Direct neutrino-mass measurement based on 259 days of KATRIN data

That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in fields from particle physics to cosmology. We report on the search for the effective electron antineutrino mass with the KATRIN experiment. K...

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Vydané v:Science (American Association for the Advancement of Science) Ročník 388; číslo 6743; s. 180
Hlavní autori: Aker, Max, Batzler, Dominic, Beglarian, Armen, Behrens, Jan, Beisenkötter, Justus, Biassoni, Matteo, Bieringer, Benedikt, Biondi, Yanina, Block, Fabian, Bobien, Steffen, Böttcher, Matthias, Bornschein, Beate, Bornschein, Lutz, Caldwell, Tom S, Carminati, Marco, Chatrabhuti, Auttakit, Chilingaryan, Suren, Daniel, Byron A, Debowski, Karol, Descher, Martin, Barrero, Deseada Díaz, Doe, Peter J, Dragoun, Otokar, Drexlin, Guido, Edzards, Frank, Eitel, Klaus, Ellinger, Enrico, Engel, Ralph, Enomoto, Sanshiro, Felden, Arne, Fengler, Caroline, Fiorini, Carlo, Formaggio, Joseph A, Forstner, Christian, Fränkle, Florian M, Gauda, Kevin, Gavin, Andrew S, Gil, Woosik, Glück, Ferenc, Grohmann, Steffen, Grössle, Robin, Gumbsheimer, Rainer, Gutknecht, Nathanael, Hannen, Volker, Hasselmann, Leonard, Haußmann, Norman, Helbing, Klaus, Henke, Hanna, Heyns, Svenja, Hickford, Stephanie, Hiller, Roman, Hillesheimer, David, Hinz, Dominic, Höhn, Thomas, Huber, Anton, Jansen, Alexander, Karl, Christian, Kellerer, Jonas, Khosonthongkee, Khanchai, Kleifges, Matthias, Klein, Manuel, Kohpeiß, Joshua, Köhler, Christoph, Köllenberger, Leonard, Kopmann, Andreas, Kovač, Neven, Kovalík, Alojz, Krause, Holger, La Cascio, Luisa, Lasserre, Thierry, Lauer, Joscha, Le, Thanh-Long, Lebeda, Ondřej, Lehnert, Bjoern, Li, Gen, Lokhov, Alexey, Machatschek, Moritz, Mark, Martin, Marsteller, Alexander, Martin, Eric L, Melzer, Christin, Mertens, Susanne, Mohanty, Shailaja, Mostafa, Jalal, Müller, Klaus, Nava, Andrea, Neumann, Holger, Niemes, Simon, Onillon, Anthony, Parno, Diana S, Pavan, Maura, Pinsook, Udomsilp, Poon, Alan W P, Lopez Poyato, Jose Manuel, Pozzi, Stefano, Priester, Florian, Ráliš, Jan, Ramachandran, Shivani, Robertson, R G Hamish, Rodenbeck, Caroline
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States 11.04.2025
ISSN:1095-9203, 1095-9203
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Abstract That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in fields from particle physics to cosmology. We report on the search for the effective electron antineutrino mass with the KATRIN experiment. KATRIN performs precision spectroscopy of the tritium β-decay close to the kinematic endpoint. On the basis of the first five measurement campaigns, we derived a best-fit value of [Formula: see text] eV , resulting in an upper limit of < 0.45 eV at 90% confidence level. Stemming from 36 million electrons collected in 259 measurement days, a substantial reduction of the background level, and improved systematic uncertainties, this result tightens KATRIN's previous bound by a factor of almost two.
AbstractList That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in fields from particle physics to cosmology. We report on the search for the effective electron antineutrino mass with the KATRIN experiment. KATRIN performs precision spectroscopy of the tritium β-decay close to the kinematic endpoint. On the basis of the first five measurement campaigns, we derived a best-fit value of [Formula: see text] eV2, resulting in an upper limit of mν < 0.45 eV at 90% confidence level. Stemming from 36 million electrons collected in 259 measurement days, a substantial reduction of the background level, and improved systematic uncertainties, this result tightens KATRIN's previous bound by a factor of almost two.That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in fields from particle physics to cosmology. We report on the search for the effective electron antineutrino mass with the KATRIN experiment. KATRIN performs precision spectroscopy of the tritium β-decay close to the kinematic endpoint. On the basis of the first five measurement campaigns, we derived a best-fit value of [Formula: see text] eV2, resulting in an upper limit of mν < 0.45 eV at 90% confidence level. Stemming from 36 million electrons collected in 259 measurement days, a substantial reduction of the background level, and improved systematic uncertainties, this result tightens KATRIN's previous bound by a factor of almost two.
That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in fields from particle physics to cosmology. We report on the search for the effective electron antineutrino mass with the KATRIN experiment. KATRIN performs precision spectroscopy of the tritium β-decay close to the kinematic endpoint. On the basis of the first five measurement campaigns, we derived a best-fit value of [Formula: see text] eV , resulting in an upper limit of < 0.45 eV at 90% confidence level. Stemming from 36 million electrons collected in 259 measurement days, a substantial reduction of the background level, and improved systematic uncertainties, this result tightens KATRIN's previous bound by a factor of almost two.
Author Hiller, Roman
Onillon, Anthony
Lasserre, Thierry
Biondi, Yanina
Lebeda, Ondřej
Hillesheimer, David
Debowski, Karol
Henke, Hanna
Mertens, Susanne
Poon, Alan W P
Priester, Florian
Daniel, Byron A
Barrero, Deseada Díaz
Glück, Ferenc
Helbing, Klaus
Mark, Martin
Marsteller, Alexander
Ellinger, Enrico
Bobien, Steffen
Parno, Diana S
Kellerer, Jonas
Kovalík, Alojz
Robertson, R G Hamish
Machatschek, Moritz
Ráliš, Jan
Biassoni, Matteo
Pozzi, Stefano
Hickford, Stephanie
Drexlin, Guido
Fiorini, Carlo
Niemes, Simon
Doe, Peter J
La Cascio, Luisa
Dragoun, Otokar
Gavin, Andrew S
Gutknecht, Nathanael
Lehnert, Bjoern
Melzer, Christin
Caldwell, Tom S
Aker, Max
Enomoto, Sanshiro
Bornschein, Beate
Neumann, Holger
Martin, Eric L
Fränkle, Florian M
Köhler, Christoph
Grohmann, Steffen
Höhn, Thomas
Jansen, Alexander
Klein, Manuel
Eitel, Klaus
Hinz, Dominic
Formaggio, Joseph A
Le, Thanh-Long
Mohanty, Shailaja
Chatrabhuti, Auttakit
Lauer, Joscha
Karl, Christian
Khosonthongkee, Khanchai
Böttcher, Matthias
Forstner, Christian
Grössle, Robin
Edzards, Frank
Nava, Andrea
Ramachan
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References 40209008 - Science. 2025 Apr 11;388(6743):146-147. doi: 10.1126/science.adw9435.
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