DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F13%3A00214727" target="_blank" >RIV/68407700:21670/13:00214727 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
DOUBLE FERMI MATRIX ELEMENT WITHIN PERTURBATION THEORY
Original language description
The amplitude for double-beta decay with two-neutrino emission is related to beta(-) and beta(+) transitions of Fermi and Gamow-Teller type connecting ground state of initial and final nuclei with virtual intermediate nuclear states. The suppression of double Fermi and Gamow-Teller matrix elements has origin in violation of the isospin SU(2) and spin-isospin SU(4) symmetries, respectively. We study double Fermi matrix elements within an exactly solvable model. By using perturbation theory up to the first order a dependence of the two-neutrino double beta decay matrix element on the like-nucleon pairing, particle-particle and particle-hole proton-neutron interactions by assuming a weak violation of isospin symmetry of Hamiltonian expressed with generators of the SO(5) group. It is found that there is a dominance of transition through a single state of the intermediate nucleus.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LM2011027" target="_blank" >LM2011027: Project LSM/ULISSE ? contribution of the Czech Republic to the extension of the large research infrastructure of European importance (underground laboratory and construction of SuperNEMO experiment, continuation of the Czech participation)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ROMANIAN JOURNAL OF PHYSICS
ISSN
1221-146X
e-ISSN
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Volume of the periodical
58
Issue of the periodical within the volume
9-10
Country of publishing house
RO - ROMANIA
Number of pages
7
Pages from-to
1251-1257
UT code for WoS article
000326846400025
EID of the result in the Scopus database
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