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

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

M. Aker,K. Altenmüller,M. Arenz,M. Babutzka,J. Barrett,S. Bauer,M. Beck,A. Beglarian,J. Behrens,T. Bergmann,U. Besserer,K. Blaum,F. Block,S. Bobien,K. Bokeloh,J. Bonn,B. Bornschein,H. Bouquet,T. Brunst,T. S. Caldwell,L. La Cascio,S. Chilingaryan,W. Choi,T. J. Corona,K. Debowski,M. Deffert,M. Descher,P. J. Doe,O. Dragoun,G. Drexlin,J. A. Dunmore,S. Dyba,F. Edzards,L. Eisenblätter,K. Eitel,E. Ellinger,R. Engel,S. Enomoto,M. Erhard,D. Eversheim,M. Fedkevych,A. Felden,S. Fischer,B. Flatt,J. A. Formaggio,F. M. Fränkle,G. B. Franklin,H. Frankrone,F. Friedel,D. Fuchs,A. Fulst,D. Furse,K. Gauda,H. Gemmeke,W. Gil,F. Glück,S. Görhardt,S. Groh,S. Grohmann,R. Grössle,R. Gumbsheimer,M. Ha Minh,M. Hackenjos,V. Hannen,F. Harms,J. Hartmann,N. Haußmann,F. Heizmann,K. Helbing,S. Hickford,D. Hilk,B. Hillen,D. Hillesheimer,D. Hinz,T. Höhn,B. Holzapfel,S. Holzmann,T. Houdy,M. A. Howe,A. Huber,T. M. James,A. Jansen,A. Kaboth,C. Karl,O. Kazachenko,J. Kellerer,N. Kernert,L. Kippenbrock,M. Kleesiek,M. Klein,C. Köhler,L. Köllenberger,A. Kopmann,M. Korzeczek,A. Kosmider,A. Kovalík,B. Krasch,M. Kraus,H. Krause,L. Kuckert,B. Kuffner,N. Kunka,T. Lasserre,T. L. Le,O. Lebeda,M. Leber,B. Lehnert,J. Letnev,F. Leven,S. Lichter,V. M. Lobashev,A. Lokhov,M. Machatschek,E. Malcherek,K. Müller,M. Mark,A. Marsteller,E. L. Martin,C. Melzer,A. Menshikov,S. Mertens,L. I. Minter,S. Mirz,B. Monreal,P. I. Morales Guzmán,U. Naumann,W. Ndeke,H. Neumann,S. Niemes,M. Noe,N. S. Oblath,H.-W. Ortjohann,A. Osipowicz,B. Ostrick,E. Otten,D. S. Parno,D. G. Phillips,P. Plischke,A. Pollithy,A. W. P. Poon,J. Pouryamout,M. Prall,F. Priester,M. 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,A. Saenz,P. Schäfer,L. Schimpf,K. Schlösser,L. Schlüter,H. Schön,K. Schönung,M. Schrank,B. Schulz,J. Schwarz,H. Seitz-Moskaliuk,W. Seller,V. Sibille,D. Siegmann,A. Skasyrskaya,M. Slezák,A. Špalek,F. Spanier,M. Steidl,N. Steinbrink,M. Sturm,M. Suesser,M. Sun,D. Tcherniakhovski,H. H. Telle,T. Thümmler,L. A. Thorne,N. Titov,I. Tkachev,N. Trost,K. Urban,D. Vénos,K. Valerius,B. A. VanDevender,R. Vianden,A. P. Vizcaya Hernández,B. L. Wall,S. Wüstling,M. Weber,C. Weinheimer,C. Weiss,S. Welte,J. Wendel,K. J. Wierman,J. F. Wilkerson,J. Wolf,W. Xu,Y.-R. Yen,M. Zacher,S. Zadorozhny,M. Zbořil,G. Zeller,KATRIN Collaboration,L. Bornschein,M. Schlösser;M. Aker;K. Altenmüller;M. Arenz;M. Babutzka;J. Barrett;S. Bauer;M. Beck;A. Beglarian;J. Behrens;T. Bergmann;U. Besserer;K. Blaum;F. Block;S. Bobien;K. Bokeloh;J. Bonn;B. Bornschein;H. Bouquet;T. Brunst;T. S. Caldwell;L. La Cascio;S. Chilingaryan;W. Choi;T. J. Corona;K. Debowski;M. Deffert;M. Descher;P. J. Doe;O. Dragoun;G. Drexlin;J. A. Dunmore;S. Dyba;F. Edzards;L. Eisenblätter;K. Eitel;E. Ellinger;R. Engel;S. Enomoto;M. Erhard;D. Eversheim;M. Fedkevych;A. Felden;S. Fischer;B. Flatt;J. A. Formaggio;F. M. Fränkle;G. B. Franklin;H. Frankrone;F. Friedel;D. Fuchs;A. Fulst;D. Furse;K. Gauda;H. Gemmeke;W. Gil;F. Glück;S. Görhardt;S. Groh;S. Grohmann;R. Grössle;R. Gumbsheimer;M. Ha Minh;M. Hackenjos;V. Hannen;F. Harms;J. Hartmann;N. Haußmann;F. Heizmann;K. Helbing;S. Hickford;D. Hilk;B. Hillen;D. Hillesheimer;D. Hinz;T. Höhn;B. Holzapfel;S. Holzmann;T. Houdy;M. A. Howe;A. Huber;T. M. James;A. Jansen;A. Kaboth;C. Karl;O. Kazachenko;J. Kellerer;N. Kernert;L. Kippenbrock;M. Kleesiek;M. Klein;C. Köhler;L. Köllenberger;A. Kopmann;M. Korzeczek;A. Kosmider;A. Kovalík;B. Krasch;M. Kraus;H. Krause;L. Kuckert;B. Kuffner;N. Kunka;T. Lasserre;T. L. Le;O. Lebeda;M. Leber;B. Lehnert;J. Letnev;F. Leven;S. Lichter;V. M. Lobashev;A. Lokhov;M. Machatschek;E. Malcherek;K. Müller;M. Mark;A. Marsteller;E. L. Martin;C. Melzer;A. Menshikov;S. Mertens;L. I. Minter;S. Mirz;B. Monreal;P. I. Morales Guzmán;U. Naumann;W. Ndeke;H. Neumann;S. Niemes;M. Noe;N. S. Oblath;H.-W. Ortjohann;A. Osipowicz;B. Ostrick;E. Otten;D. S. Parno;D. G. Phillips;P. Plischke;A. Pollithy;A. W. P. Poon;J. Pouryamout;M. Prall;F. Priester;M. 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;A. Saenz;P. Schäfer;L. Schimpf;K. Schlösser;L. Schlüter;H. Schön;K. Schönung;M. Schrank;B. Schulz;J. Schwarz;H. Seitz-Moskaliuk;W. Seller;V. Sibille;D. Siegmann;A. Skasyrskaya;M. Slezák;A. Špalek;F. Spanier;M. Steidl;N. Steinbrink;M. Sturm;M. Suesser;M. Sun;D. Tcherniakhovski;H. H. Telle;T. Thümmler;L. A. Thorne;N. Titov;I. Tkachev;N. Trost;K. Urban;D. Vénos;K. Valerius;B. A. VanDevender;R. Vianden;A. P. Vizcaya Hernández;B. L. Wall;S. Wüstling;M. Weber;C. Weinheimer;C. Weiss;S. Welte;J. Wendel;K. J. Wierman;J. F. Wilkerson;J. Wolf;W. Xu;Y.-R. Yen;M. Zacher;S. Zadorozhny;M. Zbořil;G. Zeller;KATRIN Collaboration;L. Bornschein;M. Schlösser;
physical review letters 2019 Vol. 123 pp. 221802-
215
schlösser2019physicalimproved

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.

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10.1103/physrevlett.123.221802
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