Consistency examinations of calculations of nuclear matrix elements of double-beta decay by QRPA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F18%3A00337679" target="_blank" >RIV/68407700:21670/18:00337679 - isvavai.cz</a>

Výsledek na webu

<a href="http://ntl.inrne.bas.bg/workshop/2018/contributions/b01_Terasaki_2018.pdf" target="_blank" >http://ntl.inrne.bas.bg/workshop/2018/contributions/b01_Terasaki_2018.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Consistency examinations of calculations of nuclear matrix elements of double-beta decay by QRPA

Popis výsledku v původním jazyce

The neutrinoless double-beta decay is a hypothetical rare nuclear decay, which can be used for determining the neutrino-mass scale. The scheme to use this decay for determining the neutrino-mass scale is one of few limited methods possible to determine that. Nuclear matrix element of this decay is an important input to this method, and this matrix element cannot be determined by experiment. I examine the validity of the transition density used for calculating the nuclear matrix element by comparing the experimental data and my calculated result of the charge-change strength functions of 48Ca and 48Ti. The nuclear wave functions are obtained by the quasiparticle random-phase approximation. A new idea is proposed on the transition operator for this strength function, and the data of those nuclei are reproduced well consistently. Reduced half-life of a few nuclei to the neutrinoless double-beta decay are shown.

Název v anglickém jazyce

Consistency examinations of calculations of nuclear matrix elements of double-beta decay by QRPA

Popis výsledku anglicky

The neutrinoless double-beta decay is a hypothetical rare nuclear decay, which can be used for determining the neutrino-mass scale. The scheme to use this decay for determining the neutrino-mass scale is one of few limited methods possible to determine that. Nuclear matrix element of this decay is an important input to this method, and this matrix element cannot be determined by experiment. I examine the validity of the transition density used for calculating the nuclear matrix element by comparing the experimental data and my calculated result of the charge-change strength functions of 48Ca and 48Ti. The nuclear wave functions are obtained by the quasiparticle random-phase approximation. A new idea is proposed on the transition operator for this strength function, and the data of those nuclei are reproduced well consistently. Reduced half-life of a few nuclei to the neutrinoless double-beta decay are shown.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/EF16_019%2F0000766" target="_blank" >EF16_019/0000766: Inženýrské aplikace fyziky mikrosvěta</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 37th International Workshop on Nuclear Theory (IWNT-37)

ISBN

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ISSN

1313-2822

e-ISSN

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Počet stran výsledku

10

Strana od-do

3-12

Název nakladatele

Heron Press Ltd

Místo vydání

Sofia

Místo konání akce

Rila (pohoří)

Datum konání akce

24. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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