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

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ID: 121329
2019
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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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Authors M. Aker,K. AltenmĂŒller,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. EisenblĂ€tter,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. FrĂ€nkle,G. B. Franklin,H. Frankrone,F. Friedel,D. Fuchs,A. Fulst,D. Furse,K. Gauda,H. Gemmeke,W. Gil,F. GlĂŒck,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. KovalĂ­k,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. MĂŒller,M. Mark,A. Marsteller,E. L. Martin,C. Melzer,A. Menshikov,S. Mertens,L. I. Minter,S. Mirz,B. Monreal,P. I. Morales GuzmĂĄn,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. RyĆĄavĂœ,R. Sack,A. Saenz,P. SchĂ€fer,L. Schimpf,K. Schlösser,L. SchlĂŒter,H. Schön,K. Schönung,M. Schrank,B. Schulz,J. Schwarz,H. Seitz-Moskaliuk,W. Seller,V. Sibille,D. Siegmann,A. Skasyrskaya,M. SlezĂĄk,A. Ć palek,F. Spanier,M. Steidl,N. Steinbrink,M. Sturm,M. Suesser,M. Sun,D. Tcherniakhovski,H. H. Telle,T. ThĂŒmmler,L. A. Thorne,N. Titov,I. Tkachev,N. Trost,K. Urban,D. VĂ©nos,K. Valerius,B. A. VanDevender,R. Vianden,A. P. Vizcaya HernĂĄndez,B. L. Wall,S. WĂŒstling,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. Zboƙil,G. Zeller,KATRIN Collaboration,L. Bornschein,M. Schlösser;M. Aker;K. AltenmĂŒller;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. EisenblĂ€tter;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. FrĂ€nkle;G. B. Franklin;H. Frankrone;F. Friedel;D. Fuchs;A. Fulst;D. Furse;K. Gauda;H. Gemmeke;W. Gil;F. GlĂŒck;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. KovalĂ­k;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. MĂŒller;M. Mark;A. Marsteller;E. L. Martin;C. Melzer;A. Menshikov;S. Mertens;L. I. Minter;S. Mirz;B. Monreal;P. I. Morales GuzmĂĄn;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. RyĆĄavĂœ;R. Sack;A. Saenz;P. SchĂ€fer;L. Schimpf;K. Schlösser;L. SchlĂŒter;H. Schön;K. Schönung;M. Schrank;B. Schulz;J. Schwarz;H. Seitz-Moskaliuk;W. Seller;V. Sibille;D. Siegmann;A. Skasyrskaya;M. SlezĂĄk;A. Ć palek;F. Spanier;M. Steidl;N. Steinbrink;M. Sturm;M. Suesser;M. Sun;D. Tcherniakhovski;H. H. Telle;T. ThĂŒmmler;L. A. Thorne;N. Titov;I. Tkachev;N. Trost;K. Urban;D. VĂ©nos;K. Valerius;B. A. VanDevender;R. Vianden;A. P. Vizcaya HernĂĄndez;B. L. Wall;S. WĂŒstling;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. Zboƙil;G. Zeller;KATRIN Collaboration;L. Bornschein;M. Schlösser;
Journal physical review letters
Year 2019
DOI 10.1103/physrevlett.123.221802
URL
https://sciprofiles.com/publication/view/9f2042ba167b3d72463347eb03e273c0
Keywords
structure model tritium katrin neutrino mass kinematic upper limit improves

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