First constraints on general neutrino interactions based on KATRIN data

The precision measurement of the tritium \(\beta\)-decay spectrum performed by the KATRIN experiment provides a unique way to search for general neutrino interactions (GNI). All theoretical allowed GNI terms involving neutrinos are incorporated into a low-energy effective field theory, and can be id...

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Published in:arXiv.org 2024-11
Main Authors: Beisenkötter, J, Biassoni, M, Bieringer, B, Biondi, Y, Block, F, Bornschein, B, Bornschein, L, Böttcher, M, Carminati, M, Chatrabhuti, A, Daniel, B A, Descher, M, Drexlin, G, Edzards, F, Engel, R, Enomoto, S, Felden, A, Fengler, C, Fiorini, C, maggio, J A, stner, C, Fränkle, F M, Gauda, K, Gil, W, Glück, F, Grössle, R, Hannen, V, Hasselmann, L, Helbing, K, Henke, H, Heyns, S, Hiller, R, Hinz, D, Huber, A, Jansen, A, Köhler, C, Kopmann, A, Kovač, N, La Cascio, L, Lasserre, T, Lauer, J, Le, T L, G Li, Lokhov, A, Machatschek, M, Mark, M, Marsteller, A, Melzer, C, Mertens, S, Mohanty, S, Mostafa, J, Nava, A, Neumann, H, Onillon, A, Parno, D S, Pavan, M, Pinsook, U, Poon, A W P, Poyato, J M L, Priester, F, Ráliš, J, Ramachandran, S, Robertson, R G H, Rodenbeck, C, Röllig, M, Sack, R, Saenz, A, Salomon, R, Schäfer, P, Schlösser, K, Schlüter, L, Schrank, M, Schürmann, J, Schütz, A K, Schwemmer, A, Schwenck, A, Seeyangnok, J, Šefčík, M, Siegmann, D, Simon, F, Songwadhana, J, Spreng, D, Sreethawong, W, Štorek, J, Stribl, X, Sturm, M, Telle, H H, Thorne, L A, Titov, N, Tkachev, I, Valerius, K, Vénos, D, Weinheimer, C, Wendel, J, Wetter, M, Wiesinger, C, Wilkerson, J F, Wüstling, S, W Xu, Zadorozhny, S
Format: Article
Language:English
Subjects:
Beta decay
Constraints
Field theory
Neutrinos
Parameter identification
Tritium
Online Access:Get full text
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Summary:The precision measurement of the tritium \(\beta\)-decay spectrum performed by the KATRIN experiment provides a unique way to search for general neutrino interactions (GNI). All theoretical allowed GNI terms involving neutrinos are incorporated into a low-energy effective field theory, and can be identified by specific signatures in the measured tritium \(\beta\)-spectrum. In this paper an effective description of the impact of GNI on the \(\beta\)-spectrum is formulated and the first constraints on the effective GNI parameters are derived based on the 4 million electrons collected in the second measurement campaign of KATRIN in 2019. In addition, constraints on selected types of interactions are investigated, thereby exploring the potential of KATRIN to search for more specific new physics cases, including a right-handed W boson, a charged Higgs or leptoquarks.
ISSN:2331-8422