New measurement of double- β decays of Mo 100 to excited states of Ru 100 with the CUPID-Mo experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90263%2F23%3A00371303" target="_blank" >RIV/68407700:90263/23:00371303 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevC.107.025503" target="_blank" >https://doi.org/10.1103/PhysRevC.107.025503</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.107.025503" target="_blank" >10.1103/PhysRevC.107.025503</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New measurement of double- β decays of Mo 100 to excited states of Ru 100 with the CUPID-Mo experiment

Popis výsledku v původním jazyce

The CUPID-Mo experiment, located at the Laboratoire Souterrain de Modane (France), was a demonstrator experiment for CUPID. It consisted of an array of 20 Li-2 Mo-100 O-4 (LMO) calorimeters, each equipped with a Ge light detector for particle identification. In this work, we present the result of a search for two-neutrino and neutrinoless double-beta decays of Mo-100 to the first 0(+) and 2(+) excited states of Ru-100 using the full CUPID-Mo exposure (2.71 kg yr of LMO). We measure the half-life of 2 nu beta beta decay to the 0(1)(+) state as T-1/2(2 nu -> 01+) = (7.5 +/- 1 0.8 (stat.)(-0.3)(+0.4) (syst.)) x 10(20) yr. The bolometric technique enables measurement of the electron energies as well as the gamma rays from nuclear deexcitation and this allows us to set new limits on the two-neutrino decay to the 2(1)(+) state of T-1/2(2 nu -> 21+) > 4.4 x 10(21) yr (90% c.i.) and on the neutrinoless modes of T-1/2(0 nu -> 21+) > 2.1 x 10(23) yr (90% c.i.), T-1/2(0 nu -> 01+) > 1.2 x 10(23) yr (90% c.i.). Information on the electrons' spectral shape is obtained, which allows us to 1 make the first comparison of the single and higher state dominance 2 nu beta beta decay models for the 0(1)(+) excited state of Ru-100.

Název v anglickém jazyce

New measurement of double- β decays of Mo 100 to excited states of Ru 100 with the CUPID-Mo experiment

Popis výsledku anglicky

The CUPID-Mo experiment, located at the Laboratoire Souterrain de Modane (France), was a demonstrator experiment for CUPID. It consisted of an array of 20 Li-2 Mo-100 O-4 (LMO) calorimeters, each equipped with a Ge light detector for particle identification. In this work, we present the result of a search for two-neutrino and neutrinoless double-beta decays of Mo-100 to the first 0(+) and 2(+) excited states of Ru-100 using the full CUPID-Mo exposure (2.71 kg yr of LMO). We measure the half-life of 2 nu beta beta decay to the 0(1)(+) state as T-1/2(2 nu -> 01+) = (7.5 +/- 1 0.8 (stat.)(-0.3)(+0.4) (syst.)) x 10(20) yr. The bolometric technique enables measurement of the electron energies as well as the gamma rays from nuclear deexcitation and this allows us to set new limits on the two-neutrino decay to the 2(1)(+) state of T-1/2(2 nu -> 21+) > 4.4 x 10(21) yr (90% c.i.) and on the neutrinoless modes of T-1/2(0 nu -> 21+) > 2.1 x 10(23) yr (90% c.i.), T-1/2(0 nu -> 01+) > 1.2 x 10(23) yr (90% c.i.). Information on the electrons' spectral shape is obtained, which allows us to 1 make the first comparison of the single and higher state dominance 2 nu beta beta decay models for the 0(1)(+) excited state of Ru-100.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

—

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Svazek periodika

107

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

20

Strana od-do

"025503-1"-"025503-20"

Kód UT WoS článku

000951103500002

EID výsledku v databázi Scopus

2-s2.0-85149640698