Improved short-range correlations and 0nbb nuclear matrix elements of 76Ge and 82Se

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dc.creatorKortelainen, Markus
dc.creatorSuhonen, Jouni
dc.date2007-05-03
dc.date.accessioned2026-07-07T10:35:45Z
dc.date.available2026-07-07T10:35:45Z
dc.descriptionWe calculate the nuclear matrix elements of the neutrinoless double beta ($0νββ$) decays of $^{76}$Ge and $^{82}$Se for the light-neutrino exchange mechanism. The nuclear wave functions are obtained by using realistic two-body forces within the proton-neutron quasiparticle random-phase approximation (pnQRPA). We include the effects that come from the finite size of a nucleon, from the higher-order terms of nucleonic weak currents, and from the nucleon-nucleon short-range correlations. Most importantly, we improve on the presently available calculations by replacing the rudimentary Jastrow short-range correlations by the more advanced unitary correlation operator method (UCOM). The UCOM corrected matrix elements turn out to be notably larger in magnitude than the Jastrow corrected ones. This has drastic consequences for the detectability of $0νββ$ decay in the present and future double beta experiments.
dc.description5 pages, 2 figures, to appear in Physical Review C (Rapid Communication) 2007
dc.identifierhttps://arxiv.org/abs/0705.0469
dc.identifierhttp://arxiv.org/abs/0705.0469
dc.identifierPhys.Rev.C75:051303,2007
dc.identifierdoi:10.1103/PhysRevC.75.051303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179832
dc.subjectNuclear Theory
dc.titleImproved short-range correlations and 0nbb nuclear matrix elements of 76Ge and 82Se
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