학술논문
New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs
Document Type
article
Author
Aker, M; Batzler, D; Beglarian, A; Behrens, J; Berlev, A; Besserer, U; Bieringer, B; Block, F; Bobien, S; Bornschein, B; Bornschein, L; Böttcher, M; Brunst, T; Caldwell, TS; Carney, RMD; Chilingaryan, S; Choi, W; Debowski, K; Descher, M; Barrero, D Díaz; Doe, PJ; Dragoun, O; Drexlin, G; Edzards, F; Eitel, K; Ellinger, E; Engel, R; Enomoto, S; Felden, A; Formaggio, JA; Fränkle, FM; Franklin, GB; Friedel, F; Fulst, A; Gauda, K; Gavin, AS; Gil, W; Glück, F; Grössle, R; Gumbsheimer, R; Hannen, V; Haußmann, N; Helbing, K; Hickford, S; Hiller, R; Hillesheimer, D; Hinz, D; Höhn, T; Houdy, T; Huber, A; Jansen, A; Karl, C; Kellerer, F; Kellerer, J; Kleifges, M; Klein, M; Köhler, C; Köllenberger, L; Kopmann, A; Korzeczek, M; Kovalík, A; Krasch, B; Krause, H; La Cascio, L; Lasserre, T; Le, TL; Lebeda, O; Lehnert, B; Lokhov, A; Machatschek, M; Malcherek, E; Mark, M; Marsteller, A; Martin, EL; Melzer, C; Mertens, S; Mostafa, J; Müller, K; Neumann, H; Niemes, S; Oelpmann, P; Parno, DS; Poon, AWP; Poyato, JML; Priester, F; Ráliš, J; Ramachandran, S; Robertson, RGH; Rodejohann, W; Rodenbeck, C; Röllig, M; Röttele, C; Ryšavý, M; Sack, R; Saenz, A; Salomon, R; Schäfer, P; Schimpf, L; Schlösser, M; Schlösser, K
Source
Physical Review Letters. 129(1)
Subject
Language
Abstract
We report on the direct search for cosmic relic neutrinos using data acquired during the first two science campaigns of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity molecular tritium gas source are analyzed by a high-resolution MAC-E filter around the end point at 18.57 keV. The analysis is sensitive to a local relic neutrino overdensity ratio of η