Study of double beta decay of Mo100 and Se82 using the NEMO3 detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F04%3A10107945" target="_blank" >RIV/68407700:21670/04:10107945 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Study of double beta decay of Mo100 and Se82 using the NEMO3 detector
Original language description
After analysis of 5797 h of data from the detector NEMO3, new limits on neutrinoless double beta decay of Mo100 (T_1/2 > 3.1 × 10^23 y, 90% CL) and Se82 (T_1/2 > 1.4 × 10^23 y, 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are |m_nu| < (0.8-1.2) eV and |m_nu| < (1.5-3.1) eV, respectively. Also the limits on double-beta decay with Majoron emission are: T_1/2 >1.4 × 10^22 y (90% CL) for Mo100 and T_1/2 > 1.2 × 10^22 y (90% CL) for Se82. Corresponding bounds on the Majoron-neutrino coupling constant are |g_ee| < (0.5-0.9) × 10^-4 and < (0.7-1.6) × 10^-4. Two-neutrino double-beta decay half-lives have been measured with a high accuracy, T_1/2 (Mo100) = [7.68 +/- 0.02(stat) +/- 0.54(syst)] × 10^18 y and T_1/2 (Se82) = [10.3 +/- 0.3(stat) +/- 0.7(syst)] × 10^19 y.
Czech name
Studium dvojitého rozpadu beta Mo100 a Se82 s detektorem NEMO3
Czech description
Po zpracování 5797 hodin dat z detektoru NEMO3 byly obdrženy nové limity pro bezneutrinový dvojitý rozpad beta Mo100 (T_1/2 > 3.1 × 10^23 let, 90% CL) a Se82 (T_1/2 > 1.4 × 10^23 let, 90% CL). Odpovídající limity hmotnosti majoranovského neutrina jsou |m_nu| < (0.8-1.2) eV, respektive |m_nu| < (1.5-3.1) eV. Také byly určeny limity pro dvojitý beta rozpad s emisí Majoronu: T_1/2 >1.4 × 10^22 let (90% CL) pro Mo100 a T_1/2 > 1.2 × 10^22 let (90% CL) pro Se82. Odpovídající vazbové konstanty mezi Majoronema neutrinem jsou |g_ee| < (0.5-0.9) × 10^-4 a < (0.7-1.6) × 10^-4. Poločasy dvouneutrinového dvojitého rozpadu beta byly změřeny s vysokou přesností: T_1/2 (Mo100) = [7.68 +/- 0.02(stat) +/- 0.54(syst)] × 10^18 let a T_1/2 (Se82) = [10.3 +/- 0.3(stat) +/- 0.7(syst)] × 10^19 let.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA202%2F02%2F0157" target="_blank" >GA202/02/0157: Measurement of the double beta decay of 106Cd</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Experimental and Theoretical Physics Letters
ISSN
0021-3640
e-ISSN
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Volume of the periodical
80
Issue of the periodical within the volume
6
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
5
Pages from-to
429-433
UT code for WoS article
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EID of the result in the Scopus database
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