PaperPanorama
FAQ

Nuclear Theory·nucl-th

Wednesday·July 21, 2021

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    [Submitted on 19 Jul 2021] (cross-list from hep-ph)

    Testing the Inverted Neutrino Mass Ordering with Neutrinoless Double-Beta Decay

    Matteo Agostini🇬🇧 · Giovanni Benato🇮🇹 · Jason A. Detwiler🇺🇸 · Javier Menéndez🇪🇸 · Francesco Vissani🇮🇹

    We quantify the extent to which future experiments will test the existence of neutrinoless double-beta decay mediated by light neutrinos with inverted-ordered masses. While it remains difficult to compare measurements performed with different isotopes, we find that future searches will fully test the inverted ordering scenario, as a global, multi-isotope endeavor. They will also test other possible mechanisms driving the decay, including a large uncharted region of the allowed parameter space assuming that neutrino masses follow the normal ordering.

    Comments:
    6 pages, 2 figures, version accepted by Phys. Rev. C
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2107.09104 [pdf]
    PRC(2021)·32 citations
  2. 04

    [Submitted on 20 Jul 2021] (cross-list from astro-ph.HE)

    Imposing multi-physics constraints at different densities on the Neutron Star Equation of State

    Suprovo Ghosh🇮🇳 · Debarati Chatterjee🇮🇳 · Jürgen Schaffner-Bielich🇩🇪

    Neutron star matter spans a wide range of densities, from that of nuclei at the surface to exceeding several times normal nuclear matter density in the core. While terrestrial experiments, such as nuclear or heavy-ion collision experiments, provide clues about the behaviour of dense nuclear matter, one must resort to theoretical models of neutron star matter to extrapolate to higher density and finite neutron/proton asymmetry relevant for neutron stars. In this work, we explore the parameter space within the framework of the Relativistic Mean Field model allowed by present uncertainties compatible with state-of-the-art experimental data. We apply a cut-off filter scheme to constrain the parameter space using multi-physics constraints at different density regimes: chiral effective field theory, nuclear and heavy-ion collision data as well as multi-messenger astrophysical observations of neutron stars. Using the results of the study, we investigate possible correlations between nuclear and astrophysical observables.

    Comments:
    19 pages, 15 figures
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
    arXiv:
    2107.09371 [pdf]
    EPJA(2022)·52 citations

Affiliations

first authorsco-authorsvia INSPIRE