دورية أكاديمية
Improved eV-scale sterile-neutrino constraints from the second KATRIN measurement campaign
| العنوان: | Improved eV-scale sterile-neutrino constraints from the second KATRIN measurement campaign |
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| المؤلفون: | 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, T.S., Carney, R.M.D., Chilingaryan, S., Choi, W., Debowski, K., Descher, M., Barrero, D. Díaz, Doe, P.J., Dragoun, O., Drexlin, G., Edzards, F., Eitel, K., Ellinger, E., Engel, R., Enomoto, S., Felden, A., Formaggio, J.A., Fränkle, F.M., Franklin, G.B., Friedel, F., Fulst, A., Gauda, K., Gavin, A.S., 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, 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, T.L., Lebeda, O., Lehnert, B., Lokhov, A., Machatschek, M., Malcherek, E., Mark, M., Marsteller, A., Martin, E.L., Melzer, C., Mertens, S., Mostafa, J., Müller, K., Neumann, H., Niemes, S., Oelpmann, P., Parno, D.S., Poon, A.W.P., Poyato, J.M.L., Priester, F., Ráliš, J., Ramachandran, S., Robertson, R.G.H., Rodejohann, W., Rodenbeck, C., Röllig, M., Röttele, C., Ryšavý, M., Sack, R., Saenz, A., Salomon, R., Schäfer, P., Schimpf, L., Schlösser, M., Schlösser, K., Schlüter, L., Schneidewind, S., Schrank, M., Schwemmer, A., Šefčík, M., Sibille, V., Siegmann, D., Slezák, M., Spanier, F., Steidl, M., Sturm, M., Telle, H.H., Thorne, L.A., Thümmler, T., Titov, N., Tkachev, I., Urban, K., Valerius, K., Vénos, D., Hernández, A.P. Vizcaya, Weinheimer, C., Welte, S., Wendel, J., Wetter, M., Wiesinger, C., Wilkerson, J.F., Wolf, J., Wüstling, S., Wydra, J., Xu, W., Zadoroghny, S., Zeller, G. |
| المساهمون: | AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), KATRIN |
| المصدر: | ISSN: 1550-7998. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2022 |
| المجموعة: | HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) |
| مصطلحات موضوعية: | neutrino: sterile, neutrino: flavor, antineutrino: nuclear reactor, KATRIN, tritium: semileptonic decay, neutrino: mixing, neutrino: mass difference, spectral, gallium, shape analysis, anomaly, data analysis method, experimental results, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] |
| الوصف: | International audience ; We present the results of the light sterile neutrino search from the second Karlsruhe Tritium Neutrino (KATRIN) measurement campaign in 2019. Approaching nominal activity, 3.76 × 10 6 tritium β -electrons are analyzed in an energy window extending down to 40 eV below the tritium end point at E 0 = 18.57 keV . We consider the 3 ν + 1 framework with three active and one sterile neutrino flavors. The analysis is sensitive to a fourth mass eigenstate m 4 2 ≲ 1600 eV 2 and active-to-sterile mixing | U e 4 | 2 ≳ 6 × 10 - 3 . As no sterile-neutrino signal was observed, we provide improved exclusion contours on m 4 2 and | U e 4 | 2 at 95% C.L. Our results supersede the limits from the Mainz and Troitsk experiments. Furthermore, we are able to exclude the large Δ m 41 2 solutions of the reactor antineutrino and gallium anomalies to a great extent. The latter has recently been reaffirmed by the BEST Collaboration and could be explained by a sterile neutrino with large mixing. While the remaining solutions at small Δ m 41 2 are mostly excluded by short-baseline reactor experiments, KATRIN is the only ongoing laboratory experiment to be sensitive to relevant solutions at large Δ m 41 2 through a robust spectral shape analysis. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2201.11593; hal-03580511; https://hal.science/hal-03580511Test; ARXIV: 2201.11593; INSPIRE: 2020446 |
| DOI: | 10.1103/PhysRevD.105.072004 |
| الإتاحة: | https://doi.org/10.1103/PhysRevD.105.072004Test https://hal.science/hal-03580511Test |
| رقم الانضمام: | edsbas.73BCE330 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/PhysRevD.105.072004 |
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