Direct neutrino-mass measurement based on 259 days of KATRIN data
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00636116" target="_blank" >RIV/61389005:_____/25:00636116 - isvavai.cz</a>
Result on the web
<a href="https://www.science.org/doi/10.1126/science.adq9592" target="_blank" >https://www.science.org/doi/10.1126/science.adq9592</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/science.adq9592" target="_blank" >10.1126/science.adq9592</a>
Alternative languages
Result language
angličtina
Original language name
Direct neutrino-mass measurement based on 259 days of KATRIN data
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LTT19005" target="_blank" >LTT19005: Czech Participation at the International Experiment KATRIN</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science
ISSN
0036-8075
e-ISSN
1095-9203
Volume of the periodical
387
Issue of the periodical within the volume
6741
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
180-185
UT code for WoS article
001494298000032
EID of the result in the Scopus database
2-s2.0-105009110194