Results of the search for neutrinoless double- ? decay in Mo 100 with the NEMO-3 experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F15%3A00234306" target="_blank" >RIV/68407700:21670/15:00234306 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.92.072011" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.92.072011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.92.072011" target="_blank" >10.1103/PhysRevD.92.072011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Results of the search for neutrinoless double- ? decay in Mo 100 with the NEMO-3 experiment

Popis výsledku v původním jazyce

The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double-? (0???) decay. We report the final results of a search for 0??? decays with 6.914 kg of Mo100 using theentire NEMO-3 data set with a detector live time of 4.96 yr, which corresponds to an exposure of 34.3kg.yr. We perform a detailed study of the expected background in the 0??? signal region and find no evidence of 0??? decays in the data. The level of observed background in the 0??? signal region [2.8-3.2] MeV is 0.44?0.13counts/yr/kg, and no events are observed in the interval [3.2-10] MeV. We therefore derive a lower limit on the half-life of 0??? decays in Mo100 of T1/2(0???)>1.1x1024yr at the 90% confidence level, under the hypothesis of decay kinematics similar to that for light Majorana neutrino exchange. Depending on the model used for calculating nuclear matrix elements, the limit for the effective Majorana neutrino mass lies in

Název v anglickém jazyce

Results of the search for neutrinoless double- ? decay in Mo 100 with the NEMO-3 experiment

Popis výsledku anglicky

The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double-? (0???) decay. We report the final results of a search for 0??? decays with 6.914 kg of Mo100 using theentire NEMO-3 data set with a detector live time of 4.96 yr, which corresponds to an exposure of 34.3kg.yr. We perform a detailed study of the expected background in the 0??? signal region and find no evidence of 0??? decays in the data. The level of observed background in the 0??? signal region [2.8-3.2] MeV is 0.44?0.13counts/yr/kg, and no events are observed in the interval [3.2-10] MeV. We therefore derive a lower limit on the half-life of 0??? decays in Mo100 of T1/2(0???)>1.1x1024yr at the 90% confidence level, under the hypothesis of decay kinematics similar to that for light Majorana neutrino exchange. Depending on the model used for calculating nuclear matrix elements, the limit for the effective Majorana neutrino mass lies in

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/LG14003" target="_blank" >LG14003: Neurychlovačová astročásticová fyzika v podzemní laboratoři LSM (Franice)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review D

ISSN

1550-7998

e-ISSN

—

Svazek periodika

92

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

23

Strana od-do

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Kód UT WoS článku

000363237400002

EID výsledku v databázi Scopus

2-s2.0-84945370746