Constraining mass spectra with sterile neutrinos from neutrinoless double beta decay, tritium beta decay, and cosmology

2005/12/31 by Srubabati Goswami, Sreetama Goswami, Werner Rodejohann
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #BETA (programming language) #Beta decay #Cosmology #Double beta decay #Mass spectrometry #Mass spectrum #Measurements of neutrino speed #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Solar neutrino #Solar neutrino problem #Sterile neutrino #astro-ph #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.73.113003

published as Phys.Rev. D73 (2006) 113003 · 40 pages, 9 figures. Minor changes, matches version in PRD

arxiv created 2006/05/18 · openalex publication_date 2006/06/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We analyze the constraints on neutrino mass spectra with extra sterile neutrinos as implied by the LSND experiment. The various mass related observables in neutrinoless double beta decay, tritium beta decay and cosmology are discussed. Both neutrino oscillation results as well as recent cosmological neutrino mass bounds are taken into account. We find that some of the allowed mass patterns are severely restricted by the current constraints, in particular, by the cosmological constraints on the total sum of neutrino masses and by the nonmaximality of the solar neutrino mixing angle. Furthermore, we estimate the form of the four neutrino mass matrices and also comment on the situation in scenarios with two additional sterile neutrinos.

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