Analysis methods for the first KATRIN neutrino-mass measurement
| Autor: | KATRIN Collaboration, Aker, M., Altenmüller, K., Beglarian, A., Behrens, J., Berlev, A., Besserer, U., Bieringer, B., Blaum, K., Block, F., Bornschein, B., Bornschein, L., Böttcher, M., Brunst, T., Caldwell, T. S., La Cascio, L., Chilingaryan, S., Choi, W., Díaz Barrero, D., Debowski, K., Deffert, M., Descher, M., Doe, P. J., Dragoun, O., Drexlin, G., Dyba, S., Edzards, F., Eitel, K., Ellinger, E., Engel, R., Enomoto, S., Fedkevych, M., Felden, A., Formaggio, J. A., Fränkle, F. M., Franklin, G. B., Friedel, F., Fulst, A., Gauda, K., Gil, W., Glück, F., Grössle, R., Gumbsheimer, R., Höhn, T., Hannen, V., Haußmann, N., Helbing, K., Hickford, S., Hiller, R., Hillesheimer, D., Hinz, D., Houdy, T., Huber, A., Jansen, A., Köllenberger, L., Karl, C., Kellerer, J., Kippenbrock, L., Klein, M., Kopmann, A., Korzeczek, M., Kovalík, A., Krasch, B., Krause, H., Lasserre, T., Le, T. L., Lebeda, O., Lehnert, B., Lokhov, A., Lopez Poyato, J. M., Müller, K., Machatschek, M., Malcherek, E., Mark, M., Marsteller, A., Martin, E. L., Melzer, C., Mertens, S., Niemes, S., Oelpmann, P., Osipowicz, A., Parno, D. S., Poon, A. W. P., Priester, F., Röllig, M., Röttele, C., Rest, O., Robertson, R. G. H., Rodenbeck, C., Ryšavý, M., Sack, R., Saenz, A., Schaller (née Pollithy), A., Schäfer, P., Schimpf, L., Schlösser, K., Schlösser, M., Schlüter, L., Schrank, M., Schulz, B., Šefčík, M., Seitz-Moskaliuk, H., Sibille, V., Siegmann, D., Slezák, M., Spanier, F., Steidl, M., Sturm, M., Sun, M., Telle, H. H., Thümmler, T., Thorne, L. A., Titov, N., Tkachev, I., Trost, N., Vénos, D., Valerius, K., Vizcaya Hernández, A. P., Wüstling, S., Weber, M., Weinheimer, C., Weiss, C., Welte, S., Wendel, J., Wilkerson, J. F., Wolf, J., Xu, W., Yen, Y.-R., Zadoroghny, S., Zeller, G. |
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| Přispěvatelé: | 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 de Paris (UP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, KATRIN, UAM. Departamento de Química Física Aplicada, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
electron: energy
cosmological model Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors magnetic field Electron KATRIN 01 natural sciences 7. Clean energy High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) energy: threshold [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] neutrino: mass Nuclear Experiment (nucl-ex) Nuclear Experiment Analysis method Physics Química Instrumentation and Detectors (physics.ins-det) inelastic scattering ddc semiconductor detector: drift chamber kinematics cryogenics Präzisionsexperimente - Abteilung Blaum Neutrino numerical calculations: Monte Carlo Astrophysics - Cosmology and Nongalactic Astrophysics data analysis method Cosmology and Nongalactic Astrophysics (astro-ph.CO) Block (permutation group theory) FOS: Physical sciences Inelastic scattering [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] Tritium tritium: particle source Nuclear physics tritium: semileptonic decay electromagnetic field gas 0103 physical sciences Electron Capture ddc:530 [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] 010306 general physics Spectrometer 010308 nuclear & particles physics Mass measurement spectral spectrometer Neutrino Mass [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] statistical experimental results |
| Zdroj: | Physical Review D Physical Review D, American Physical Society, 2021, 104 (1), pp.012005. ⟨10.1103/PhysRevD.104.012005⟩ Physical review / D, 104 (1), Article: 012005 Physical Review Phys.Rev.D Phys.Rev.D, 2021, 104 (1), pp.012005. ⟨10.1103/PhysRevD.104.012005⟩ |
| ISSN: | 1550-7998 1550-2368 2470-0010 2470-0029 |
| DOI: | 10.1103/PhysRevD.104.012005⟩ |
| Popis: | We report on the data set, data handling, and detailed analysis techniques of the first neutrino-mass measurement by the Karlsruhe Tritium Neutrino (KATRIN) experiment, which probes the absolute neutrino-mass scale via the $\beta$-decay kinematics of molecular tritium. The source is highly pure, cryogenic T$_2$ gas. The $\beta$ electrons are guided along magnetic field lines toward a high-resolution, integrating spectrometer for energy analysis. A silicon detector counts $\beta$ electrons above the energy threshold of the spectrometer, so that a scan of the thresholds produces a precise measurement of the high-energy spectral tail. After detailed theoretical studies, simulations, and commissioning measurements, extending from the molecular final-state distribution to inelastic scattering in the source to subtleties of the electromagnetic fields, our independent, blind analyses allow us to set an upper limit of 1.1 eV on the neutrino-mass scale at a 90\% confidence level. This first result, based on a few weeks of running at a reduced source intensity and dominated by statistical uncertainty, improves on prior limits by nearly a factor of two. This result establishes an analysis framework for future KATRIN measurements, and provides important input to both particle theory and cosmology. Comment: 36 pages with 26 figures. Accepted to Phys. Rev. D |
| Databáze: | OpenAIRE |
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