Final results on Se-82 double beta decay to the ground state of Kr-82 from the NEMO-3 experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10391081" target="_blank" >RIV/00216208:11320/18:10391081 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21670/18:00325903

Result on the web

<a href="https://doi.org/10.1140/epjc/s10052-018-6295-x" target="_blank" >https://doi.org/10.1140/epjc/s10052-018-6295-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-018-6295-x" target="_blank" >10.1140/epjc/s10052-018-6295-x</a>

Result language

angličtina

Original language name

Final results on Se-82 double beta decay to the ground state of Kr-82 from the NEMO-3 experiment

Original language description

Using data from the NEMO-3 experiment, we have measured the two-neutrino double beta decay (2 nu beta beta) half-life of Se-82 as T-1/2(2 nu) = [9.39 +/- 0.17 (stat) +/- 0.58 (syst)] x 10(19) y under the single-state dominance hypothesis for this nuclear transition. The corresponding nuclear matrix element is vertical bar M-2 nu vertical bar = 0.0498 +/- 0.0016. In addition, a search for neutrinoless double beta decay (0 nu beta beta) using 0.93 kg of Se-82 observed for a total of 5.25 y has been conducted and no evidence for a signal has been found. The resulting half-life limit of T-1/2(0 nu) &gt; 2.5 x 10(23) y (90% C.L.) for the light neutrino exchange mechanism leads to a constraint on the effective Majorana neutrino mass of &lt; m(nu)&gt; &lt; (1.2-3.0) eV, where the range reflects 0 nu beta beta nuclear matrix element values from different calculations. Furthermore, constraints on lepton number violating parameters for other 0 nu beta beta mechanisms, such as right-handed currents, majoron emission and R-parity violating supersymmetry modes have been set.

Czech name

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Czech description

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Type

J_imp - 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

Project

<a href="/en/project/EF16_013%2F0001733" target="_blank" >EF16_013/0001733: Underground laboratory LSM - Czech participation to European-level research</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

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Volume of the periodical

78

Issue of the periodical within the volume

10

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

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UT code for WoS article

000448424500001

EID of the result in the Scopus database

2-s2.0-85054855469