The lambda Mechanism of the 0v beta beta-Decay

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F17%3A00318752" target="_blank" >RIV/68407700:21670/17:00318752 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3389/fphy.2017.00057" target="_blank" >http://dx.doi.org/10.3389/fphy.2017.00057</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fphy.2017.00057" target="_blank" >10.3389/fphy.2017.00057</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The lambda Mechanism of the 0v beta beta-Decay

Popis výsledku v původním jazyce

The lambda mechanism (W-L - W-R exchange) of the neutrinoless double beta decay (0v beta beta-decay), which has origin in left-right symmetric model with right-handed gauge boson at TeV scale, is investigated. The revisited formalism of the 0v beta beta-decay, which includes higher order terms of nucleon current, is exploited. The corresponding nuclear matrix elements are calculated within quasiparticle random phase approximation with partial restoration of the isospin symmetry for nuclei of experimental interest. A possibility to distinguish between the conventional light neutrino mass (W-L - W-L exchange) and lambda mechanisms by observation of the 0v beta beta-decay in several nuclei is discussed. A qualitative comparison of effective lepton number violating couplings associated with these two mechanisms is performed. By making viable assumption about the seesaw type mixing of light and heavy neutrinos with the value of Dirac mass mD within the range 1 MeV < m(D) < 1 GeV, it is concluded that there is a dominance of the conventional light neutrino mass mechanism in the decay rate.

Název v anglickém jazyce

The lambda Mechanism of the 0v beta beta-Decay

Popis výsledku anglicky

The lambda mechanism (W-L - W-R exchange) of the neutrinoless double beta decay (0v beta beta-decay), which has origin in left-right symmetric model with right-handed gauge boson at TeV scale, is investigated. The revisited formalism of the 0v beta beta-decay, which includes higher order terms of nucleon current, is exploited. The corresponding nuclear matrix elements are calculated within quasiparticle random phase approximation with partial restoration of the isospin symmetry for nuclei of experimental interest. A possibility to distinguish between the conventional light neutrino mass (W-L - W-L exchange) and lambda mechanisms by observation of the 0v beta beta-decay in several nuclei is discussed. A qualitative comparison of effective lepton number violating couplings associated with these two mechanisms is performed. By making viable assumption about the seesaw type mixing of light and heavy neutrinos with the value of Dirac mass mD within the range 1 MeV < m(D) < 1 GeV, it is concluded that there is a dominance of the conventional light neutrino mass mechanism in the decay rate.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EF16_013%2F0001733" target="_blank" >EF16_013/0001733: Podzemní laboratoř LSM - česká účast ve výzkumné infrastruktuře evropského významu</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Frontiers in Physics

ISSN

2296-424X

e-ISSN

2296-424X

Svazek periodika

5

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000415296900001

EID výsledku v databázi Scopus

2-s2.0-85034815401