, N / Heizmann, F / Helbing, K / Hickford, S / Hilk, D / Hillen, B / Hillesheimer, D / Hinz, D / Höhn, T / Holzapfel, B / Holzmann, S / Houdy, T / Howe, M A / Huber, A / James, T M / Jansen, A / Kaboth, A / Karl, C / Kazachenko, O / Kellerer, J / Kernert, N / Kippenbrock, L / Kleesiek, M / Klein, M / Köhler, C / Köllenberger, L / Kopmann, A / Korzeczek, M / Kosmider, A / Kovalík, A / Krasch, B / Kraus, M / Krause, H / Kuckert, L / Kuffner, B / Kunka, N / Lasserre, T / Le, T L / Lebeda, O / Leber, M / Lehnert, B / Letnev, J / Leven, F / Lichter, S / Lobashev, V M / Lokhov, A / Machatschek, M / Malcherek, E / Müller, K / Mark, M / Marsteller, A / Martin, E L / Melzer, C / Menshikov, A / Mertens, S / Minter, L I / Mirz, S / Monreal, B / Morales Guzmán, P I / Naumann, U / Ndeke, W / Neumann, H / Niemes, S / Noe, M / Oblath, N S / Ortjohann, H-W / Osipowicz, A / Ostrick, B / Otten, E / Parno, D S / Phillips, D G / Plischke, P / Pollithy, A / Poon, A W P / Pouryamout, J / Prall, M / Priester, F / Röllig, M / Röttele, C / Ranitzsch, P C-O / Rest, O / Rinderspacher, R / Robertson, R G H / Rodenbeck, C / Rohr, P / Roll, Ch / Rupp, S / Ryšavý, M / Sack, R / Saenz, A / Schäfer, P / Schimpf, L / Schlösser, K / Schlösser, M / Schlüter, L / Schön, H / Schönung, K / Schrank, M / Schulz, B / Schwarz, J / Seitz-Moskaliuk, H / Seller, W / Sibille, V / Siegmann, D / Skasyrskaya, A / Slezák, M / Špalek, A / Spanier, F / Steidl, M / Steinbrink, N / Sturm, M / Suesser, M / Sun, M / Tcherniakhovski, D / Telle, H H / Thümmler, T / Thorne, L A / Titov, N / Tkachev, I / Trost, N / Urban, K / Vénos, D / Valerius, K / VanDevender, B A / Vianden, R / Vizcaya Hernández, A P / Wall, B L / Wüstling, S / Weber, M / Weinheimer, C / Weiss, C / Welte, S / Wendel, J / Wierman, K J / Wilkerson, J F / Wolf, J / Xu, W / Yen, Y-R / Zacher, M / Zadorozhny, S / Zbořil, M / Zeller, G

Physical review letters

2019  Volume 123, Issue 22, Page(s) 221802

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 ... ...

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})  eV^{2}. 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.
Language English
Publishing date 2019-12-23
Publishing country United States
Document type Journal Article
ZDB-ID 208853-8
ISSN 1079-7114 ; 0031-9007
ISSN (online) 1079-7114
ISSN 0031-9007
DOI 10.1103/PhysRevLett.123.221802
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