First constraints on general neutrino interactions based on KATRIN data
Abstract
The precision measurement of the tritium -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 -spectrum. In this paper an effective description of the impact of GNI on the -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.
Cite
@article{arxiv.2410.13895,
title = {First constraints on general neutrino interactions based on KATRIN data},
author = {M. Aker and D. Batzler and A. Beglarian and J. Beisenkötter and M. Biassoni and B. Bieringer and Y. Biondi and F. Block and B. Bornschein and L. Bornschein and M. Böttcher and M. Carminati and A. Chatrabhuti and S. Chilingaryan and B. A. Daniel and M. Descher and D. Díaz Barrero and P. J. Doe and O. Dragoun and G. Drexlin and F. Edzards and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and A. Felden and C. Fengler and C. Fiorini and J. A. Formaggio and C. Forstner and F. M. Fränkle and G. Gagliardi and K. Gauda and A. S. Gavin and W. Gil and F. Glück and R. Grössle and N. Gutknecht and V. Hannen and L. Hasselmann and K. Helbing and H. Henke and S. Heyns and R. Hiller and D. Hillesheimer and D. Hinz and T. Höhn and A. Huber and A. Jansen and K. Khosonthongkee and C. Köhler and L. Köllenberger and A. Kopmann and N. Kovač and L. La Cascio and T. Lasserre and J. Lauer and T. L. Le and O. Lebeda and B. Lehnert and G. Li and A. Lokhov and M. Machatschek and M. Mark and A. Marsteller and K. McMichael and C. Melzer and S. Mertens and S. Mohanty and J. Mostafa and K. Müller and A. Nava and H. Neumann and S. Niemes and A. Onillon and D. S. Parno and M. Pavan and U. Pinsook and A. W. P. Poon and J. M. L. Poyato and F. Priester and J. Ráliš and S. Ramachandran and R. G. H. Robertson and C. Rodenbeck and M. Röllig and R. Sack and A. Saenz and R. Salomon and P. Schäfer and K. Schlösser and M. Schlösser and L. Schlüter and S. Schneidewind and M. Schrank and J. Schürmann and A. K. Schütz and A. Schwemmer and A. Schwenck and J. Seeyangnok and M. Šefčík and D. Siegmann and F. Simon and J. Songwadhana and F. Spanier and D. Spreng and W. Sreethawong and M. Steidl and J. Štorek and X. Stribl and M. Sturm and N. Suwonjandee and N. Tan Jerome and H. H. Telle and L. A. Thorne and T. Thümmler and N. Titov and I. Tkachev and K. Urban and K. Valerius and D. Vénos and C. Weinheimer and S. Welte and J. Wendel and M. Wetter and C. Wiesinger and J. F. Wilkerson and J. Wolf and S. Wüstling and J. Wydra and W. Xu and S. Zadorozhny and G. Zeller},
journal= {arXiv preprint arXiv:2410.13895},
year = {2025}
}