About: Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation

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About: Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://journals.aps.org/prc/abstract/10.1103/PhysRevC.89.064308
Description	We test the effects of an approximate treatment of two-body contributions to the axial-vector current on the quasiparticle random-phase approximation (QRPA) matrix elements for neutrinoless double-beta decay in a range of isotopes. The form and strength of the two-body terms come from chiral effective-field theory. The two-body currents typically reduce the matrix elements by about 20%, not as much as in shell-model calculations. One reason for the difference is that standard practice in the QRPA is to adjust the strength of the isoscalar pairing interaction to reproduce two-neutrino double-beta decay lifetimes. Another may be the larger QRPA single-particle space. Whatever the reasons, the effects on neutrinoless decay are significantly less than those on two-neutrino decay, both in the shell model and the QRPA. We test the effects of an approximate treatment of two-body contributions to the axial-vector current on the quasiparticle random-phase approximation (QRPA) matrix elements for neutrinoless double-beta decay in a range of isotopes. The form and strength of the two-body terms come from chiral effective-field theory. The two-body currents typically reduce the matrix elements by about 20%, not as much as in shell-model calculations. One reason for the difference is that standard practice in the QRPA is to adjust the strength of the isoscalar pairing interaction to reproduce two-neutrino double-beta decay lifetimes. Another may be the larger QRPA single-particle space. Whatever the reasons, the effects on neutrinoless decay are significantly less than those on two-neutrino decay, both in the shell model and the QRPA. (en)
Title	Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation (en)
skos:prefLabel	Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation (en)
skos:notation	RIV/68407700:21670/14:00225043!RIV15-MSM-21670___
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(LM2011027)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Šimkovic, Fedor
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Ústav technické a experimentální fyziky ČVUT
http://linked.open...dnocenehoVysledku	7153
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/14:00225043
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	neutrinoless double beta decay; nuclear matrix elements; quasiparticle random-phase approximation (QRPA); two-body currents; chiral effective field theory (chi-EFT); shell model (en)
http://linked.open.../riv/klicoveSlovo	shell model chiral effective field theory (chi-EFT) quasiparticle random-phase approximation (QRPA) two-body currents nuclear matrix elements neutrinoless double beta decay
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[14AF1027EED1]
http://linked.open...i/riv/nazevZdroje	Physical Review C
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	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)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	89
http://linked.open...iv/tvurceVysledku	Vogel, P. Šimkovic, Fedor Engel, J.
http://linked.open...ain/vavai/riv/wos	000337342600002
issn	0556-2813
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevC.89.064308
http://localhost/t...ganizacniJednotka	21670

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