Neutrinoless doubleβ-decay and neutrino mass hierarchies

2005/07/29 by S. M. Bilenky, Amand Faessler, A. Faessler +4
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Atomic physics #Double beta decay #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Quasiparticle #Random phase approximation #Seesaw mechanism #Seesaw molecular geometry #hep-ph

paper · pdf · doi:10.1103/physrevd.72.053015

published as Phys.Rev. D72 (2005) 053015 · 13 pages, 3 figures

arxiv created 2005/07/29 · openalex publication_date 2005/09/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In the framework of the seesaw mechanism the normal hierarchy is favorable for the neutrino mass spectrum. For this spectrum we present a detailed calculation of the half-lives of neutrinoless double \ensuremathβ-decay for several nuclei of experimental interest. The half-lives are evaluated by considering the most comprehensive nuclear matrix elements, which were obtained within the renormalized quasiparticle random phase approximation by the Bratislava--Caltech--Tuebingen group. The dependence of the half-lives on sin²\ensuremathθ₁₃ and the lightest neutrino mass is studied. We present also the results of the calculations of the half-lives of neutrinoless double \ensuremathβ-decay in the case of the inverted hierarchy of neutrino masses.

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