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Related papers: Neutrino Masses and Mass Hierarchy: Evidence for t…

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The configuration of the three neutrino masses can take two forms, known as the normal and inverted hierarchies. We compute the Bayesian evidence associated with these two hierarchies. Previous studies found a mild preference for the normal…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-15 Fergus Simpson , Raul Jimenez , Carlos Pena-Garay , Licia Verde

The hypothesis that the Majorana mass of ordinary neutrinos dominates the rate of neutrinoless double beta decay is investigated. Predictions from neutrino oscillations are updated. Nuclear uncertainties are discussed, evaluating the impact…

High Energy Physics - Phenomenology · Physics 2014-08-11 Stefano Dell'Oro , Simone Marcocci , Francesco Vissani

The extraction of the neutrino mass ordering is one of the major challenges in particle physics and cosmology, not only for its implications for a fundamental theory of mass generation in nature, but also for its decisive role in the scale…

In the preprint arxiv:1703.03425 "strong evidence" for the normal neutrino mass ordering is claimed. The authors obtain Bayesian odds of 42:1 in favour of the normal ordering. Their conclusion is based on adopting a flat logarithmic prior…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-16 T. Schwetz , K. Freese , M. Gerbino , E. Giusarma , S. Hannestad , M. Lattanzi , O. Mena , S. Vagnozzi

We perform a global Bayesian analysis of currently available neutrino data, putting data from oscillation experiments, neutrinoless double beta decay ($0\nu\beta\beta$), and precision cosmology on an equal footing. We evaluate the discovery…

High Energy Physics - Phenomenology · Physics 2021-08-05 Allen Caldwell , Manuel Ettengruber , Alexander Merle , Oliver Schulz , Maximilian Totzauer

Cosmological probes are steadily reducing the total neutrino mass window, resulting in constraints on the neutrino-mass degeneracy as the most significant outcome. In this work we explore the discovery potential of cosmological probes to…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-13 Raul Jimenez , Thomas Kitching , Carlos Pena-Garay , Licia Verde

One of the not-yet determined properties of neutrinos is the ordering of their mass eigenstates. We combine the available data from neutrino oscillations, neutrinoless double beta decay and Cosmic Microwave Background observations to derive…

High Energy Physics - Phenomenology · Physics 2018-07-02 S. Gariazzo

We perform a joint analysis of current data from cosmology and laboratory experiments to constrain the neutrino mass parameters in the framework of bayesian statistics, also accounting for uncertainties in nuclear modeling, relevant for…

High Energy Physics - Phenomenology · Physics 2016-02-10 Martina Gerbino , Massimiliano Lattanzi , Alessandro Melchiorri

There is a broad theoretical consensus on the idea that ordinary neutrinos have a Majorana mass, but we have no clear prediction about its value, and direct experimental measurements of this quantity are rather challenging. In this work, we…

High Energy Physics - Phenomenology · Physics 2019-10-16 Stefano Dell'Oro , Simone Marcocci , Francesco Vissani

Neutrinoless double beta decay pops up almost in any extension of the standard model. It is perhaps the only process, which can unambiguously determine whether the massive neutrinos are Majorana or Dirac type particles. In addition from the…

High Energy Physics - Phenomenology · Physics 2009-11-10 J. D. Vergados

In this paper, we have constrained the neutrino mass and mass hierarchy in the $\Lambda$CDM cosmology with the neutrino mass hierarchy parameter $\Delta$, which represents different mass orderings, by using the {\it Planck} 2015 + BAO + SN…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-23 Wenxue Zhang , En-Kun li , Minghui Du , Yuhao Mu , Shouli Ning , Baorong Chang , Lixin Xu

Motivated by recent intensive experimental efforts on searching for neutrinoless double-beta decays, we perform a detailed analysis of the physics potential of the experiments based on $^{76}\mathrm{Ge}$. Assuming no signals, current and…

High Energy Physics - Phenomenology · Physics 2016-01-20 Jue Zhang , Shun Zhou

Neutrinoless double beta decay experiments constrain one combination of neutrino parameters, while cosmic surveys constrain another. This complementarity opens up an exciting range of possibilities. If neutrinos are Majorana particles, and…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-21 Scott Dodelson , Joseph Lykken

Recent works combining neutrino oscillation and cosmological data to determine the neutrino hierarchy found a range of odds in favour of the normal hierarchy. These results arise from differing approaches to incorporating prior knowledge…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-15 Constance Mahony , Boris Leistedt , Hiranya V. Peiris , Jonathan Braden , Benjamin Joachimi , Andreas Korn , Linda Cremonesi , Ryan Nichol

Given the precision of current neutrino data, priors still impact noticeably the constraints on neutrino masses and their hierarchy. To avoid our understanding of neutrinos being driven by prior assumptions, we construct a prior that is…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-02 Alan F. Heavens , Elena Sellentin

Oscillation experiments show that neutrinos have masses. They however only determine the neutrinop mass differences. Information on the absolute masses can be obtained by studying the kinematics in weak decays, or by searching for…

High Energy Physics - Experiment · Physics 2007-05-23 Jean-Luc Vuilleumier

It is shown that, in the framework of the scheme with three-neutrino mixing and a mass hierarchy, the results of neutrino oscillation experiments imply an upper bound of about 10^{-2} eV for the effective Majorana mass in neutrinoless…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. M. Bilenky , C. Giunti

Recent neutrino experiment results show a preference for the normal neutrino mass ordering. The global efforts to search for neutrinoless double beta decays undergo a broad gap with the approach to the prediction in the three-neutrino…

High Energy Physics - Phenomenology · Physics 2019-01-30 C. H. Jang , B. J. Kim , Y. J. Ko , K. Siyeon

Neutrino mass sum-rule is a very important research subject from theoretical side because neutrino oscillation experiment only gave us two squared-mass differences and three mixing angles. We review neutrino mass sum-rule in literature that…

General Physics · Physics 2017-07-11 Asan Damanik

We present a novel approach to derive constraints on neutrino masses from cosmological data, while taking into account our ignorance of the neutrino mass ordering. We derive constraints from a combination of current and future cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2018-02-02 Martina Gerbino , Massimiliano Lattanzi , Olga Mena , Katherine Freese
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