Measurements with a TRISTAN prototype detector system at the 'Troitsk nu-mass' experiment in integral and differential mode
| Autor: | Thierry Lasserre, T. Brunst, M. Slezák, A. Huber, Vladimir Parfenov, E.V. Geraskin, Igor Tkachev, A. K. Skasyrskaya, A. I. Belesev, A.A. Lokhov, S. V. Zadorozhny, T. Houdy, V.G. Chernov, Konrad Altenmüller, A. A. Nozik, N. A. Likhovid, V. S. Pantuev, M. Korzeczek, Susanne Mertens, Nikolay Ionov, D. Abdurashitov, Daniel Siegmann, Peter Lechner, Luca Bombelli, G. A. Koroteev |
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| Přispěvatelé: | Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Sterile neutrino
Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors K : Particle detectors Astrophysics::High Energy Astrophysical Phenomena Dark matter measurement methods Data analysis FOS: Physical sciences KATRIN 01 natural sciences 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine tritium: semileptonic decay 0103 physical sciences [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Instrumentation Mathematical Physics Astroparticle physics Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Instrumentation and Detectors (physics.ins-det) neutrino: sterile Systematic effects Massless particle neutrino: detector Neutrino detector High Energy Physics::Experiment upgrade Neutrino neutrino: mixing performance Lepton |
| Zdroj: | Journal of Instrumentation Journal of Instrumentation, IOP Publishing, 2019, 14 (11), pp.P11013. ⟨10.1088/1748-0221/14/11/P11013⟩ JINST JINST, 2019, 14 (11), pp.P11013. ⟨10.1088/1748-0221/14/11/P11013⟩ |
| ISSN: | 1748-0221 |
| DOI: | 10.1088/1748-0221/14/11/P11013⟩ |
| Popis: | Sterile neutrinos emerge in minimal extensions of the Standard Model which can solve a number of open questions in astroparticle physics. For example, sterile neutrinos in the keV-mass range are viable dark matter candidates. Their existence would lead to a kink-like distortion in the tritium $��$-decay spectrum. In this work we report about the instrumentation of the Troitsk nu-mass experiment with a 7-pixel TRISTAN prototype detector and measurements in both differential and integral mode. The combination of the two modes is a key requirement for a precise sterile neutrino search, as both methods are prone to largely different systematic uncertainties. Thanks to the excellent performance of the TRISTAN detector at high rates, a sterile neutrino search up to masses of about 6 keV could be performed, which enlarges the previous accessible mass range by a factor of 3. Upper limits on the neutrino mixing amplitude in the mass range < 5.6 keV (differential) and < 6.6 keV (integral) are presented. These results demonstrate the feasibility of a sterile neutrino search as planned in the upgrade of the KATRIN experiment with the final TRISTAN detector and read-out system. 17 pages, 10 figures, Tristan in Troitsk phase 2 and 3 |
| Databáze: | OpenAIRE |
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