. "\u0160imkovic, Fedor" . "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 . "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." . "[14AF1027EED1]" . "RIV/68407700:21670/14:00225043" . "Chiral two-body currents and neutrinoless double-\u03B2 decay in the quasiparticle random-phase approximation"@en . "21670" . "Vogel, P." . "89" . . "http://journals.aps.org/prc/abstract/10.1103/PhysRevC.89.064308" . . . . "6" . . "000337342600002" . "neutrinoless double beta decay; nuclear matrix elements; quasiparticle random-phase approximation (QRPA); two-body currents; chiral effective field theory (chi-EFT); shell model"@en . . "Chiral two-body currents and neutrinoless double-\u03B2 decay in the quasiparticle random-phase approximation" . "Physical Review C" . . . "Chiral two-body currents and neutrinoless double-\u03B2 decay in the quasiparticle random-phase approximation" . . "0556-2813" . "5"^^ . . . . "7153" . . "RIV/68407700:21670/14:00225043!RIV15-MSM-21670___" . "Chiral two-body currents and neutrinoless double-\u03B2 decay in the quasiparticle random-phase approximation"@en . "Engel, J." . "1"^^ . "3"^^ . . "10.1103/PhysRevC.89.064308" . . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "I, P(LM2011027)" . . .